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Production of multi-strange hyperons and strange resonances in the NA49 experiment
The NA49 large-acceptance hadron spectrometer has measured strange and multi-strange hadrons from Pb+Pb and p+p collisions at the CERN SPS. Preliminary results for the transverse mass and rapidity distributions for X and Xi /sup +/ from central Pb+Pb collisions at 158 GeV c/sup -1//nudeon are presen...
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| Lenguaje: | eng |
| Publicado: |
2001
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1088/0954-3899/27/3/314 http://cds.cern.ch/record/513278 |
| _version_ | 1780897566708203520 |
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| author | Barton, R A Afanasiev, S V Anticic, T Bächler, J Barna, D Barnby, L S Bartke, Jerzy Betev, L Bialkowska, H Billmeier, A Blume, C Blyth, C O Boimska, B Botje, M Bracinik, J Brady, F P Bramm, R Brun, R Buncic, P Carr, L Cebra, D Cooper, G E Cramer, J G Csató, P Eckhardt, F Ferenc, D Filip, P Fischer, H G Fodor, Z Foka, P Y Freund, P Friese, V Ftácnik, J Gál, J Gazdzicki, M Georgopoulos, G Gladysz-Dziadus, E Hegyi, S Hlinka, V Höhne, C Igo, G Ivanov, M Jacobs, P Janik, R Jones, P G Kadija, K Kolesnikov, V I Kollegger, T Kowalski, M Van Leeuwen, M Lévai, Peter Malakhov, A I Margetis, S Markert, C Mayes, B W Melkumov, G L Mischke, A Molnár, J Nelson, J M Odyniec, Grazyna Janina Pálla, G Panagiotou, A D Petridis, A Pikna, M Pinsky, L Poskanzer, A M Prindle, D J Pühlhofer, F Reid, J G Renfordt, R E Retyk, W Ritter, H G Röhrich, D Roland, C Roland, G Rybicki, A Sammer, T Sandoval, A Sann, H Schäfer, E Schmitz, N Seyboth, P Siklér, F Sitár, B Skrzypczak, E Snellings, R Squier, G T A Stock, Reinhard Strmen, P Ströbele, H Susa, T Szarka, I Szentpétery, I Sziklai, J Toy, M Trainor, T A Trentalange, S Varga, D Vassiliou, Maria Veres, G I Vesztergombi, G Voloshin, S A Vranic, D Wang, F Weerasundara, D D Wenig, S Wetzler, A Whitten, C Xu, N Yates, T A Yoo, I K Zimányi, J |
| author_facet | Barton, R A Afanasiev, S V Anticic, T Bächler, J Barna, D Barnby, L S Bartke, Jerzy Betev, L Bialkowska, H Billmeier, A Blume, C Blyth, C O Boimska, B Botje, M Bracinik, J Brady, F P Bramm, R Brun, R Buncic, P Carr, L Cebra, D Cooper, G E Cramer, J G Csató, P Eckhardt, F Ferenc, D Filip, P Fischer, H G Fodor, Z Foka, P Y Freund, P Friese, V Ftácnik, J Gál, J Gazdzicki, M Georgopoulos, G Gladysz-Dziadus, E Hegyi, S Hlinka, V Höhne, C Igo, G Ivanov, M Jacobs, P Janik, R Jones, P G Kadija, K Kolesnikov, V I Kollegger, T Kowalski, M Van Leeuwen, M Lévai, Peter Malakhov, A I Margetis, S Markert, C Mayes, B W Melkumov, G L Mischke, A Molnár, J Nelson, J M Odyniec, Grazyna Janina Pálla, G Panagiotou, A D Petridis, A Pikna, M Pinsky, L Poskanzer, A M Prindle, D J Pühlhofer, F Reid, J G Renfordt, R E Retyk, W Ritter, H G Röhrich, D Roland, C Roland, G Rybicki, A Sammer, T Sandoval, A Sann, H Schäfer, E Schmitz, N Seyboth, P Siklér, F Sitár, B Skrzypczak, E Snellings, R Squier, G T A Stock, Reinhard Strmen, P Ströbele, H Susa, T Szarka, I Szentpétery, I Sziklai, J Toy, M Trainor, T A Trentalange, S Varga, D Vassiliou, Maria Veres, G I Vesztergombi, G Voloshin, S A Vranic, D Wang, F Weerasundara, D D Wenig, S Wetzler, A Whitten, C Xu, N Yates, T A Yoo, I K Zimányi, J |
| author_sort | Barton, R A |
| collection | CERN |
| description | The NA49 large-acceptance hadron spectrometer has measured strange and multi-strange hadrons from Pb+Pb and p+p collisions at the CERN SPS. Preliminary results for the transverse mass and rapidity distributions for X and Xi /sup +/ from central Pb+Pb collisions at 158 GeV c/sup -1//nudeon are presented. Fully integrated yields per event of 4.42+or-0.31 and 0.74+0.04 are found for Xi /sup -/ and Xi /sup +/, respectively, leading to a 4 pi Xi /sup +// Xi /sup -/ ratio of 0.17+or-0.02. The ratio Xi /sup +// Xi /sup -/ at mid-rapidity is found to be 0.22+or-0.04, agreeing with previously published values. In addition, preliminary data on the Lambda (1520) and phi (1020) resonances are presented. The Lambda (1520) multiplicity for p+p collisions is found to be 0.012+or-0.003. No signal is observed for Pb+Pb collisions and a production upper limit of 1.36 Lambda (1520) per event indicates an apparent suppression when comparing with scaled p+p data. Integrated phi (1020) yields per event are found to be 7.6+or-1.1 for Pb+Pb and 0.012+or-0.0015 for p+p collisions. No significant shift or broadening of the phi (1020) invariant mass distribution is observed in central Pb+or-Pb collisions. (10 refs). |
| id | cern-513278 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2001 |
| record_format | invenio |
| spelling | cern-5132782019-09-30T06:29:59Zdoi:10.1088/0954-3899/27/3/314http://cds.cern.ch/record/513278engBarton, R AAfanasiev, S VAnticic, TBächler, JBarna, DBarnby, L SBartke, JerzyBetev, LBialkowska, HBillmeier, ABlume, CBlyth, C OBoimska, BBotje, MBracinik, JBrady, F PBramm, RBrun, RBuncic, PCarr, LCebra, DCooper, G ECramer, J GCsató, PEckhardt, FFerenc, DFilip, PFischer, H GFodor, ZFoka, P YFreund, PFriese, VFtácnik, JGál, JGazdzicki, MGeorgopoulos, GGladysz-Dziadus, EHegyi, SHlinka, VHöhne, CIgo, GIvanov, MJacobs, PJanik, RJones, P GKadija, KKolesnikov, V IKollegger, TKowalski, MVan Leeuwen, MLévai, PeterMalakhov, A IMargetis, SMarkert, CMayes, B WMelkumov, G LMischke, AMolnár, JNelson, J MOdyniec, Grazyna JaninaPálla, GPanagiotou, A DPetridis, APikna, MPinsky, LPoskanzer, A MPrindle, D JPühlhofer, FReid, J GRenfordt, R ERetyk, WRitter, H GRöhrich, DRoland, CRoland, GRybicki, ASammer, TSandoval, ASann, HSchäfer, ESchmitz, NSeyboth, PSiklér, FSitár, BSkrzypczak, ESnellings, RSquier, G T AStock, ReinhardStrmen, PStröbele, HSusa, TSzarka, ISzentpétery, ISziklai, JToy, MTrainor, T ATrentalange, SVarga, DVassiliou, MariaVeres, G IVesztergombi, GVoloshin, S AVranic, DWang, FWeerasundara, D DWenig, SWetzler, AWhitten, CXu, NYates, T AYoo, I KZimányi, JProduction of multi-strange hyperons and strange resonances in the NA49 experimentDetectors and Experimental TechniquesThe NA49 large-acceptance hadron spectrometer has measured strange and multi-strange hadrons from Pb+Pb and p+p collisions at the CERN SPS. Preliminary results for the transverse mass and rapidity distributions for X and Xi /sup +/ from central Pb+Pb collisions at 158 GeV c/sup -1//nudeon are presented. Fully integrated yields per event of 4.42+or-0.31 and 0.74+0.04 are found for Xi /sup -/ and Xi /sup +/, respectively, leading to a 4 pi Xi /sup +// Xi /sup -/ ratio of 0.17+or-0.02. The ratio Xi /sup +// Xi /sup -/ at mid-rapidity is found to be 0.22+or-0.04, agreeing with previously published values. In addition, preliminary data on the Lambda (1520) and phi (1020) resonances are presented. The Lambda (1520) multiplicity for p+p collisions is found to be 0.012+or-0.003. No signal is observed for Pb+Pb collisions and a production upper limit of 1.36 Lambda (1520) per event indicates an apparent suppression when comparing with scaled p+p data. Integrated phi (1020) yields per event are found to be 7.6+or-1.1 for Pb+Pb and 0.012+or-0.0015 for p+p collisions. No significant shift or broadening of the phi (1020) invariant mass distribution is observed in central Pb+or-Pb collisions. (10 refs).oai:cds.cern.ch:5132782001 |
| spellingShingle | Detectors and Experimental Techniques Barton, R A Afanasiev, S V Anticic, T Bächler, J Barna, D Barnby, L S Bartke, Jerzy Betev, L Bialkowska, H Billmeier, A Blume, C Blyth, C O Boimska, B Botje, M Bracinik, J Brady, F P Bramm, R Brun, R Buncic, P Carr, L Cebra, D Cooper, G E Cramer, J G Csató, P Eckhardt, F Ferenc, D Filip, P Fischer, H G Fodor, Z Foka, P Y Freund, P Friese, V Ftácnik, J Gál, J Gazdzicki, M Georgopoulos, G Gladysz-Dziadus, E Hegyi, S Hlinka, V Höhne, C Igo, G Ivanov, M Jacobs, P Janik, R Jones, P G Kadija, K Kolesnikov, V I Kollegger, T Kowalski, M Van Leeuwen, M Lévai, Peter Malakhov, A I Margetis, S Markert, C Mayes, B W Melkumov, G L Mischke, A Molnár, J Nelson, J M Odyniec, Grazyna Janina Pálla, G Panagiotou, A D Petridis, A Pikna, M Pinsky, L Poskanzer, A M Prindle, D J Pühlhofer, F Reid, J G Renfordt, R E Retyk, W Ritter, H G Röhrich, D Roland, C Roland, G Rybicki, A Sammer, T Sandoval, A Sann, H Schäfer, E Schmitz, N Seyboth, P Siklér, F Sitár, B Skrzypczak, E Snellings, R Squier, G T A Stock, Reinhard Strmen, P Ströbele, H Susa, T Szarka, I Szentpétery, I Sziklai, J Toy, M Trainor, T A Trentalange, S Varga, D Vassiliou, Maria Veres, G I Vesztergombi, G Voloshin, S A Vranic, D Wang, F Weerasundara, D D Wenig, S Wetzler, A Whitten, C Xu, N Yates, T A Yoo, I K Zimányi, J Production of multi-strange hyperons and strange resonances in the NA49 experiment |
| title | Production of multi-strange hyperons and strange resonances in the NA49 experiment |
| title_full | Production of multi-strange hyperons and strange resonances in the NA49 experiment |
| title_fullStr | Production of multi-strange hyperons and strange resonances in the NA49 experiment |
| title_full_unstemmed | Production of multi-strange hyperons and strange resonances in the NA49 experiment |
| title_short | Production of multi-strange hyperons and strange resonances in the NA49 experiment |
| title_sort | production of multi-strange hyperons and strange resonances in the na49 experiment |
| topic | Detectors and Experimental Techniques |
| url | https://dx.doi.org/10.1088/0954-3899/27/3/314 http://cds.cern.ch/record/513278 |
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