Search for the pentaquark candidate Θ(1540)+ in the hyperon beam experiment WA89

Adamovich, M. I.; Alexandrov, Y. A.; Baranov, S. P.; Barberis, D.; Beck, M.; Berat, C.; Beusch, W.; Boss, M.; Brons, S.; Bruckner, W.; Buenerd, M.; Busch, C.; Buscher, C.; Charignon, F.; Chauvin, J.; Chudakovc, E. A.; Dersch, U.; Dropmann, F.; Engelfried, J.; Faller, F.; Fournier, A.; Gerassimov, S. G.; Godbersen, M.; Grafstrom, P.; Haller, T.; Heidrich, M.; Hubbard, E.; Hurst, R. B.; Konigsmann, K.; Konorov, I.; Keller, N.; Martens, K.; Martin, P.; Masciocchi, S.; Michaels, R.; Muller, U.; Neeb, H.; Newbold, D.; Newsom, C.; Paul, S.; Pochodzalla, J.; Potashnikova, I.; Povh, B.; Ransome, R.; Ren, Z.; Rey-Campagnolle, M.; Rosner, G.; Rossi, L.; Rudolph, H.; Scheel, C.; Schmitt, L.; Siebert, H. W.; Simon, A.; Smith, V.; Thilmann, O.; Trombini, A.; Vesin, E.; Volkemer, B.; Vorwalter, K.; Walcher, T.; Walder, G.; Werding, R.; Wittmann, E.; Zavertyaev, M. V.

doi:10.1103/PhysRevC.72.055201

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Search for the pentaquark candidate Θ(1540)⁺ in the hyperon beam experiment WA89

Adamovich, M. I., Alexandrov, Y. A., Baranov, S. P., Barberis, D., Beck, M., Berat, C., et al. (2005). Search for the pentaquark candidate Θ(1540)⁺ in the hyperon beam experiment WA89. Physical Review C, 72(5): 055201. doi:10.1103/PhysRevC.72.055201.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-87EC-7 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-87ED-5

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Urheber:
Adamovich, M. I.¹, Autor
Alexandrov, Y. A.¹, Autor
Baranov, S. P.¹, Autor
Barberis, D.¹, Autor
Beck, M.¹, Autor
Berat, C.¹, Autor
Beusch, W.¹, Autor
Boss, M.², Autor
Brons, S.², Autor
Bruckner, W.¹, Autor
Buenerd, M.¹, Autor
Busch, C.², Autor
Buscher, C.¹, Autor
Charignon, F.¹, Autor
Chauvin, J.¹, Autor
Chudakovc, E. A.¹, Autor
Dersch, U.², Autor
Dropmann, F.², Autor
Engelfried, J.², Autor
Faller, F.¹, Autor
Fournier, A.¹, AutorGerassimov, S. G.¹, AutorGodbersen, M.², Autor         Grafstrom, P.¹, AutorHaller, T.², Autor         Heidrich, M.², Autor         Hubbard, E.¹, AutorHurst, R. B.¹, AutorKonigsmann, K.¹, AutorKonorov, I.², Autor         Keller, N.¹, AutorMartens, K.¹, AutorMartin, P.¹, AutorMasciocchi, S.³, Autor         Michaels, R.², Autor         Muller, U.¹, AutorNeeb, H.², Autor         Newbold, D.¹, AutorNewsom, C.¹, AutorPaul, S.², Autor         Pochodzalla, J.², Autor         Potashnikova, I.², Autor         Povh, B.², Autor         Ransome, R.¹, AutorRen, Z.², Autor         Rey-Campagnolle, M.¹, AutorRosner, G.¹, AutorRossi, L.¹, AutorRudolph, H.², Autor         Scheel, C.¹, AutorSchmitt, L.⁴, Autor         Siebert, H. W.¹, AutorSimon, A.², Autor         Smith, V.¹, AutorThilmann, O.², Autor         Trombini, A.³, Autor         Vesin, E.¹, AutorVolkemer, B.¹, AutorVorwalter, K.², Autor         Walcher, T.¹, AutorWalder, G.¹, AutorWerding, R.², Autor         Wittmann, E.², Autor         Zavertyaev, M. V.³, Autor          mehr..

Affiliations:
1PN Lebedev Phys Inst, Leninsky Prospect 53, Moscow 117924,; Russia; PN Lebedev Phys Inst, Moscow 117924, Russia; Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany; Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany; Univ Grenoble 1, Inst Sci Nucl, F-38026 St Martin Dheres, France; Univ Genoa, Ist Nazl Fis Nucl, Dipartimento Fis, I-16146 Genoa, Italy; CERN, CH-1211 Geneva 23, Switzerland; Univ Bristol, Bristol BS8 1TH, Avon, England, ou_persistent22
2Prof. Bogdan Povh, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907545
3Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550
4Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society, ou_904547

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Schlagwörter: 13.85.Rm, 25.80.Pw

Zusammenfassung: We report on a high-statistics search for the Theta(1540)+ resonance in Sigma--nucleus collisions at 340 GeV/c. No evidence for this resonance was found in our data sample which contains 13 million K_s⁰-->pi+pi- decays above background. For the decay channel Theta+-->K_s⁰p and the kinematic range xF> 0.05, we find the production cross section to be BR(Theta+-->K_s⁰p)sigma0<1.8 µb per nucleon at 99% C.L.