Cargando…
First determination of the ${\rho }$ parameter at ${\sqrt{s} = 13}$ TeV: probing the existence of a colourless C-odd three-gluon compound state
The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions an...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Lenguaje: | eng |
| Publicado: |
2017
|
| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1140/epjc/s10052-019-7223-4 http://cds.cern.ch/record/2298154 |
| _version_ | 1780956967475347456 |
|---|---|
| author | Antchev, G. Aspell, P. Atanassov, I. Avati, V. Baechler, J. Barrera, C.Baldenegro Berardi, V. Berretti, M. Bossini, E. Bottigli, U. Bozzo, M. Bruce, R. Burkhardt, H. Cafagna, F.S. Catanesi, M.G. Csanád, M. Csörgő, T. Deile, M. De Leonardis, F. D'Orazio, A. Doubek, M. Druzhkin, D. Eggert, K. Eremin, V. Ferro, F. Fiergolski, A. Garcia, F. Garcia Morales, H. Georgiev, V. Giani, S. Grzanka, L. Hammerbauer, J. Heino, J. Helander, P. Isidori, T. Ivanchenko, V. Janda, M. Karev, A. Kašpar, J. Kopal, J. Kundrát, V. Lami, S. Latino, G. Lauhakangas, R. Linhart, R. Lindsey, C. Lokajíček, M.V. Losurdo, L. Lo Vetere, M. Rodríguez, F.Lucas Macrí, M. Malawski, M. Mereghetti, A. Minafra, N. Minutoli, S. Mirarchi, D. Naaranoja, T. Nemes, F. Niewiadomski, H. Novák, T. Oliveri, E. Oljemark, F. Oriunno, M. Österberg, K. Palazzi, P. Passaro, V. Peroutka, Z. Procházka, J. Quinto, M. Radermacher, E. Radicioni, E. Ravotti, F. Redaelli, S. Robutti, E. Royon, C. Ruggiero, G. Saarikko, H. Salvachua, B. Scribano, A. Siroky, J. Smajek, J. Snoeys, W. Stefanovitch, R. Sziklai, J. Taylor, C. Tcherniaev, E. Turini, N. Vacek, V. Valentino, G. Welti, J. Wenninger, J. Williams, J. Wyszkowski, P. Zich, J. Zielinski, K. |
| author_facet | Antchev, G. Aspell, P. Atanassov, I. Avati, V. Baechler, J. Barrera, C.Baldenegro Berardi, V. Berretti, M. Bossini, E. Bottigli, U. Bozzo, M. Bruce, R. Burkhardt, H. Cafagna, F.S. Catanesi, M.G. Csanád, M. Csörgő, T. Deile, M. De Leonardis, F. D'Orazio, A. Doubek, M. Druzhkin, D. Eggert, K. Eremin, V. Ferro, F. Fiergolski, A. Garcia, F. Garcia Morales, H. Georgiev, V. Giani, S. Grzanka, L. Hammerbauer, J. Heino, J. Helander, P. Isidori, T. Ivanchenko, V. Janda, M. Karev, A. Kašpar, J. Kopal, J. Kundrát, V. Lami, S. Latino, G. Lauhakangas, R. Linhart, R. Lindsey, C. Lokajíček, M.V. Losurdo, L. Lo Vetere, M. Rodríguez, F.Lucas Macrí, M. Malawski, M. Mereghetti, A. Minafra, N. Minutoli, S. Mirarchi, D. Naaranoja, T. Nemes, F. Niewiadomski, H. Novák, T. Oliveri, E. Oljemark, F. Oriunno, M. Österberg, K. Palazzi, P. Passaro, V. Peroutka, Z. Procházka, J. Quinto, M. Radermacher, E. Radicioni, E. Ravotti, F. Redaelli, S. Robutti, E. Royon, C. Ruggiero, G. Saarikko, H. Salvachua, B. Scribano, A. Siroky, J. Smajek, J. Snoeys, W. Stefanovitch, R. Sziklai, J. Taylor, C. Tcherniaev, E. Turini, N. Vacek, V. Valentino, G. Welti, J. Wenninger, J. Williams, J. Wyszkowski, P. Zich, J. Zielinski, K. |
| author_sort | Antchev, G. |
| collection | CERN |
| description | The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies. |
| id | cern-2298154 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2017 |
| record_format | invenio |
| spelling | cern-22981542022-04-02T02:40:34Zdoi:10.1140/epjc/s10052-019-7223-4http://cds.cern.ch/record/2298154engAntchev, G.Aspell, P.Atanassov, I.Avati, V.Baechler, J.Barrera, C.BaldenegroBerardi, V.Berretti, M.Bossini, E.Bottigli, U.Bozzo, M.Bruce, R.Burkhardt, H.Cafagna, F.S.Catanesi, M.G.Csanád, M.Csörgő, T.Deile, M.De Leonardis, F.D'Orazio, A.Doubek, M.Druzhkin, D.Eggert, K.Eremin, V.Ferro, F.Fiergolski, A.Garcia, F.Garcia Morales, H.Georgiev, V.Giani, S.Grzanka, L.Hammerbauer, J.Heino, J.Helander, P.Isidori, T.Ivanchenko, V.Janda, M.Karev, A.Kašpar, J.Kopal, J.Kundrát, V.Lami, S.Latino, G.Lauhakangas, R.Linhart, R.Lindsey, C.Lokajíček, M.V.Losurdo, L.Lo Vetere, M.Rodríguez, F.LucasMacrí, M.Malawski, M.Mereghetti, A.Minafra, N.Minutoli, S.Mirarchi, D.Naaranoja, T.Nemes, F.Niewiadomski, H.Novák, T.Oliveri, E.Oljemark, F.Oriunno, M.Österberg, K.Palazzi, P.Passaro, V.Peroutka, Z.Procházka, J.Quinto, M.Radermacher, E.Radicioni, E.Ravotti, F.Redaelli, S.Robutti, E.Royon, C.Ruggiero, G.Saarikko, H.Salvachua, B.Scribano, A.Siroky, J.Smajek, J.Snoeys, W.Stefanovitch, R.Sziklai, J.Taylor, C.Tcherniaev, E.Turini, N.Vacek, V.Valentino, G.Welti, J.Wenninger, J.Williams, J.Wyszkowski, P.Zich, J.Zielinski, K.First determination of the ${\rho }$ parameter at ${\sqrt{s} = 13}$ TeV: probing the existence of a colourless C-odd three-gluon compound stateParticle Physics - ExperimentParticle Physics - PhenomenologyNuclear Physics - ExperimentThe TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is notThe TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at √s = 13 TeV of the ρ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at t = 0, obtaining the following results: ρ = 0.09 ± 0.01 and ρ = 0.10 ± 0.01, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the ρ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10TeV (from 2.76 to 13TeV), has implied the exclusion of all the models classified and published by COMPETE. The ρ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the modern QCD framework, of a colourless 3-gluon bound state exchange in the t-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state t-channel exchange is not of importance for the description of elastic scattering, the ρ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies.The TOTEM experiment at the LHC has performed the first measurement at $\sqrt{s} = 13\,\mathrm{TeV}$ of the $\rho $ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at $t=0$ , obtaining the following results: $\rho = 0.09 \pm 0.01$ and $\rho = 0.10 \pm 0.01$ , depending on different physics assumptions and mathematical modelling. The unprecedented precision of the $\rho $ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than $10\,\mathrm{TeV}$ (from 2.76 to $13\,\mathrm{TeV}$ ), has implied the exclusion of all the models classified and published by COMPETE. The $\rho $ results obtained by TOTEM are compatible with the predictions, from other theoretical models both in the Regge-like framework and in the QCD framework, of a crossing-odd colourless 3-gluon compound state exchange in the t-channel of the proton–proton elastic scattering. On the contrary, if shown that the crossing-odd 3-gluon compound state t-channel exchange is not of importance for the description of elastic scattering, the $\rho $ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies. The very low-|t| reach allowed also to determine the absolute normalisation using the Coulomb amplitude for the first time at the LHC and obtain a new total proton–proton cross-section measurement $\sigma _{\mathrm{tot}} = (110.3 \pm 3.5)\,\mathrm{mb}$ , completely independent from the previous TOTEM determination. Combining the two TOTEM results yields $\sigma _{\mathrm{tot}} = (110.5 \pm 2.4)\,\mathrm{mb}$ .The TOTEM experiment at the LHC has performed the first measurement at $\sqrt{s} = 13$ TeV of the $\rho$ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at $t=0$, obtaining the following results: $\rho = 0.09 \pm 0.01$ and $\rho = 0.10 \pm 0.01$, depending on different physics assumptions and mathematical modelling. The unprecedented precision of the $\rho$ measurement, combined with the TOTEM total cross-section measurements in an energy range larger than 10 TeV (from 2.76 to 13 TeV), has implied the exclusion of all the models classified and published by COMPETE. The $\rho$ results obtained by TOTEM are compatible with the predictions, from alternative theoretical models both in the Regge-like framework and in the QCD framework, of a colourless 3-gluon bound state exchange in the $t$-channel of the proton-proton elastic scattering. On the contrary, if shown that the 3-gluon bound state $t$-channel exchange is not of importance for the description of elastic scattering, the $\rho$ value determined by TOTEM would represent a first evidence of a slowing down of the total cross-section growth at higher energies. The very low-$|t|$ reach allowed also to determine the absolute normalisation using the Coulomb amplitude for the first time at the LHC and obtain a new total proton-proton cross-section measurement $\sigma_{tot} = 110.3 \pm 3.5$ mb, completely independent from the previous TOTEM determination. Combining the two TOTEM results yields $\sigma_{tot} = 110.5 \pm 2.4$ mb.arXiv:1812.04732CERN-EP-2017-335CERN-EP-2017-335-v3oai:cds.cern.ch:22981542017-12-16 |
| spellingShingle | Particle Physics - Experiment Particle Physics - Phenomenology Nuclear Physics - Experiment Antchev, G. Aspell, P. Atanassov, I. Avati, V. Baechler, J. Barrera, C.Baldenegro Berardi, V. Berretti, M. Bossini, E. Bottigli, U. Bozzo, M. Bruce, R. Burkhardt, H. Cafagna, F.S. Catanesi, M.G. Csanád, M. Csörgő, T. Deile, M. De Leonardis, F. D'Orazio, A. Doubek, M. Druzhkin, D. Eggert, K. Eremin, V. Ferro, F. Fiergolski, A. Garcia, F. Garcia Morales, H. Georgiev, V. Giani, S. Grzanka, L. Hammerbauer, J. Heino, J. Helander, P. Isidori, T. Ivanchenko, V. Janda, M. Karev, A. Kašpar, J. Kopal, J. Kundrát, V. Lami, S. Latino, G. Lauhakangas, R. Linhart, R. Lindsey, C. Lokajíček, M.V. Losurdo, L. Lo Vetere, M. Rodríguez, F.Lucas Macrí, M. Malawski, M. Mereghetti, A. Minafra, N. Minutoli, S. Mirarchi, D. Naaranoja, T. Nemes, F. Niewiadomski, H. Novák, T. Oliveri, E. Oljemark, F. Oriunno, M. Österberg, K. Palazzi, P. Passaro, V. Peroutka, Z. Procházka, J. Quinto, M. Radermacher, E. Radicioni, E. Ravotti, F. Redaelli, S. Robutti, E. Royon, C. Ruggiero, G. Saarikko, H. Salvachua, B. Scribano, A. Siroky, J. Smajek, J. Snoeys, W. Stefanovitch, R. Sziklai, J. Taylor, C. Tcherniaev, E. Turini, N. Vacek, V. Valentino, G. Welti, J. Wenninger, J. Williams, J. Wyszkowski, P. Zich, J. Zielinski, K. First determination of the ${\rho }$ parameter at ${\sqrt{s} = 13}$ TeV: probing the existence of a colourless C-odd three-gluon compound state |
| title | First determination of the ${\rho }$ parameter at ${\sqrt{s} = 13}$ TeV: probing the existence of a colourless C-odd three-gluon compound state |
| title_full | First determination of the ${\rho }$ parameter at ${\sqrt{s} = 13}$ TeV: probing the existence of a colourless C-odd three-gluon compound state |
| title_fullStr | First determination of the ${\rho }$ parameter at ${\sqrt{s} = 13}$ TeV: probing the existence of a colourless C-odd three-gluon compound state |
| title_full_unstemmed | First determination of the ${\rho }$ parameter at ${\sqrt{s} = 13}$ TeV: probing the existence of a colourless C-odd three-gluon compound state |
| title_short | First determination of the ${\rho }$ parameter at ${\sqrt{s} = 13}$ TeV: probing the existence of a colourless C-odd three-gluon compound state |
| title_sort | first determination of the ${\rho }$ parameter at ${\sqrt{s} = 13}$ tev: probing the existence of a colourless c-odd three-gluon compound state |
| topic | Particle Physics - Experiment Particle Physics - Phenomenology Nuclear Physics - Experiment |
| url | https://dx.doi.org/10.1140/epjc/s10052-019-7223-4 http://cds.cern.ch/record/2298154 |
| work_keys_str_mv | AT antchevg firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT aspellp firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT atanassovi firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT avativ firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT baechlerj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT barreracbaldenegro firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT berardiv firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT berrettim firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT bossinie firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT bottigliu firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT bozzom firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT brucer firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT burkhardth firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT cafagnafs firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT catanesimg firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT csanadm firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT csorgot firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT deilem firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT deleonardisf firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT dorazioa firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT doubekm firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT druzhkind firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT eggertk firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT ereminv firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT ferrof firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT fiergolskia firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT garciaf firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT garciamoralesh firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT georgievv firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT gianis firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT grzankal firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT hammerbauerj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT heinoj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT helanderp firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT isidorit firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT ivanchenkov firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT jandam firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT kareva firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT kasparj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT kopalj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT kundratv firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT lamis firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT latinog firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT lauhakangasr firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT linhartr firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT lindseyc firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT lokajicekmv firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT losurdol firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT loveterem firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT rodriguezflucas firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT macrim firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT malawskim firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT mereghettia firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT minafran firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT minutolis firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT mirarchid firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT naaranojat firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT nemesf firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT niewiadomskih firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT novakt firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT oliverie firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT oljemarkf firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT oriunnom firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT osterbergk firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT palazzip firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT passarov firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT peroutkaz firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT prochazkaj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT quintom firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT radermachere firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT radicionie firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT ravottif firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT redaellis firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT robuttie firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT royonc firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT ruggierog firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT saarikkoh firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT salvachuab firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT scribanoa firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT sirokyj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT smajekj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT snoeysw firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT stefanovitchr firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT sziklaij firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT taylorc firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT tcherniaeve firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT turinin firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT vacekv firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT valentinog firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT weltij firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT wenningerj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT williamsj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT wyszkowskip firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT zichj firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate AT zielinskik firstdeterminationoftherhoparameteratsqrts13tevprobingtheexistenceofacolourlesscoddthreegluoncompoundstate |