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Determination of $\alpha_s$ from Hadronic Event Shapes in $e^+ e^-$ Annihilation at $192 \le \sqrt{s} \le 208$ GeV

Results are presented from a study of the structure of high energy hadronic events recorded by the L3 detector at sqrt(s)>192 GeV. The distributions of several event shape variables are compared to resummed O(alphaS^2) QCD calculations. We determine the strong coupling constant at three average c...

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Detalles Bibliográficos
Autores principales: Achard, P., Adriani, O., Aguilar-Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M.G., Anderhub, H., Andreev, Valery P., Anselmo, F., Arefev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, G., Baksay, L., Baldew, S.V., Banerjee, S., Banerjee, Sw., 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., Biasini, M., Biglietti, M., Biland, A., Blaising, J.J., Blyth, S.C., Bobbink, G.J., Bohm, A., Boldizsar, L., Borgia, B., Bottai, S., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J.G., Brochu, F., Burger, J.D., Burger, W.J., Cai, X.D., Capell, M., Cara Romeo, G., Carlino, G., Cartacci, A., Casaus, J., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Chamizo, M., Chang, Y.H., Chemarin, M., Chen, A., Chen, G., Chen, G.M., Chen, H.F., Chen, H.S., Chiefari, G., Cifarelli, L., Cindolo, F., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., de la Cruz, B., Cucciarelli, S., van Dalen, J.A., de Asmundis, R., Deglon, P., Debreczeni, J., Degre, A., Deiters, K., Della Volpe, D., Delmeire, E., Denes, P., De Notaristefani, F., De Salvo, A., Diemoz, M., Dierckxsens, M., Dionisi, C., Dittmar, M., Doria, A., Dova, M.T., Duchesneau, D., Echenard, B., Eline, A., El Mamouni, H., Engler, A., Eppling, F.J., Ewers, A., Extermann, P., 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., Fisher, W., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Iouri, Ganguli, S.N., Garcia-Abia, Pablo, Gataullin, M., Gentile, S., Giagu, S., Gong, Z.F., Grenier, Gerald Jean, Grimm, O., Gruenewald, M.W., Guida, M., van Gulik, R., Gupta, V.K., Gurtu, A., Gutay, L.J., Haas, D., Hakobian, R.Sh., Hatzifotiadou, D., Hebbeker, T., Herve, Alain, Hirschfelder, J., Hofer, H., Hohlmann, M., Holzner, G., Hou, S.R., Hu, Y., Jin, B.N., Jones, Lawrence W., de Jong, P., Josa-Mutuberria, I., Kafer, D., Kaur, M., Kienzle-Focacci, M.N., Kim, J.K., Kirkby, Jasper, Kittel, W., Klimentov, A., Konig, A.C., Kopal, M., Koutsenko, V., Kraber, M., Kraemer, R.W., Krenz, W., Kruger, 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.M., Leiste, R., Levtchenko, M., Levchenko, P., Li, C., Likhoded, S., Lin, C.H., Lin, W.T., Linde, F.L., Lista, L., Liu, Z.A., Lohmann, W., Longo, E., Lu, Y.S., Lubelsmeyer, K., Luci, C., Luminari, L., Lustermann, W., Ma, W.G., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Martin, J.P., Marzano, F., Mazumdar, K., McNeil, R.R., Mele, S., Merola, L., Meschini, M., Metzger, W.J., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G.B., Muanza, G.S., Muijs, A.J.M., Musicar, B., Musy, M., Nagy, S., Natale, S., Napolitano, M., Nessi-Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Kluge, Hannelies, Ofierzynski, R., Organtini, G., Palomares, C., Pandoulas, D., Paolucci, P., Paramatti, R., Passaleva, G., Patricelli, S., Paul, Thomas Cantzon, Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret-Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pioppi, M., Piroue, P.A., Pistolesi, E., Plyaskin, V., Pohl, M., Pozhidaev, V., Pothier, J., Prokofev, D.O., Prokofev, D., Quartieri, J., Rahal-Callot, G., Rahaman, M.A., Raics, P., Raja, N., Ramelli, R., Rancoita, P.G., Ranieri, R., Raspereza, A., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, Keith, Roe, B.P., Romero, L., Rosca, A., Rosier-Lees, S., Roth, Stefan, Rosenbleck, C., Roux, B., Rubio, J.A., Ruggiero, G., Rykaczewski, H., Sakharov, A., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M.P., Schafer, C., Shchegelsky, V., Schmidt-Kaerst, S., Schmitz, D., Schopper, H., Schotanus, D.J., Schwering, G., Sciacca, C., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Spillantini, P., Steuer, M., Stickland, D.P., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L.Z., Sushkov, S., Suter, H., Swain, J.D., Szillasi, Z., Tang, X.W., Tarjan, P., Tauscher, L., Taylor, L., Tellili, B., Teyssier, D., Timmermans, Charles, Ting, S.C.C., Ting, S.M., Tonwar, S.C., Toth, J., Tully, C., Tung, K.L., Ulbricht, J., Valente, E., Van de Walle, R.T., Veszpremi, V., Vesztergombi, G., Vetlitsky, I., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vodopyanov, I., Vogel, H., Vogt, H., Vorobev, I., Vorobov, A.A., Wadhwa, M., Wallraff, W., Wang, X.L., Wang, Z.M., Weber, M., Wienemann, P., Wilkens, H., Wynhoff, S., Xia, L., Xu, Z.Z., Yamamoto, J., Yang, B.Z., Yang, C.G., Yang, H.J., Yang, M., Yeh, S.C., Zalite, A., Zalite, Yu., Zhang, Z.P., Zhao, J., Zhu, G.Y., Zhu, R.Y., Zhuang, H.L., Zichichi, A., Zilizi, G., Zimmermann, B., Zoller, M.
Lenguaje:eng
Publicado: 2002
Materias:
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(02)01814-2
http://cds.cern.ch/record/542196
Descripción
Sumario:Results are presented from a study of the structure of high energy hadronic events recorded by the L3 detector at sqrt(s)>192 GeV. The distributions of several event shape variables are compared to resummed O(alphaS^2) QCD calculations. We determine the strong coupling constant at three average centre-of-mass energies: 194.4, 200.2 and 206.2 GeV. These measurements, combined with previous L3 measurements at lower energies demonstrate the running of alphaS as expected in QCD and yield alphaS(mZ) = 0.1227 +- 0.0012 +- 0.0058, where the first uncertainty is experimental and the second is theoretical.