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

Achard, P; Adriani, O; Aguilar Benitez, M; Alcaraz, J; Alemanni, G; Allaby, J; Aloisio, A; Alviggi, M; Anderhub, H; Andreev, V; Anselmo, F; Arefiev, A; Azemoon, T; Aziz, T; Bagnaia, P; Bajo, A; Baksay, G; Baksay, L; Baldew, S; Banerjee, S; Banerjee, S; Barczyk, A; Barillère, R; Bartalini, P; Basile, M; Batalova, N; Battiston, R; Bay, A; Becattini, F; Becker, U; Behner, F; Bellucci, L; Berbeco, R; Berdugo, J; Berges, P; Bertucci, B; Betev, B; Biasini, M; Biglietti, M; Biland, A; Blaising, J; Blyth, S; Bobbink, G; Böhm, A; Boldizsar, L; Borgia, B; Bottai, S; Bourilkov, D; Bourquin, M; Braccini, S; Branson, J; Brochu, F; Burger, J; Burger, W; Cai, X; Capell, M; Cara Romeo, G; Carlino, G; Cartacci, A; Casaus, J; Cavallari, F; Cavallo, N; Cecchi, C; Cerrada, M; Chamizo, M; Chang, Y; Chemarin, M; Chen, A; Chen, G; Chen, G; Chen, H; Chen, H; Chiefari, G; Cifarelli, L; Cindolo, F; Clare, I; Clare, R; Coignet, G; Colino, N; Costantini, S; de La Cruz, B; Cucciarelli, S; de Asmundis, R; Déglon, P; Debreczeni, J; Degré, A; Dehmelt, K; Deiters, K; Della Volpe, D; Delmeire, E; Denes, P; Denotaristefani, F; de Salvo, A; Diemoz, M; Dierckxsens, M; Dionisi, C; Dittmar, M; Doria, A; Dova, M; Duchesneau, D; Duda, M; Echenard, B; Eline, A; El Hage, A; El Mamouni, H; Engler, A; Eppling, F; Extermann, P; Falagan, M; Falciano, S; Favara, A; Fay, J; Fedin, O; Felcini, M; Ferguson, T; Fesefeldt, H; Fiandrini, E; Field, J; Filthaut, F; Fisher, P; Fisher, W; Forconi, G; Freudenreich, K; Furetta, C; Galaktionov, Y; Ganguli, S; Garcia Abia, P; Gataullin, M; Gentile, S; Giagu, S; Gong, Z; Grenier, G; Grimm, O; Gruenewald, M; Gupta, V; Gurtu, A; Gutay, L; Haas, D; Hatzifotiadou, D; Hebbeker, T; Hervé, A; Hirschfelder, J; Hofer, H; Hohlmann, M; Holzner, G; Hou, S; Jin, B; Jindal, P; Jones, L; de Jong, P; Josa Mutuberría, I; Kaur, M; Kienzle Focacci, M; Kim, J; Kirkby, J; Kittel, W; Klimentov, A; König, A; Kopal, M; Koutsenko, V; Kräber, M; Kraemer, R; Krüger, A; Kunin, A; Ladron de Guevara, P; Laktineh, I; Landi, G; Lebeau, M; Lebedev, A; Lebrun, P; Lecomte, P; Lecoq, P; Le Coultre, P; Le Goff, J; Leiste, R; Levtchenko, M; Levtchenko, P; Li, C; Likhoded, S; Lin, C; Lin, W; Linde, F; Lista, L; Liu, Z; Lohmann, W; Longo, E; Ys, L; Luci, C; Luminari, L; Lustermann, W; Wg, M; Malgeri, L; Malinin, A; Maña, C; Mans, J; Martin, J; Marzano, F; Mazumdar, K; Mcneil, R; Mele, S; Merola, L; Meschini, M; Metzger, W; Mihul, A; Milcent, H; Mirabelli, G; Mnich, J; Mohanty, G; Muanza, G; Muijs, A; Musy, M; Nagy, S; Natale, S; Napolitano, M; Nessi Tedaldi, F; Newman, H; Nisati, A; Novak, T; Nowak, H; Ofierzynski, R; Organtini, G; Pal, I; Palomares, C; Paolucci, P; Paramatti, R; Passaleva, G; Patricelli, S; Paul, T; Pauluzzi, M; Paus, C; Pauss, F; Pedace, M; Pensotti, S; Perret Gallix, D; Piccolo, D; Pierella, F; Pieri, M; Pioppi, M; Piroué, P; Pistolesi, E; Plyaskin, V; Pohl, M; Pojidaev, V; Pothier, J; Prokofiev, D; Rahal Callot, G; Rahaman, M; Raics, P; Raja, N; Ramelli, R; Rancoita, P; Ranieri, R; Raspereza, A; Razis, P; Rembeczki, S; Ren, D; Rescigno, M; Reucroft, S; Riemann, S; Riles, K; Roe, B; Romero, L; Rosca, A; Rosemann, C; Rosenbleck, C; Rosier Lees, S; Roth, S; Rubio, J; Ruggiero, G; Rykaczewski, H; Sakharov, A; Saremi, S; Sarkar, S; Salicio, J; Sanchez, E; Schäfer, C; Schegelsky, V; Schopper, H; Schotanus, D; Sciacca, C; Servoli, L; Shevchenko, S; Shivarov, N; Shoutko, V; Shumilov, E; Shvorob, A; Son, D; Souga, C; Spillantini, P; Steuer, M; Stickland, D; Stoyanov, B; Straessner, A; Sudhakar, K; Sultanov, G; Sun, L; Sushkov, S; Suter, H; Swain, J; Szillasi, Z; Tang, X; Tarjan, P; Tauscher, L; Taylor, L; Tellili, B; Teyssier, D; Timmermans, C; Ting, S; Ting, S; Tonwar, S; Tóth, J; Tully, C; Tung, K; Ulbricht, J; Valente, E; van de Walle, R; Vasquez, R; Vesztergombi, G; Vetlitsky, I; Viertel, G; Vivargent, M; Vlachos, S; Vodopianov, I; Vogel, H; Vogt, H; Vorobiev, I; Vorobyov, A; Wadhwa, M; Wang, Q; Wang, X; Wang, Z; Weber, M; Wynhoff, S; Xia, L; Z. Z, X; Yamamoto, J; Yang, B; Yang, C; Yang, H; Yang, M; Yeh, S; Zalite, A; Zalite, Y; Zhang, Z; Zhao, J; Zhu, G; Zhu, R; Zhuang, H; Zichichi, A; Zimmermann, B; Zöller, M

doi:10.1140/epjc/s10052-006-0140-3

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+→pK0S is also presented. No evidence for production of this state is found. © Springer-Verlag Berlin Heidelberg 2007.

Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., et al. (2007). Study of inclusive strange-baryon production and search for pentaquarks in two-photon collisions at LEP. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 49(2), 395-410 [10.1140/epjc/s10052-006-0140-3].