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Measurements of the cross sections for open chasm and beauty production in gamma gamma collisions at root s=189-202 GeV
Authors :
Acciarri, M Achard, P Adriani, O Aguilar-Benitez, M Alcaraz, J Alemanni, G Allaby, J Aloisio, A Alviggi, MG Ambrosi, G Anderhub, H Andreev, VP Angelescu, T Anselmo, F Arefiev, A Azemoon, T Aziz, T Bagnaia, P Bajo, A Baksay, L Balandras, A Baldew, SV Banerjee, S Barczyk, A Barillere, 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, BL Bhattacharya, S Biasini, M Biland, A Blaising, JJ Blyth, SC Bobbink, GJ Bohm, A Boldizsar, L Borgia, B Bourilkov, D Bourquin, M Braccini, S Branson, JG Brochu, F Buffini, A Buijs, A Burger, JD Burger, WJ Cai, XD Capell, M Romeo, GC Carlino, G Cartacci, AM Casaus, J Castellini, G Cavallari, F Cavallo, N Cecchi, C Cerrada, M Cesaroni, F Chamizo, M Chang, YH Chaturvedi, UK Chemarin, M Chen, A Chen, G Chen, GM Chen, HF Chen, HS Chiefari, G Cifarelli, L Cindolo, F Civinini, C Clare, I Clare, R Coignet, G Colino, N Costantini, S Cotorobai, F de la Cruz, B Csilling, A Cucciarelli, S Dai, TS van Dalen, JA D'Alessandro, R de Asmundis, R Deglon, P Degre, A Deiters, K della Volpe, D Delmeire, E Denes, P DeNotaristefani, F De Salvo, A Diemoz, M Dierckxsens, M van Dierendonck, D Dionisi, C Dittmar, M Dominguez, A Doria, A Dova, MT Duchesneau, D Dufournaud, D Duinker, P Duran, I El Mamouni, H Engler, A Eppling, FJ Erne, FC Ewers, A Extermann, P Fabre, M Falagan, MA Falciano, S Favara, A Fay, J Fedin, O Felcini, M Ferguson, T Fesefeldt, H Fiandrini, E Field, JH Filthaut, F Fisher, PH Fisk, I Forconi, G Freudenreich, K Furetta, C Galaktionov, Y Ganguli, SN Garcia-Abia, P Gataullin, M Gau, SS Gentile, S Gheordanescu, N Giagu, S Gong, ZF Grenier, G Grimm, O Gruenewald, MW Guida, M van Gulik, R Gupta, VK Gurtu, A Gutay, LJ Haas, D Hasan, A Hatzifotiadou, D Hebbeker, T Herve, A Hidas, P Hirschfelder, J Hofer, H Holzner, G Hoorani, H Hou, SR Hu, Y Iashvili, I Jin, BN Jones, LW de Jong, P Josa-Mutuberia, I Khan, RA Kafer, D Kaur, M Kienzle-Focacci, MN Kim, D Kim, JK Kirkby, J Kiss, D Kittel, W Klimentov, A Konig, AC Kopal, M Kopp, A Koutsenko, V Kraber, M Kraemer, RW Krenz, W Kruger, A Kunin, A de Guevara, PL Laktineh, I Landi, G Lebeau, M Lebedev, A Lebrun, P Lecomte, P Lecoq, P Le Coultre, P Lee, HJ Le Goff, JM Leiste, R Levtchenko, P Li, C Likhoded, S Lin, CH Lin, WT Linde, FL Lista, L Liu, ZA Lohmann, W Longo, E Lu, YS Lubelsmeyer, K Luci, C Luckey, D Lugnier, L Luminari, L Lustermann, W Ma, WG Maity, M Malgeri, L Malinin, A Mana, C Mangeol, D Mans, J Marian, G Martin, JP Marzano, F Mazumdar, K McNeil, RR Mele, S Merola, L Meschini, M Metzger, WJ von der Mey, M Mihul, A Milcent, H Mirabelli, G Mnich, J Mohanty, GB Moulik, T Muanza, GS Muijs, AJM Musicar, B Musy, M Napolitano, M Nessi-Tedaldi, F Newman, H Niessen, T Nisati, A Nowak, H Ofierzynski, R Organtini, G Oulianov, A Palomares, C Pandoulas, D Paoletti, S Paolucci, P Paramatti, R Park, HK Park, IH Passaleva, G Patricelli, S Paul, T Pauluzzi, M Paus, C Pauss, F Pedace, M Pensotti, S Perret-Gallix, D Petersen, B Piccolo, D Pierella, F Pieri, M Piroue, PA Pistolesi, E Plyaskin, V Pohl, M Pojidaev, V Postema, H Pothier, J Prokofiev, DO Prokofiev, D Quartieri, J Rahal-Callot, G Rahaman, MA Raics, P Raja, N Ramelli, R Rancoita, PG Ranieri, R Raspereza, A Raven, G Razis, P Ren, D Rescigno, M Reucroft, S Riemann, S Riles, K Rodin, J Roe, BP Romero, L Rosca, A Rosier-Lees, S Roth, S Rosenbleck, C Rubio, JA Ruggiero, G Rykaczewski, H Saremi, S Sarkar, S Salicio, J Sanchez, E Sanders, MP Schafer, C Schegelsky, V Schmidt-Kaerst, S Schmitz, D Schopper, H Schotanus, DJ Schwering, G Sciacca, C Seganti, A Servoli, L Shevchenko, S Shivarov, N Shoutko, V Shumilov, E Shvorob, A Siedenburg, T Son, D Smith, B Spillantini, P Steuer, M Stickland, DP Stone, A Stoyanov, B Straessner, A Sudhakar, K Sultanov, G Sun, LZ Sushkov, S Suter, H Swain, JD Szillasi, Z Sztaricskai, T Tang, XW Tauscher, L Taylor, L Tellili, B Timmermans, C Ting, SCC Ting, SM Tonwar, SC Toth, J Tully, C Tung, KL Uchida, Y Ulbricht, J Valente, E Vesztergombi, G Vetlitsky, I Vicinanza, D Viertel, G Villa, S Vivargent, M Vlachos, S Vodopianov, I Vogel, H Vogt, H Vorobiev, I Vorobyov, AA Vorvolakos, A Wadhwa, M Wallraff, W Wang, M Wang, XL Wang, ZM Weber, A Weber, M Wienemann, P Wilkens, H Wu, SX Wynhoff, S Xia, L Xu, ZZ Yamamoto, J Yang, BZ Yang, CG Yang, HJ Yang, M Ye, JB Yeh, SC Zalite, A Zalite, Y Zhang, ZP Zhu, GY Zhu, RY Zichichi, A Zilizi, G Zimmermann, B Zoller, M Collaboration, L Acciarri, M. Achard, P. Adriani, O. Aguilar Benitez, M. Alcaraz, J. Alemanni, G. Allaby, J. Aloisio, Alberto Alviggi, Mariagrazia Ambrosi, G. Anderhub, H. Andreev, V. P. Angelescu, T. Anselmo, F. Arefiev, A. Azemoon, T. Aziz, T. Bagnaia, P. Bajo, A. Baksay, L. Balandras, A. Baldew, S. V. Banerjee, S. Barczyk, A. Barillere, 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. L. Bhattacharya, S. Biasini, M. Biland, A. Blaising, J. J. Blyth, S. C. Bobbink, G. J. Bohm, A. Boldizsar, L. Borgia, B. Bourilkov, D. Bourquin, M. Braccini, S. Branson, J. G. Brochu, F. Buffini, A. Buijs, A. Burger, J. D. Burger, W. J. Cai, X. D. Capell, M. Romeo, G. C. Carlino, G. Cartacci, A. M. Casaus, J. Castellini, G. Cavallari, F. Cavallo, N. Cecchi, C. Cerrada, M. Cesaroni, F. Chamizo, M. Chang, Y. H. Chaturvedi, U. K. Chemarin, M. Chen, A. Chen, G. Chen, G. M. Chen, H. F. Chen, H. S. Chiefari, Giovanni Cifarelli, L. Cindolo, F. Civinini, C. I, C. Clare, R. Coignet, G. Colino, N. Costantini, S. Cotorobai, F. B. d., La Csilling, A. Cucciarelli, S. Dai, T. S. Van, J. A. D'Alessandro, R. Asmundis, R. d. Deglon, P. Degre, A. Deiters, K. DELLA VOLPE, Domenico Delmeire, E. Denes, P. Denotaristefani, F. Salvo, A. D. Diemoz, M. Dierckxsens, M. Dierendonck, D. v. Dionisi, C. Dittmar, M. Dominguez, A. Doria, A. Dova, M. T. Duchesneau, D. Dufournaud, D. Duinker, P. I, D. Mamouni, H. E. Engler, A. Eppling, F. J. Erne, F. C. Ewers, A. Extermann, P. Fabre, M. Falagan, M. A. Falciano, S. Favara, A. Fay, J. Fedin, O. Felcini, M. Ferguson, T. Fesefeldt, H. Fiandrini, E. Field, J. H. Filthaut, F. Fisher, P. H. I, F. Forconi, G. Freudenreich, K. Furetta, C. Galaktionov, Y. Ganguli, S. N. Garcia Abia, P. Gataullin, M. Gau, S. S. Gentile, S. Gheordanescu, N. Giagu, S. Gong, Z. F. Grenier, G. Grimm, O. Gruenewald, M. W. Guida, M. Gulik, R. v. Gupta, V. K. Gurtu, A. Gutay, L. J. Haas, D. Hasan, A. Hatzifotiadou, D. Hebbeker, T. Herve, A. Hidas, P. Hirschfelder, J. Hofer, H. Holzner, G. Hoorani, H. Sr, H. Hu, Y. I, I. Jin, B. N. Jones, L. W. Jong, P. d. I, J. Khan, R. A. Kafer, D. Kaur, M. Kienzle Focacci, M. N. Kim, D. Kim, J. K. Kirkby, J. Kiss, D. Kittel, W. Klimentov, A. Konig, A. C. Kopal, M. Kopp, A. V, K. Kraber, M. Kraemer, R. W. Krenz, W. Kruger, A. Kunin, A. P. L., De I, L. Landi, G. Lebeau, M. Lebedev, A. Lebrun, P. Lecomte, P. Lecoq, P. Coultre, P. L. Lee, H. J. J. M., Le Leiste, R. Levtchenko, P. Li, C. Likhoded, S. Lin, C. H. Lin, W. T. Linde, F. L. Lista, L. Liu, Z. A. Lohmann, W. Longo, E. Y. S., Lu Lubelsmeyer, K. Luci, C. Luckey, D. Lugnier, L. Luminari, L. Lustermann, W. W. G., Ma Maity, M. Malgeri, L. Malinin, A. Mana, C. Mangeol, D. Mans, J. Marian, G. Martin, J. P. Marzano, F. Mazumdar, K. Mcneil, R. R. Mele, S. Merola, Leonardo Meschini, M. Metzger, W. J. Der, M. v. Mihul, A. Milcent, H. Mirabelli, G. Mnich, J. Mohanty, G. B. Moulik, T. Muanza, G. S. A. J. M. Musicar, B. Musy, M. Napolitano, Marco Nessi Tedaldi, F. Newman, H. Niessen, T. Nisati, A. Nowak, H. Ofierzynski, R. Organtini, G. Oulianov, A. Palomares, C. Pandoulas, D. Paoletti, S. Paolucci, P. Paramatti, R. Park, H. K. Park, I. H. Passaleva, G. Patricelli, Sergio Paul, T. Pauluzzi, M. Paus, C. Pauss, F. Pedace, M. Pensotti, S. Perret Gallix, D. Petersen, B. Piccolo, D. Pierella, F. Pieri, M. Piroue, P. A. Pistolesi, E. V, P. Pohl, M. Postema, H. Pothier, J. Prokofiev, D. O. Prokofiev, D. Quartieri, J. Rahal Callot, G. Rahaman, M. A. Raics, P. Raja, N. Ramelli, R. Rancoita, P. G. Ranieri, R. Raspereza, A. Raven, G. Razis, P. Ren, D. Rescigno, M. Reucroft, S. Riemann, S. Riles, K. Rodin, J. Roe, B. P. Romero, L. Rosca, A. Rosier Lees, S. Roth, S. Rosenbleck, C. Rubio, J. A. Ruggiero, G. Rykaczewski, H. Saremi, S. Sarkar, S. Salicio, J. Sanchez, E. Sanders, M. P. Schafer, C. V, S. Schmidt Kaerst, S. Schmitz, D. Schopper, H. Schotanus, D. J. Schwering, G. Sciacca, Crisostomo Seganti, A. Servoli, L. Shevchenko, S. Shivarov, N. Shumilov, E. Shvorob, A. Siedenburg, T. Son, D. Smith, B. Spillantini, P. Steuer, M. Stickland, D. P. Stone, A. Stoyanov, B. Straessner, A. Sudhakar, K. Sultanov, G. Sun, L. Z. Sushkov, S. Suter, H. Swain, J. D. Szillasi, Z. Sztaricskai, T. Tang, X. W. Tauscher, L. Taylor, L. Tellili, B. Timmermans, C. S. C. C. Ting, S. M. Tonwar, S. C. Toth, J. Tully, C. Tung, K. L. Uchida, Y. Ulbricht, J. Valente, E. Vesztergombi, G. I, V. Vicinanza, D. Viertel, G. Villa, S. Vivargent, M. Vlachos, S. Vogel, H. Vogt, H. Vorobyov, A. A. Vorvolakos, A. Wadhwa, M. Wallraff, W. Wang, M. Wang, X. L. Wang, Z. M. Weber, A. Weber, M. Wienemann, P. Wilkens, H. S. X., Wu Wynhoff, S. Xia, L. Z. Z., Xu Yamamoto, J. Yang, B. Z. Yang, C. G. Yang, H. J. Yang, M. J. B., Ye Yeh, S. C. Zalite, A. Zalite, Y. Zhang, Z. P. Zhu, G. Y. Zhu, R. Y. Zichichi, A. Zilizi, G. Zimmermann, B. Zoller, M.
Publication Year :
2001
Abstract
The production of c and b quarks gamma gamma collisions is studied with the L3 detector at LEP with 410 pb(-1) of data, collected at centre-of-mass energies from 189 GeV to 202 GeV. Hadronic final states containing c and b quarks are identified by detecting electrons or muons from their semileptonic decays. The cross sections sigma (e(+)e(-) --> e(+)e(-)c (c) over barX) and sigma (e(+)e(-) --> e(+)e(-)b (b) over barX) are measured and compared to next-to-leading order perturbative QCD calculations. The cross section of b production is measured in gamma gamma collisions for the first time. It is in excess of the QCD prediction by a factor of three. (C) 2001 Published by Elsevier Science B.V.
Details
Database :
OpenAIRE
Accession number :
edsair.dedup.wf.001..d0d06df445458f52011df9962a8f3db9