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Study of the $K^{+}K^{-} \pi^{+}\pi^{-}\pi^{0}$ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer
A spin-parity analysis of a sample of pp to K/sup +/K/sup -/ pi /sup +/ pi /sup -/ pi /sup 0/ annihilation events taken at rest in gaseous H/sub 2/ at NTP is reported. The invariant mass spectrum of the K/sup +/K/sup -/ pi /sup 0/ system shows the presence of the E/t resonance pattern at 1.42 GeV. T...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2002
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(02)02547-9 http://cds.cern.ch/record/722164 |
| _version_ | 1780903620679565312 |
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| author | Nichitiu, F Agnello, M Balestra, F Bertin, A Bonomi, G Botta, E Bressani, Tullio Bruschi, M Bussa, M P Busso, L Calvo, D Capponi, M Cerello, P G Cicalò, C Costa, S D'Isep, D De Castro, S De Galco, A Denisov, O Donzella, A Feliciello, A Filippi, A Filippini, V Fontana, A Galli, D Garfagnini, R Giacobbe, B Gianotti, P Gorchakov, O E Grasso, A Guaraldo, C Iazzi, F Lanaro, A Lodi-Rizzini, E Lucherini, V Maggiora, A Marcello, S Marconi, U Masoni, A Massa, I Mauro, S Minetti, B Mirfakhraee, N Montagna, P Panzarasa, A Panzieri, D Petrascu, C Piccinini, M Poli, M Prakhov, S N Puddu, G Rosca, A Rotondi, A Rozhdestvensky, A M Salvini, P Semprini-Cesari, N Spighi, R Tessaro, S Tosello, F Tretyak, V I Usai, G L Vagnoni, V M Vecchi, S Venturelli, L Villa, M Vitale, A Zenoni, A Zoccoli, A |
| author_facet | Nichitiu, F Agnello, M Balestra, F Bertin, A Bonomi, G Botta, E Bressani, Tullio Bruschi, M Bussa, M P Busso, L Calvo, D Capponi, M Cerello, P G Cicalò, C Costa, S D'Isep, D De Castro, S De Galco, A Denisov, O Donzella, A Feliciello, A Filippi, A Filippini, V Fontana, A Galli, D Garfagnini, R Giacobbe, B Gianotti, P Gorchakov, O E Grasso, A Guaraldo, C Iazzi, F Lanaro, A Lodi-Rizzini, E Lucherini, V Maggiora, A Marcello, S Marconi, U Masoni, A Massa, I Mauro, S Minetti, B Mirfakhraee, N Montagna, P Panzarasa, A Panzieri, D Petrascu, C Piccinini, M Poli, M Prakhov, S N Puddu, G Rosca, A Rotondi, A Rozhdestvensky, A M Salvini, P Semprini-Cesari, N Spighi, R Tessaro, S Tosello, F Tretyak, V I Usai, G L Vagnoni, V M Vecchi, S Venturelli, L Villa, M Vitale, A Zenoni, A Zoccoli, A |
| author_sort | Nichitiu, F |
| collection | CERN |
| description | A spin-parity analysis of a sample of pp to K/sup +/K/sup -/ pi /sup +/ pi /sup -/ pi /sup 0/ annihilation events taken at rest in gaseous H/sub 2/ at NTP is reported. The invariant mass spectrum of the K/sup +/K/sup -/ pi /sup 0/ system shows the presence of the E/t resonance pattern at 1.42 GeV. The analysis of this signal confirms the results obtained by the OBELIX Collaboration in previous works, namely: the existence of two pseudoscalar states at 1.413+or-0.002 and 1.460+or-0.012 GeV with widths 0.051+or-0.004 and 0.120+or-0.015 GeV, respectively. The pp system in the /sup 3/P/sub 1/ wave shows also a signal corresponding to the axial vector f/sub 1/ (1420) decaying to K*K with mass 1.420+or-0.003 GeV and width 0.061+or-0.005 GeV. A study of the incoherent phase space background shows that its origin is mostly due to the reflection of a resonant state in the K/sup +/K /sup -/ pi /sup +/ pi /sup -/ system. The isobar decomposition of this resonant state is mainly f/sub 0/(1370)( pi pi )/sub S/, its parameters are: J/sup PC/=0/sup ++/, m=1.670+or-0.02 GeV and width 0.267+or-0.036 GeV. This signal can be probably identified with another decay mode of the f/sub 0/(1710). (24 refs). |
| id | cern-722164 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2002 |
| record_format | invenio |
| spelling | cern-7221642019-09-30T06:29:59Zdoi:10.1016/S0370-2693(02)02547-9http://cds.cern.ch/record/722164engNichitiu, FAgnello, MBalestra, FBertin, ABonomi, GBotta, EBressani, TullioBruschi, MBussa, M PBusso, LCalvo, DCapponi, MCerello, P GCicalò, CCosta, SD'Isep, DDe Castro, SDe Galco, ADenisov, ODonzella, AFeliciello, AFilippi, AFilippini, VFontana, AGalli, DGarfagnini, RGiacobbe, BGianotti, PGorchakov, O EGrasso, AGuaraldo, CIazzi, FLanaro, ALodi-Rizzini, ELucherini, VMaggiora, AMarcello, SMarconi, UMasoni, AMassa, IMauro, SMinetti, BMirfakhraee, NMontagna, PPanzarasa, APanzieri, DPetrascu, CPiccinini, MPoli, MPrakhov, S NPuddu, GRosca, ARotondi, ARozhdestvensky, A MSalvini, PSemprini-Cesari, NSpighi, RTessaro, STosello, FTretyak, V IUsai, G LVagnoni, V MVecchi, SVenturelli, LVilla, MVitale, AZenoni, AZoccoli, AStudy of the $K^{+}K^{-} \pi^{+}\pi^{-}\pi^{0}$ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometerParticle Physics - ExperimentA spin-parity analysis of a sample of pp to K/sup +/K/sup -/ pi /sup +/ pi /sup -/ pi /sup 0/ annihilation events taken at rest in gaseous H/sub 2/ at NTP is reported. The invariant mass spectrum of the K/sup +/K/sup -/ pi /sup 0/ system shows the presence of the E/t resonance pattern at 1.42 GeV. The analysis of this signal confirms the results obtained by the OBELIX Collaboration in previous works, namely: the existence of two pseudoscalar states at 1.413+or-0.002 and 1.460+or-0.012 GeV with widths 0.051+or-0.004 and 0.120+or-0.015 GeV, respectively. The pp system in the /sup 3/P/sub 1/ wave shows also a signal corresponding to the axial vector f/sub 1/ (1420) decaying to K*K with mass 1.420+or-0.003 GeV and width 0.061+or-0.005 GeV. A study of the incoherent phase space background shows that its origin is mostly due to the reflection of a resonant state in the K/sup +/K /sup -/ pi /sup +/ pi /sup -/ system. The isobar decomposition of this resonant state is mainly f/sub 0/(1370)( pi pi )/sub S/, its parameters are: J/sup PC/=0/sup ++/, m=1.670+or-0.02 GeV and width 0.267+or-0.036 GeV. This signal can be probably identified with another decay mode of the f/sub 0/(1710). (24 refs).oai:cds.cern.ch:7221642002 |
| spellingShingle | Particle Physics - Experiment Nichitiu, F Agnello, M Balestra, F Bertin, A Bonomi, G Botta, E Bressani, Tullio Bruschi, M Bussa, M P Busso, L Calvo, D Capponi, M Cerello, P G Cicalò, C Costa, S D'Isep, D De Castro, S De Galco, A Denisov, O Donzella, A Feliciello, A Filippi, A Filippini, V Fontana, A Galli, D Garfagnini, R Giacobbe, B Gianotti, P Gorchakov, O E Grasso, A Guaraldo, C Iazzi, F Lanaro, A Lodi-Rizzini, E Lucherini, V Maggiora, A Marcello, S Marconi, U Masoni, A Massa, I Mauro, S Minetti, B Mirfakhraee, N Montagna, P Panzarasa, A Panzieri, D Petrascu, C Piccinini, M Poli, M Prakhov, S N Puddu, G Rosca, A Rotondi, A Rozhdestvensky, A M Salvini, P Semprini-Cesari, N Spighi, R Tessaro, S Tosello, F Tretyak, V I Usai, G L Vagnoni, V M Vecchi, S Venturelli, L Villa, M Vitale, A Zenoni, A Zoccoli, A Study of the $K^{+}K^{-} \pi^{+}\pi^{-}\pi^{0}$ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer |
| title | Study of the $K^{+}K^{-} \pi^{+}\pi^{-}\pi^{0}$ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer |
| title_full | Study of the $K^{+}K^{-} \pi^{+}\pi^{-}\pi^{0}$ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer |
| title_fullStr | Study of the $K^{+}K^{-} \pi^{+}\pi^{-}\pi^{0}$ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer |
| title_full_unstemmed | Study of the $K^{+}K^{-} \pi^{+}\pi^{-}\pi^{0}$ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer |
| title_short | Study of the $K^{+}K^{-} \pi^{+}\pi^{-}\pi^{0}$ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer |
| title_sort | study of the $k^{+}k^{-} \pi^{+}\pi^{-}\pi^{0}$ final state in antiproton annihilation at rest in gaseous hydrogen at ntp with the obelix spectrometer |
| topic | Particle Physics - Experiment |
| url | https://dx.doi.org/10.1016/S0370-2693(02)02547-9 http://cds.cern.ch/record/722164 |
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