$\chi_{c2}$ formation in two-photon collisions at LEP

Autor: 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, Baksay, L, Balandras, A, Ball, RC, Banerjee, S, Banicz, K, Barczyk, A, Barillere, R, Barone, L, Bartalini, P, Basile, M, Battiston, R, Bay, A, Becattini, F, Becker, U, Behner, F, Berdugo, J, Berges, P, Bertucci, B, Betev, BL, Bhattacharya, S, Biasini, M, Biland, A, Blaising, JJ, Blyth, SC, Bobbink, GJ, Bock, R, Bohm, A, Boldizsar, L, Borgia, B, Bourilkov, D, Bourquin, M, Braccini, S, Branson, JG, Brigljevic, V, Brochu, F, Buffini, A, Buijs, A, Burger, JD, Burger, WJ, Busenitz, J, Button, A, Cai, XD, Campanelli, M, 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, Chereau, X, Chiefari, G, Cifarelli, L, Cindolo, F, Civinini, C, Clare, I, Clare, R, Coignet, G, Colijn, AP, Colino, N, Costantini, S, Cotorobai, F, de la Cruz, B, Csilling, A, Dai, TS, van Dalen, JA, D'Alessandro, R, de Asmundis, R, Deglon, P, Degre, A, Deiters, K, della Volpe, D, Denes, P, DeNotaristefani, F, De Salvo, A, Diemoz, M, van Dierendonck, D, Di Lodovico, F, Dionisi, C, Dittmar, M, Dominguez, A, Doria, A, Dova, MT, Duchesneau, D, Dufournand, D, Duinker, P, Duran, I, El Mamouni, H, Engler, A, Eppling, FJ, Erne, FC, Extermann, P, Fabre, M, Faccini, R, Falagan, MA, Falciano, S, Favara, A, Fay, J, Fedin, O, Felcini, M, Ferguson, T, Ferroni, F, Fesefeldt, H, Fiandrini, E, Field, JH, Filthaut, F, Fisher, PH, Fisk, I, Forconi, G, Fredj, L, Freudenreich, K, Furetta, C, Galaktionov, Y, Ganguli, SN, Garcia-Abia, P, Gataullin, M, Gau, SS, Gentile, S, Gheordanescu, N, Giagu, S, Goldfarb, S, Gong, ZF, Gruenewald, MW, van Gulik, R, Gupta, VK, Gurtu, A, Gutay, LJ, Haas, D, Hartmann, B, Hasan, A, Hatzifotiadou, D, Hebbeker, T, Herve, A, Hidas, P, Hirschfelder, J, Hofer, H, Holzner, G, Hoorani, H, Hou, SR, Iashvili, I, Jin, BN, Jones, LW, de Jong, P, Josa-Mutuberria, I, Khan, RA, Kamrad, D, Kapustinsky, JS, Kaur, M, Kienzle-Focacci, MN, Kim, D, Kim, DH, Kim, JK, Kim, SC, Kinnison, WW, Kirkby, J, Kiss, D, Kittel, W, Klimentov, A, Konig, AC, Kopp, A, Korolko, I, Koutsenko, V, Kraemer, RW, Krenz, W, Kunin, A, Lacentre, P, de Guevara, PL, Laktineh, I, Landi, G, Lapoint, C, Lassila-Perini, K, Laurikainen, P, Lavorato, A, Lebeau, M, Lebedev, A, Lebrun, P, Lecomte, P, Lecoq, P, Le Coultre, P, Lee, HJ, Le Goff, JM, Leiste, R, Leonardi, E, Levtchenko, P, Li, C, Lin, CH, Lin, WT, Linde, FL, Lista, L, Liu, ZA, Lohmann, W, Longo, E, Lu, YS, Lubelsmeyer, K, Luci, C, Luckey, D, Luminari, L, Lustermann, W, Ma, WG, Maity, M, Majumder, G, Malgeri, L, Malinin, A, Mana, C, Mangeol, D, Marchesini, P, Marian, G, Martin, JP, Marzano, F, Massaro, GGG, Mazumdar, K, McNeil, RR, Mele, S, Merola, L, Meschini, M, Metzger, WJ, von der Mey, M, Migani, D, Mihul, A, Milcent, H, Mirabelli, G, Mnich, J, Molnar, P, Monteleoni, B, Moulik, T, Muanza, GS, Muheim, F, Muijs, AJM, Nahn, S, Napolitano, M, Nessi-Tedaldi, F, Newman, H, Niessen, T, Nippe, A, Nisati, A, Nowak, H, Oh, YD, Organtini, G, Ostonen, R, Palomares, C, Pandoulas, D, Paoletti, S, Paolucci, P, Park, HK, Park, IH, Pascale, G, Passaleva, G, Patricelli, S, Paul, T, Pauluzzi, M, Paus, C, Pauss, F, Peach, D, Pedace, M, Pei, YJ, Pensotti, S, Perret-Gallix, D, Petersen, B, Petrak, S, Piccolo, D, Pieri, M, Piroue, PA, Pistolesi, E, Plyaskin, V, Pohl, M, Pojidaev, V, Postema, H, Pothier, J, Produit, N, Prokofiev, D, Quartieri, J, Rahal-Callot, G, Raja, N, Rancoita, PG, Raven, G, Razis, P, Ren, D, Rescigno, M, Reucroft, S, van Rhee, T, Riemann, S, Riles, K, Robohm, A, Rodin, J, Roe, BP, Romero, L, Rosier-Lees, S, Roth, S, Rubio, JA, Ruschmeier, D, Rykaczewski, H, Sakar, S, Salicio, J, Sanchez, E, Sanders, MP, Sarakinos, ME, Schafer, C, Schegelsky, V, Schmidt-Kaerst, S, Schmitz, D, Scholz, N, Schopper, H, Schotanus, DJ, Schwenke, J, Schwering, G, Sciacca, C, Sciarrino, D, Servoli, L, Shevchenko, S, Shivarov, N, Shoutko, V, Shukla, J, Shumilov, E, Shvorob, A, Siedenburg, T, Son, D, Smith, B, Spillantini, P, Steuer, M, Stickland, DP, Stone, A, Stone, H, Stoyanov, B, Straessner, A, Sudhakar, K, Sultanov, G, Sun, LZ, Suter, H, Swain, JD, Szillasi, Z, Tang, XW, Tauscher, L, Taylor, L, Timmermans, C, Ting, SCC, Ting, SM, Tonwar, SC, Toth, J, Tully, C, Tung, KL, Uchida, Y, Ulbricht, J, Valente, E, Vesztergombi, G, Vetlitsky, I, Viertel, G, Villa, S, Vivargent, M, Vlachos, S, Vogel, H, Vogt, H, Vorobiev, I, Vorobyov, AA, Vorvolakos, A, Wadhwa, M, Wallraff, W, Wang, JC, Wang, XL, Wang, ZM, Weber, A, Wilkens, H, Wu, SX, Wynhoff, S, Xia, L, Xu, ZZ, Yang, BZ, Yang, CG, Yang, HJ, Yang, M, Ye, JB, Yeh, SC, You, JM, Zalite, A, Zalite, Y, Zemp, P, Zeng, Y, Zhang, ZP, Zhu, GY, Zhu, RY, Zichichi, A, Ziegler, F, Zilizi, G, Collaboration, L
Přispěvatelé: Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, 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., Baksay, L., Balandras, A., Ball, R. C., Banerjee, S., Banicz, K., Barczyk, A., Barillere, R., Barone, L., Bartalini, P., Basile, M., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Bhattacharya, S., Biasini, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bock, R., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brigljevic, V., Brochu, F., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Busenitz, J., Button, A., Cai, X. D., Campanelli, M., 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., Chereau, X., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., Civinini, C., Clare, I., Clare, R., Coignet, G., Colijn, A. P., Colino, N., Costantini, S., Cotorobai, F., B. d., La, Csilling, A., Dai, T. S., Van, J. A., D'Alessandro, R., Asmundis, R. d., Deglon, P., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierendonck, D. v., Lodovico, F. D., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Duchesneau, D., Dufournand, D., Duinker, P., Duran, I., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Extermann, P., Fabre, M., Faccini, R., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Ferroni, F., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisk, I., Forconi, G., Fredj, L., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gau, S. S., Gentile, S., Gheordanescu, N., Giagu, S., Goldfarb, S., Gong, Z. F., Gruenewald, M. W., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hartmann, B., Hasan, A., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Hirschfelder, J., Hofer, H., Holzner, G., Hoorani, H., Hou, S. R., Iashvili, I., Jin, B. N., Jones, L. W., Jong, P. d., Josa Mutuberria, I., Khan, R. A., Kamrad, D., Kapustinsky, J. S., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, D. H., Kim, J. K., Kim, S. C., Kinnison, W. W., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopp, A., Korolko, I., Koutsenko, V., Kraemer, R. W., Krenz, W., Kunin, A., Lacentre, P., P. L., De, Laktineh, I., Landi, G., Lapoint, C., Lassila Perini, K., Laurikainen, P., Lavorato, A., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Leonardi, E., Levtchenko, P., Li, C., 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., Luminari, L., Lustermann, W., W. G., Ma, Maity, M., Majumder, G., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Marchesini, P., Marian, G., Martin, J. P., Marzano, F., G. G. G., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Migani, D., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Molnar, P., Monteleoni, B., Moulik, T., Muanza, G. S., Muheim, F., A. J. M., Nahn, S., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nippe, A., Nisati, A., Nowak, H., Y. D., Oh, Organtini, G., Ostonen, R., Palomares, C., Pandoulas, D., Paoletti, S., Paolucci, P., Park, H. K., Park, I. H., Pascale, G., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Peach, D., Pedace, M., Pei, Y. J., Pensotti, S., Perret Gallix, D., Petersen, B., Petrak, S., Piccolo, D., Pieri, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Pothier, J., Produit, N., Prokofiev, D., Quartieri, J., Rahal Callot, G., Raja, N., Rancoita, P. G., Raven, G., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Rhee, T. v., Riemann, S., Riles, K., Robohm, A., Rodin, J., Roe, B. P., Romero, L., Rosier Lees, S., Roth, S., Rubio, J. A., Ruschmeier, D., Rykaczewski, H., Sakar, S., Salicio, J., Sanchez, E., Sanders, M. P., Sarakinos, M. E., Schafer, C., Schegelsky, V., Schmidt Kaerst, S., Schmitz, D., Scholz, N., Schopper, H., Schotanus, D. J., Schwenke, J., Schwering, G., Sciacca, Crisostomo, Sciarrino, D., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shukla, J., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Smith, B., Spillantini, P., Steuer, M., Stickland, D. P., Stone, A., Stone, H., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Suter, H., Swain, J. D., Szillasi, Z., Tang, X. W., Tauscher, L., Taylor, L., 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., Vetlitsky, I., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vogel, H., Vogt, H., Vorobiev, I., Vorobyov, A. A., Vorvolakos, A., Wadhwa, M., Wallraff, W., Wang, J. C., Wang, X. L., Wang, Z. M., Weber, A., Wilkens, H., S. X., Wu, Wynhoff, S., Xia, L., Z. Z., Xu, Yang, B. Z., Yang, C. G., Yang, H. J., Yang, M., J. B., Ye, Yeh, S. C., You, J. M., Zalite, A., Zalite, Y., Zemp, P., Zeng, Y., Zhang, Z. P., Zhu, G. Y., Zhu, R. Y., Zichichi, A., Ziegler, F., Zilizi, G., L3 (IHEF, IoP, FNWI)
Rok vydání: 1999
Předmět:
Zdroj: Physics Letters B
Physics Letters B, Elsevier, 1999, 453, pp.73-82. ⟨10.1016/S0370-2693(99)00279-8⟩
Scopus-Elsevier
Physics Letters B, 453, 73-82. Elsevier
ISSN: 1873-2445
0370-2693
DOI: 10.1016/S0370-2693(99)00279-8
Popis: Two-photon formation of the charmonium resonance $\chi_{{\rm c}2}$ has been studied with the L3 detector at LEP. The $\chi_{{\rm c}2}$ is identified through its decay $\chi_{{\rm c}2} \rightarrow \gamma {\rm J}$, with a subsequent decay ${\rm J} \rightarrow {\mathrm{e^+ e^-}}$ or ${\rm J} \rightarrow {\mathrm{\mu^+ \mu^-}}$. With an integrated luminosity of 140 pb$^{-1}$ at $\sqrt{s} \simeq$ 91~\textrm{Ge\kern -0.1em V} and 52 pb$^{-1}$ at $\sqrt{s} \simeq$ {Ge\kern -0.1em V}, we measure the two-photon width of the $\chi_{{\rm c}2}$ to be \begin{center} $\Gamma_{\gamma\gamma}(\chi_{{\rm c}2})=1.02 \pm 0.40 \mbox{$\;$(stat.)} \pm 0.15 \mbox{$\;$(sys.)} \pm 0.09(\rm{BR.}) {\mathrm{\ ke\kern -0.1em V}}$.
Databáze: OpenAIRE
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