201. Measurement of the weak dipole moments of the τ lepton
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M. Acciarri, O. Adriani, M. Aguilar-Benitez, S. Ahlen, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, M.G. Alviggi, G. Ambrosi, H. Anderhub, V.P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, L. Baksay, R.C. Ball, S. Banerjee, Sw. Banerjee, K. Banicz, A. Barczyk, R. Barillère, L. Barone, P. Bartalini, A. Baschirotto, M. Basile, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, J. Berdugo, P. Berges, B. Bertucci, B.L. Betev, S. Bhattacharya, M. Biasini, A. Biland, G.M. Bilei, J.J. Blaising, S.C. Blyth, G.J. Bobbink, R. Bock, A. Böhm, L. Boldizsar, B. Borgia, D. Bourilkov, M. Bourquin, D. Boutigny, S. Braccini, J.G. Branson, V. Brigljevic, I.C. Brock, A. Buffini, A. Buijs, J.D. Burger, W.J. Burger, J. Busenitz, X.D. Cai, M. Campanelli, M. Capell, G. Cara Romeo, G. Carlino, A.M. Cartacci, J. Casaus, G. Castellini, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, F. Cesaroni, M. Chamizo, Y.H. Chang, U.K. Chaturvedi, S.V. Chekanov, M. Chemarin, A. Chen, G. Chen, G.M. Chen, H.F. Chen, H.S. Chen, M. Chen, G. Chiefari, C.Y. Chien, L. Cifarelli, F. Cindolo, C. Civinini, I. Clare, R. Clare, H.O. Cohn, G. Coignet, A.P. Colijn, N. Colino, S. Costantini, F. Cotorobai, B. de la Cruz, A. Csilling, T.S. Dai, R. D'Alessandro, R. de Asmundis, A. Degré, K. Deiters, P. Denes, F. DeNotaristefani, D. DiBitonto, M. Diemoz, D. van Dierendonck, F. Di Lodovico, C. Dionisi, M. Dittmar, A. Dominguez, A. Doria, M.T. Dova, E. Drago, D. Duchesneau, P. Duinker, I. Duran, S. Dutta, S. Easo, Yu. Efremenko, H. El Mamouni, A. Engler, F.J. Eppling, F.C. Erné, J.P. Ernenwein, P. Extermann, M. Fabre, R. Faccini, S. Falciano, A. Favara, J. Fay, O. Fedin, M. Felcini, B. Fenyi, T. Ferguson, F. Ferroni, H. Fesefeldt, E. Fiandrini, J.H. Field, F. Filthaut, P.H. Fisher, I. Fisk, G. Forconi, L. Fredj, K. Freudenreich, C. Furetta, Yu. Galaktionov, S.N. Ganguli, P. Garcia-Abia, S.S. Gau, S. Gentile, J. Gerald, N. Gheordanescu, S. Giagu, S. Goldfarb, J. Goldstein, Z.F. Gong, A. Gougas, G. Gratta, M.W. Gruenewald, V.K. Gupta, A. Gurtu, L.J. Gutay, D. Haas, B. Hartmann, A. Hasan, D. Hatzifotiadou, T. Hebbeker, A. Hervé, J. Hirschfelder, W.C. van Hoek, H. Hofer, H. Hoorani, S.R. Hou, G. Hu, V. Innocente, K. Jenkes, B.N. Jin, L.W. Jones, P. de Jong, I. Josa-Mutuberria, A. Kasser, R.A. Khan, D. Kamrad, Yu. Kamyshkov, J.S. Kapustinsky, Y. Karyotakis, M. Kaur, M.N. Kienzle-Focacci, D. Kim, D.H. Kim, J.K. Kim, S.C. Kim, W.W. Kinnison, A. Kirkby, D. Kirkby, J. Kirkby, D. Kiss, W. Kittel, A. Klimentov, A.C. König, A. Kopp, I. Korolko, V. Koutsenko, R.W. Kraemer, W. Krenz, A. Kunin, P. Lacentre, P. Ladron de Guevara, G. Landi, C. Lapoint, K. Lassila-Perini, P. Laurikainen, A. Lavorato, M. Lebeau, A. Lebedev, P. Lebrun, P. Lecomte, P. Lecoq, P. Le Coultre, H.J. Lee, C. Leggett, J.M. Le Goff, R. Leiste, E. Leonardi, P. Levtchenko, C. Li, C.H. Lin, W.T. Lin, F.L. Linde, L. Lista, Z.A. Liu, W. Lohmann, E. Longo, W. Lu, Y.S. Lu, K. Lübelsmeyer, C. Luci, D. Luckey, L. Luminari, W. Lustermann, W.G. Ma, M. Maity, G. Majumder, L. Malgeri, A. Malinin, C. Maña, D. Mangeol, S. Mangla, P. Marchesini, A. Marin, J.P. Martin, F. Marzano, G.G.G. Massaro, D. McNally, S. Mele, L. Merola, M. Meschini, W.J. Metzger, M. von der Mey, Y. Mi, D. Migani, A. Mihul, A.J.W. van Mil, H. Milcent, G. Mirabelli, J. Mnich, P. Molnar, B. Monteleoni, R. Moore, T. Moulik, R. Mount, F. Muheim, A.J.M. Muijs, S. Nahn, M. Napolitano, F. Nessi-Tedaldi, H. Newman, T. Niessen, A. Nippe, A. Nisati, H. Nowak, Y.D. Oh, H. Opitz, G. Organtini, R. Ostonen, S. Palit, C. Palomares, D. Pandoulas, S. Paoletti, P. Paolucci, H.K. Park, I.H. Park, G. Pascale, G. Passaleva, S. Patricelli, T. Paul, M. Pauluzzi, C. Paus, F. Pauss, D. Peach, Y.J. Pei, S. Pensotti, D. Perret-Gallix, B. Petersen, S. Petrak, A. Pevsner, D. Piccolo, M. Pieri, P.A. Piroué, E. Pistolesi, V. Plyaskin, M. Pohl, V. Pojidaev, H. Postema, N. Produit, D. Prokofiev, J. Quartieri, G. Rahal-Callot, N. Raja, P.G. Rancoita, M. Rattaggi, G. Raven, P. Razis, K. Read, D. Ren, M. Rescigno, S. Reucroft, T. van Rhee, S. Riemann, K. Riles, O. Rind, A. Robohm, J. Rodin, B.P. Roe, L. Romero, S. Rosier-Lees, Ph. Rosselet, W. van Rossum, S. Roth, J.A. Rubio, D. Ruschmeier, H. Rykaczewski, J. Salicio, E. Sanchez, M.P. Sanders, M.E. Sarakinos, S. Sarkar, G. Sauvage, C. Schäfer, V. Schegelsky, S. Schmidt-Kaerst, D. Schmitz, M. Schneegans, N. Scholz, H. Schopper, D.J. Schotanus, J. Schwenke, G. Schwering, C. Sciacca, D. Sciarrino, L. Servoli, S. Shevchenko, N. Shivarov, V. Shoutko, J. Shukla, E. Shumilov, A. Shvorob, T. Siedenburg, D. Son, V. Soulimov, B. Smith, P. Spillantini, M. Steuer, D.P. Stickland, H. Stone, B. Stoyanov, A. Straessner, K. Sudhakar, G. Sultanov, L.Z. Sun, G.F. Susinno, H. Suter, J.D. Swain, X.W. Tang, L. Tauscher, L. Taylor, Samuel C.C. Ting, S.M. Ting, S.C. Tonwar, J. Tóth, C. Tully, H. Tuchscherer, K.L. Tung, Y. Uchida, J. Ulbricht, U. Uwer, E. Valente, G. Vesztergombi, I. Vetlitsky, G. Viertel, M. Vivargent, S. Vlachos, R. Völkert, H. Vogel, H. Vogt, I. Vorobiev, A.A. Vorobyov, A. Vorvolakos, M. Wadhwa, W. Wallraff, J.C. Wang, X.L. Wang, Z.M. Wang, A. Weber, S.X. Wu, S. Wynhoff, J. Xu, Z.Z. Xu, B.Z. Yang, C.G. Yang, X.Y. Yao, J.B. Ye, S.C. Yeh, J.M. You, An. Zalite, Yu. Zalite, P. Zemp, Y. Zeng, Z. Zhang, Z.P. Zhang, B. Zhou, Y. Zhou, G.Y. Zhu, R.Y. Zhu, A. Zichichi, F. Ziegler, L3 (IHEF, IoP, FNWI), IHEF (IoP, FNWI), 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., Adriani, O., Aguilar Benitez, M., Ahlen, S., 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., Ball, R. C., Banerjee, S., Banicz, K., Barczyk, A., Barillere, R., Barone, L., Bartalini, P., Baschirotto, A., 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., Bilei, G. M., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bock, R., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Boutigny, D., Braccini, S., Branson, J. G., Brigljevic, V., Brock, I. C., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Busenitz, J., 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., Chekanov, S. V., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chen, M., Chiefari, Giovanni, Chien, C. Y., Cifarelli, L., Cindolo, F., Civinini, C., Clare, I., Clare, R., Cohn, H. O., Coignet, G., Colijn, A. P., Colino, N., Costantini, S., Cotorobai, F., B. d., La, Csilling, A., Dai, T. S., D'Alessandro, R., Asmundis, R. d., Degre, A., Deiters, K., Denes, P., Denotaristefani, F., Dibitonto, D., Diemoz, M., Dierendonck, D. v., Lodovico, F. D., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Drago, E., Duchesneau, D., Duinker, P., Duran, I., Dutta, S., Easo, S., Efremenko, Y., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Ernenwein, J. P., Extermann, P., Fabre, M., Faccini, R., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Fenyi, B., 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., Gau, S. S., Gentile, S., Gerald, J., Gheordanescu, N., Giagu, S., Goldfarb, S., Goldstein, J., Gong, Z. F., Gougas, A., Gratta, G., Gruenewald, M. W., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hartmann, B., Hasan, A., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hirschfelder, J., Van, W. C., Hofer, H., Hoorani, H., Hou, S. R., Hu, G., Innocente, V., Jenkes, K., Jin, B. N., Jones, L. W., Jong, P. d., Josa Mutuberria, I., Kasser, A., Khan, R. A., Kamrad, D., Kamyshkov, Y., Kapustinsky, J. S., Karyotakis, Y., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, D. H., Kim, J. K., Kim, S. C., Kinnison, W. W., Kirkby, A., Kirkby, D., 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, 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., Leggett, C., 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., Lu, W., 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., Mangla, S., Marchesini, P., Marin, A., Martin, J. P., Marzano, F., G. G. G., Mcnally, D., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mi, Y., Migani, D., Mihul, A., A. J. W., Milcent, H., Mirabelli, G., Mnich, J., Molnar, P., Monteleoni, B., Moore, R., Moulik, T., Mount, R., Muheim, F., Niessen, T., Nippe, A., Nisati, A., Nowak, H., Y. D., Oh, Opitz, H., Organtini, G., Ostonen, R., Palit, S., 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., Pei, Y. J., Pensotti, S., Perret Gallix, D., Petersen, B., Petrak, S., Pevsner, A., Picolo, D., Pieri, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Produit, N., Prokofiev, D., Quartieri, J., Rahal Callot, G., Raja, N., Rancoita, P. G., Rattaggi, M., Raven, G., Razis, P., Read, K., Ren, D., Rescigno, M., Reucroft, S., Rhee, T. v., Riemann, S., Riles, K., Rind, O., Robohm, A., Rodin, J., Roe, B. P., Romero, L., Rosier Lees, S., Rosselet, P., Rossum, W. v., Roth, S., Rubio, J. A., Ruschmeier, D., Rykaczewski, H., Salicio, J., Sanchez, E., Sanders, M. P., Sarakinos, M. E., Sarkar, S., Sauvage, G., Schafer, C., Schneegans, M., Scholz, N., Schegelsky, V., Schmidt Kaerst, S., Schmitz, D., 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., Soulimov, V., Smith, B., Spillantini, P., Steuer, M., Stickland, D. P., Stone, H., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Susinno, G. F., Suter, H., Swain, J. D., Tang, X. W., Tauscher, L., Taylor, L., S. C. C., Ting, S. M., Tonwar, S. C., Toth, J., Tully, C., Tuchscherer, H., Tung, K. L., Uchida, Y., Ulbricht, J., Uwer, U., Valente, E., Vesztergombi, G., Vetlitsky, I., Viertel, G., Vivargent, M., Vlachos, S., Volkert, R., 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., S. X., Wu, Wynhoff, S., Xu, J., Z. Z., Xu, Yang, B. Z., Yang, C. G., Yao, X. Y., J. B., Ye, Yeh, S. C., You, J. M., Zalite, A., Zalite, Y., Zemp, P., Zeng, Y., Zhang, Z., Zhang, Z. P., Zhou, B., Zhou, Y., Zhu, G. Y., Zhu, R. Y., Zichichi, A., and Ziegler, F.
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Nuclear and High Energy Physics ,Particle physics ,POLARIZATION ,SLC ,Electron–positron annihilation ,01 natural sciences ,DECAYS ,Nuclear physics ,0103 physical sciences ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,010306 general physics ,Ciencias Exactas ,Physics ,Z mass ,CONSTRUCTION ,Anomalous magnetic dipole moment ,010308 nuclear & particles physics ,L3 experiment ,Física ,Dipole ,Electric dipole moment ,τ lepton ,anomalous magnetic dipole ,High Energy Physics::Experiment ,CP VIOLATION ,Particle Physics - Experiment ,Bar (unit) ,Lepton - Abstract
Using the data collected by the L3 experiment at LEP from 1991 to 1995 at energies around the Z mass, a measurement of the weak anomalous magnetic dipole moment, awτ, and of the weak electric dipole moment, dwτ, of the τ lepton is performed. These quantities are obtained from angular distributions in e+e−→τ+τ−→h+ν̄τh−ντ, where h is a π or a p. The results are: Re(awτ)=(0.0±1.6±2.3)×10−3, Im(awτ)=(−1.0±3.6±4.3)×10−3 and Re(dwτ)=(−0.44±0.88±1.33)×10−17e·cm. This is the first direct measurement of awτ., Facultad de Ciencias Exactas