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Study of inclusive strange-baryon production and search for pentaquarks in two-photon collisions at LEP

  • P. Achard
  • , O. Adriani
  • , M. Aguilar-Benitez
  • , J. Alcaraz
  • , G. Alemanni
  • , J. Allaby
  • , A. Aloisio
  • , M. G. Alviggi
  • , H. Anderhub
  • , V. P. Andreev
  • , F. Anselmo
  • , A. Arefiev
  • , T. Azemoon
  • , T. Aziz
  • , P. Bagnaia
  • , A. Bajo
  • , G. Baksay
  • , L. Baksay
  • , S. V. Baldew
  • , S. Banerjee
  • S. Banerjee, A. Barczyk, R. Barillère, P. Bartalini, M. Basile, N. Batalova, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, L. Bellucci, R. Berbeco, J. Berdugo, P. Berges, B. Bertucci, B. L. Betev, M. Biasini, M. Biglietti, A. Biland, J. J. Blaising, S. C. Blyth, G. J. Bobbink, A. Böhm, L. Boldizsar, B. Borgia, S. Bottai, D. Bourilkov, M. Bourquin, S. Braccini, J. G. Branson, F. Brochu, J. D. Burger, W. J. Burger, X. D. Cai, M. Capell, G. Cara Romeo, G. Carlino, A. Cartacci, J. Casaus, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, M. Chamizo, Y. H. Chang, M. Chemarin, A. Chen, G. Chen, G. M. Chen, H. F. Chen, H. S. Chen, G. Chiefari, L. Cifarelli, F. Cindolo, I. Clare, R. Clare, G. Coignet, N. Colino, S. Costantini, B. De La Cruz, S. Cucciarelli, R. De Asmundis, P. Déglon, J. Debreczeni, A. Degré, K. Dehmelt, K. Deiters, D. Della Volpe, E. Delmeire, P. Denes, F. Denotaristefani, A. De Salvo, M. Diemoz, M. Dierckxsens, C. Dionisi, M. Dittmar, A. Doria, M. T. Dova, D. Duchesneau, M. Duda, B. Echenard, A. Eline, A. El Hage, H. El Mamouni, A. Engler, F. J. Eppling, P. Extermann, M. A. Falagan, S. Falciano, A. Favara, J. Fay, O. Fedin, M. Felcini, T. Ferguson, H. Fesefeldt, E. Fiandrini, J. H. Field, F. Filthaut, P. H. Fisher, W. Fisher, G. Forconi, K. Freudenreich, C. Furetta, Y. Galaktionov, S. N. Ganguli, P. Garcia-Abia, M. Gataullin, S. Gentile, S. Giagu, Z. F. Gong, G. Grenier, O. Grimm, M. W. Gruenewald, V. K. Gupta, A. Gurtu, L. J. Gutay, D. Haas, D. Hatzifotiadou, T. Hebbeker, A. Hervé, J. Hirschfelder, H. Hofer, M. Hohlmann, G. Holzner, S. R. Hou, B. N. Jin, P. Jindal, L. W. Jones, P. De Jong, I. Josa-Mutuberría, M. Kaur, M. N. Kienzle-Focacci, J. K. Kim, J. Kirkby, W. Kittel, A. Klimentov, A. C. König, M. Kopal, V. Koutsenko, M. Kräber, R. W. Kraemer, A. Krüger, A. Kunin, P. Ladron De Guevara, I. Laktineh, G. Landi, M. Lebeau, A. Lebedev, P. Lebrun, P. Lecomte, P. Lecoq, P. Le Coultre, J. M. Le Goff, R. Leiste, M. Levtchenko, P. Levtchenko, C. Li, S. Likhoded, C. H. Lin, W. T. Lin, F. L. Linde, L. Lista, Z. A. Liu, W. Lohmann, E. Longo, Y. S. Lu, C. Luci, L. Luminari, W. Lustermann, W. G. Ma, L. Malgeri, A. Malinin, C. Maña, J. Mans, J. P. Martin, F. Marzano, K. Mazumdar, R. R. McNeil, S. Mele, L. Merola, M. Meschini, W. J. Metzger, A. Mihul, H. Milcent, G. Mirabelli, J. Mnich, G. B. Mohanty, G. S. Muanza, A. J.M. Muijs, M. Musy, S. Nagy, S. Natale, M. Napolitano, F. Nessi-Tedaldi, H. Newman, A. Nisati, T. Novak, H. Nowak, R. Ofierzynski, G. Organtini, I. Pal, C. Palomares, P. Paolucci, R. Paramatti, G. Passaleva, S. Patricelli, T. Paul, M. Pauluzzi, C. Paus, F. Pauss, M. Pedace, S. Pensotti, D. Perret-Gallix, D. Piccolo, F. Pierella, M. Pieri, M. Pioppi, P. A. Piroué, E. Pistolesi, V. Plyaskin, M. Pohl, V. Pojidaev, J. Pothier, D. Prokofiev, G. Rahal-Callot, M. A. Rahaman, P. Raics, N. Raja, R. Ramelli, P. G. Rancoita, R. Ranieri, A. Raspereza, P. Razis, S. Rembeczki, D. Ren, M. Rescigno, S. Reucroft, S. Riemann, K. Riles, B. P. Roe, L. Romero, A. Rosca, C. Rosemann, C. Rosenbleck, S. Rosier-Lees, S. Roth, J. A. Rubio, G. Ruggiero, H. Rykaczewski, A. Sakharov, S. Saremi, S. Sarkar, J. Salicio, E. Sanchez, C. Schäfer, V. Schegelsky, H. Schopper, D. J. Schotanus, C. Sciacca, L. Servoli, S. Shevchenko, N. Shivarov, V. Shoutko, E. Shumilov, A. Shvorob, D. Son, C. Souga, P. Spillantini, M. Steuer, D. P. Stickland, B. Stoyanov, A. Straessner, K. Sudhakar, G. Sultanov, L. Z. Sun, S. Sushkov, H. Suter, J. D. Swain, Z. Szillasi, X. W. Tang, P. Tarjan, L. Tauscher, L. Taylor, B. Tellili, D. Teyssier, C. Timmermans, S. C.C. Ting, S. M. Ting, S. C. Tonwar, J. Tóth, C. Tully, K. L. Tung, J. Ulbricht, E. Valente, R. T. Van De Walle, R. Vasquez, G. Vesztergombi, I. Vetlitsky, G. Viertel, M. Vivargent, S. Vlachos, I. Vodopianov, H. Vogel, H. Vogt, I. Vorobiev, A. A. Vorobyov, M. Wadhwa, Q. Wang, X. L. Wang, Z. M. Wang, M. Weber, S. Wynhoff, L. Xia, Z. Z. Xu, J. Yamamoto, B. Z. Yang, C. G. Yang, H. J. Yang, M. Yang, S. C. Yeh, A. Zalite, Y. Zalite, Z. P. Zhang, J. Zhao, G. Y. Zhu, R. Y. Zhu, H. L. Zhuang, A. Zichichi, B. Zimmermann, M. Zöller
  • University of Geneva
  • University of Florence
  • CIEMAT
  • University of Lausanne
  • CERN
  • National Institute for Nuclear Physics
  • Swiss Federal Institute of Technology Zurich
  • Louisiana State University
  • Petersburg Nuclear Physics InstituteGatchina
  • University of Bologna
  • Alikhanov Institute for Theoretical and Experimental Physics
  • University of Michigan, Ann Arbor
  • Tata Institute of Fundamental Research
  • University of Rome La Sapienza
  • Florida Institute of Technology
  • University of Amsterdam
  • IN2P3-CNRS
  • Paul Scherrer Institute
  • Purdue University
  • University of Perugia
  • Massachusetts Institute of Technology
  • Carnegie Mellon University
  • RWTH Aachen University
  • Hungarian Academy of Sciences
  • University of California at San Diego
  • University of Basilicata
  • National Central University
  • Universite Claude Bernard Lyon 1
  • CAS - Institute of High Energy Physics
  • University of Science and Technology of China
  • University of Salerno
  • University of California at Riverside
  • Princeton University
  • Northeastern University
  • California Institute of Technology
  • Radboud University Nijmegen
  • University College Dublin
  • University of Basel
  • Panjab University
  • Kyungpook National University
  • German Electron Synchrotron
  • University of Bucharest
  • University of Debrecen
  • University of Cyprus
  • University of Hamburg
  • Bulgarian Academy of Sciences
  • National Tsing Hua University
  • ICSC - World Laboratory

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Measurements of inclusive production of the Λ, Ξ- and Ξ*(1530) baryons in two-photon collisions with the L3 detector at LEP are presented. The inclusive differential cross sections for Λ and Ξ- are measured as a function of the baryon transverse momentum, pt, and pseudo-rapidity, η. The mean number of Λ, Ξ- and Ξ*(1530) baryons per hadronic two-photon event is determined in the kinematic range 0.4 GeV<p t<2.5 GeV, |η|<1.2. Overall agreement with the theoretical models and Monte Carlo predictions is observed. A search for inclusive production of the pentaquark θ+(1540) in two-photon collisions through the decay θ+→pK0 S is also presented. No evidence for production of this state is found.

Original languageEnglish
Pages (from-to)395-410
Number of pages16
JournalEuropean Physical Journal C
Volume49
Issue number2
DOIs
StatePublished - Jan 2007

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