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$\overline{p}p$ annihilation into four charged pions at rest and in flight
The spin-parity analysis of the data on the pp to 2 pi /sup +/ 2 pi /sup $/annihilation reaction at rest in liquid and in gaseous hydrogen at 3 bar pressure and in flight at p momentum of approximately= 50 MeV/c, collected by the Obelix spectrometer at the LEAR complex of CERN, is presented. The rel...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2004
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1140/epic/s2004-01811-8 http://cds.cern.ch/record/816737 |
| _version_ | 1780905432225677312 |
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| author | Salvini, P Tretyak, V I Filippini, V Fontana, A Montagna, P Panzarasa, A Rotondi, A Bargiotti, M Bertin, A Bruschi, M Capponi, M Carbone, A De Castro, S Fabbri, Franco Luigi Faccioli, P Galli, D Giacobbe, B Grimaldi, F Marconi, U Massa, I Piccinini, M Cesari, N S Spighi, R Vecchi, S Villa, M Vitale, A Zoccoli, A Bianconi, A Corradini, M Donzella, A Lodi-Rizzini, E Venturelli, L Zenoni, A Cicalò, C De Falco, A Masoni, A Puddu, G Serci, S Usai, G L Gorchakov, O E Prakhov, S N Rozhdestvensky, A M Sapozhnikov, M G Poli, M Gianotti, P Guaraldo, C Lanaro, A Lucherini, V Petrascu, C Panzieri, D Balestra, F Bussa, M P Busso, L Cerello, P Denisov, O Ferrero, L Grasso, A Maggiora, A Tosello, F Botta, E Bressani, Tullio Calvo, D De Mori, F Feliciello, A Filippi, A Marcello, S Agnello, M Iazzi, F |
| author_facet | Salvini, P Tretyak, V I Filippini, V Fontana, A Montagna, P Panzarasa, A Rotondi, A Bargiotti, M Bertin, A Bruschi, M Capponi, M Carbone, A De Castro, S Fabbri, Franco Luigi Faccioli, P Galli, D Giacobbe, B Grimaldi, F Marconi, U Massa, I Piccinini, M Cesari, N S Spighi, R Vecchi, S Villa, M Vitale, A Zoccoli, A Bianconi, A Corradini, M Donzella, A Lodi-Rizzini, E Venturelli, L Zenoni, A Cicalò, C De Falco, A Masoni, A Puddu, G Serci, S Usai, G L Gorchakov, O E Prakhov, S N Rozhdestvensky, A M Sapozhnikov, M G Poli, M Gianotti, P Guaraldo, C Lanaro, A Lucherini, V Petrascu, C Panzieri, D Balestra, F Bussa, M P Busso, L Cerello, P Denisov, O Ferrero, L Grasso, A Maggiora, A Tosello, F Botta, E Bressani, Tullio Calvo, D De Mori, F Feliciello, A Filippi, A Marcello, S Agnello, M Iazzi, F |
| author_sort | Salvini, P |
| collection | CERN |
| description | The spin-parity analysis of the data on the pp to 2 pi /sup +/ 2 pi /sup $/annihilation reaction at rest in liquid and in gaseous hydrogen at 3 bar pressure and in flight at p momentum of approximately= 50 MeV/c, collected by the Obelix spectrometer at the LEAR complex of CERN, is presented. The relative branching ratios (a /sub 1/ (1260) to sigma pi )/(a/sub 1/(1260) to rho pi ) = 0.06 +or- 0.05 and ( pi (1300) to sigma pi )/( pi (1300) to rho pi ) = 2.2 +or- 0.4 are obtained. It is also shown that the inclusion of the exotic meson pi /sub 1/(1400), J/sup PC/ = 1/sup -+/, mass and width M = 1.384 +or- 0.028, Gamma = 0.378 +or- 0.058 GeV/c/sup 2/, in its decay to rho pi , improves the fit and some implications of these results are briefly discussed. The relative S and P-wave annihilation percentages in four charged pions at two target densities are obtained. (53 refs). |
| id | cern-816737 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2004 |
| record_format | invenio |
| spelling | cern-8167372019-09-30T06:29:59Zdoi:10.1140/epic/s2004-01811-8http://cds.cern.ch/record/816737engSalvini, PTretyak, V IFilippini, VFontana, AMontagna, PPanzarasa, ARotondi, ABargiotti, MBertin, ABruschi, MCapponi, MCarbone, ADe Castro, SFabbri, Franco LuigiFaccioli, PGalli, DGiacobbe, BGrimaldi, FMarconi, UMassa, IPiccinini, MCesari, N SSpighi, RVecchi, SVilla, MVitale, AZoccoli, ABianconi, ACorradini, MDonzella, ALodi-Rizzini, EVenturelli, LZenoni, ACicalò, CDe Falco, AMasoni, APuddu, GSerci, SUsai, G LGorchakov, O EPrakhov, S NRozhdestvensky, A MSapozhnikov, M GPoli, MGianotti, PGuaraldo, CLanaro, ALucherini, VPetrascu, CPanzieri, DBalestra, FBussa, M PBusso, LCerello, PDenisov, OFerrero, LGrasso, AMaggiora, ATosello, FBotta, EBressani, TullioCalvo, DDe Mori, FFeliciello, AFilippi, AMarcello, SAgnello, MIazzi, F$\overline{p}p$ annihilation into four charged pions at rest and in flightParticle Physics - ExperimentThe spin-parity analysis of the data on the pp to 2 pi /sup +/ 2 pi /sup $/annihilation reaction at rest in liquid and in gaseous hydrogen at 3 bar pressure and in flight at p momentum of approximately= 50 MeV/c, collected by the Obelix spectrometer at the LEAR complex of CERN, is presented. The relative branching ratios (a /sub 1/ (1260) to sigma pi )/(a/sub 1/(1260) to rho pi ) = 0.06 +or- 0.05 and ( pi (1300) to sigma pi )/( pi (1300) to rho pi ) = 2.2 +or- 0.4 are obtained. It is also shown that the inclusion of the exotic meson pi /sub 1/(1400), J/sup PC/ = 1/sup -+/, mass and width M = 1.384 +or- 0.028, Gamma = 0.378 +or- 0.058 GeV/c/sup 2/, in its decay to rho pi , improves the fit and some implications of these results are briefly discussed. The relative S and P-wave annihilation percentages in four charged pions at two target densities are obtained. (53 refs).oai:cds.cern.ch:8167372004 |
| spellingShingle | Particle Physics - Experiment Salvini, P Tretyak, V I Filippini, V Fontana, A Montagna, P Panzarasa, A Rotondi, A Bargiotti, M Bertin, A Bruschi, M Capponi, M Carbone, A De Castro, S Fabbri, Franco Luigi Faccioli, P Galli, D Giacobbe, B Grimaldi, F Marconi, U Massa, I Piccinini, M Cesari, N S Spighi, R Vecchi, S Villa, M Vitale, A Zoccoli, A Bianconi, A Corradini, M Donzella, A Lodi-Rizzini, E Venturelli, L Zenoni, A Cicalò, C De Falco, A Masoni, A Puddu, G Serci, S Usai, G L Gorchakov, O E Prakhov, S N Rozhdestvensky, A M Sapozhnikov, M G Poli, M Gianotti, P Guaraldo, C Lanaro, A Lucherini, V Petrascu, C Panzieri, D Balestra, F Bussa, M P Busso, L Cerello, P Denisov, O Ferrero, L Grasso, A Maggiora, A Tosello, F Botta, E Bressani, Tullio Calvo, D De Mori, F Feliciello, A Filippi, A Marcello, S Agnello, M Iazzi, F $\overline{p}p$ annihilation into four charged pions at rest and in flight |
| title | $\overline{p}p$ annihilation into four charged pions at rest and in flight |
| title_full | $\overline{p}p$ annihilation into four charged pions at rest and in flight |
| title_fullStr | $\overline{p}p$ annihilation into four charged pions at rest and in flight |
| title_full_unstemmed | $\overline{p}p$ annihilation into four charged pions at rest and in flight |
| title_short | $\overline{p}p$ annihilation into four charged pions at rest and in flight |
| title_sort | $\overline{p}p$ annihilation into four charged pions at rest and in flight |
| topic | Particle Physics - Experiment |
| url | https://dx.doi.org/10.1140/epic/s2004-01811-8 http://cds.cern.ch/record/816737 |
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