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Improved limits on the lepton-flavor violating decays tau{-}-->l{-}l{+}l{-}.

  • Author(s): Aubert, B;
  • Bona, M;
  • Boutigny, D;
  • Karyotakis, Y;
  • Lees, JP;
  • Poireau, V;
  • Prudent, X;
  • Tisserand, V;
  • Zghiche, A;
  • Garra Tico, J;
  • Grauges, E;
  • Lopez, L;
  • Palano, A;
  • Pappagallo, M;
  • Eigen, G;
  • Stugu, B;
  • Sun, L;
  • Abrams, GS;
  • Battaglia, M;
  • Brown, DN;
  • Button-Shafer, J;
  • Cahn, RN;
  • Groysman, Y;
  • Jacobsen, RG;
  • Kadyk, JA;
  • Kerth, LT;
  • Kolomensky, Yu G;
  • Kukartsev, G;
  • Lopes Pegna, D;
  • Lynch, G;
  • Mir, LM;
  • Orimoto, TJ;
  • Osipenkov, IL;
  • Ronan, MT;
  • Tackmann, K;
  • Tanabe, T;
  • Wenzel, WA;
  • Del Amo Sanchez, P;
  • Hawkes, CM;
  • Watson, AT;
  • Koch, H;
  • Schroeder, T;
  • Walker, D;
  • Asgeirsson, DJ;
  • Cuhadar-Donszelmann, T;
  • Fulsom, BG;
  • Hearty, C;
  • Mattison, TS;
  • McKenna, JA;
  • Barrett, M;
  • Khan, A;
  • Saleem, M;
  • Teodorescu, L;
  • Blinov, VE;
  • Bukin, AD;
  • Druzhinin, VP;
  • Golubev, VB;
  • Onuchin, AP;
  • Serednyakov, SI;
  • Skovpen, Yu I;
  • Solodov, EP;
  • Todyshev, K Yu;
  • Bondioli, M;
  • Curry, S;
  • Eschrich, I;
  • Kirkby, D;
  • Lankford, AJ;
  • Lund, P;
  • Mandelkern, M;
  • Martin, EC;
  • Stoker, DP;
  • Abachi, S;
  • Buchanan, C;
  • Foulkes, SD;
  • Gary, JW;
  • Liu, F;
  • Long, O;
  • Shen, BC;
  • Vitug, GM;
  • Zhang, L;
  • Paar, HP;
  • Rahatlou, S;
  • Sharma, V;
  • Berryhill, JW;
  • Campagnari, C;
  • Cunha, A;
  • Dahmes, B;
  • Hong, TM;
  • Kovalskyi, D;
  • Richman, JD;
  • Beck, TW;
  • Eisner, AM;
  • Flacco, CJ;
  • Heusch, CA;
  • Kroseberg, J;
  • Lockman, WS;
  • Schalk, T;
  • Schumm, BA;
  • Seiden, A;
  • Wilson, MG;
  • Winstrom, LO;
  • Chen, E;
  • Cheng, CH;
  • Fang, F;
  • Hitlin, DG;
  • Narsky, I;
  • Piatenko, T;
  • Porter, FC;
  • Andreassen, R;
  • Mancinelli, G;
  • Meadows, BT;
  • Mishra, K;
  • Sokoloff, MD;
  • Blanc, F;
  • Bloom, PC;
  • Chen, S;
  • Ford, WT;
  • Hirschauer, JF;
  • Kreisel, A;
  • Nagel, M;
  • Nauenberg, U;
  • Olivas, A;
  • Smith, JG;
  • Ulmer, KA;
  • Wagner, SR;
  • Zhang, J;
  • Gabareen, AM;
  • Soffer, A;
  • Toki, WH;
  • Wilson, RJ;
  • Winklmeier, F;
  • Altenburg, DD;
  • Feltresi, E;
  • Hauke, A;
  • Jasper, H;
  • Merkel, J;
  • Petzold, A;
  • Spaan, B;
  • Wacker, K;
  • Klose, V;
  • Kobel, MJ;
  • Lacker, HM;
  • Mader, WF;
  • Nogowski, R;
  • Schubert, J;
  • Schubert, KR;
  • Schwierz, R;
  • Sundermann, JE;
  • Volk, A;
  • Bernard, D;
  • Bonneaud, GR;
  • Latour, E;
  • Lombardo, V;
  • Thiebaux, Ch;
  • Verderi, M;
  • Clark, PJ;
  • Gradl, W;
  • Muheim, F;
  • Playfer, S;
  • Robertson, AI;
  • Watson, JE;
  • Xie, Y;
  • Andreotti, M;
  • Bettoni, D;
  • Bozzi, C;
  • Calabrese, R;
  • Cecchi, A;
  • Cibinetto, G;
  • Franchini, P;
  • Luppi, E;
  • Negrini, M;
  • Petrella, A;
  • Piemontese, L;
  • Prencipe, E;
  • Santoro, V;
  • Anulli, F;
  • Baldini-Ferroli, R;
  • Calcaterra, A;
  • de Sangro, R;
  • Finocchiaro, G;
  • Pacetti, S;
  • Patteri, P;
  • Peruzzi, IM;
  • Piccolo, M;
  • Rama, M;
  • Zallo, A;
  • Buzzo, A;
  • Contri, R;
  • Lo Vetere, M;
  • Macri, MM;
  • Monge, MR;
  • Passaggio, S;
  • Patrignani, C;
  • Robutti, E;
  • Santroni, A;
  • Tosi, S;
  • Chaisanguanthum, KS;
  • Morii, M;
  • Wu, J;
  • Dubitzky, RS;
  • Marks, J;
  • Schenk, S;
  • Uwer, U;
  • Bard, DJ;
  • Dauncey, PD;
  • Flack, RL;
  • Nash, JA;
  • Panduro Vazquez, W;
  • Tibbetts, M;
  • Behera, PK;
  • Chai, X;
  • Charles, MJ;
  • Mallik, U;
  • Cochran, J;
  • Crawley, HB;
  • Dong, L;
  • Eyges, V;
  • Meyer, WT;
  • Prell, S;
  • Rosenberg, EI;
  • Rubin, AE;
  • Gao, YY;
  • Gritsan, AV;
  • Guo, ZJ;
  • Lae, CK;
  • Denig, AG;
  • Fritsch, M;
  • Schott, G;
  • Arnaud, N;
  • Béquilleux, J;
  • D'Orazio, A;
  • Davier, M;
  • Grosdidier, G;
  • Höcker, A;
  • Lepeltier, V;
  • Le Diberder, F;
  • Lutz, AM;
  • Pruvot, S;
  • Rodier, S;
  • Roudeau, P;
  • Schune, MH;
  • Serrano, J;
  • Sordini, V;
  • Stocchi, A;
  • Wang, WF;
  • Wormser, G;
  • Lange, DJ;
  • Wright, DM;
  • Bingham, I;
  • Burke, JP;
  • Chavez, CA;
  • Fry, JR;
  • Gabathuler, E;
  • Gamet, R;
  • Hutchcroft, DE;
  • Payne, DJ;
  • Schofield, KC;
  • Touramanis, C;
  • Bevan, AJ;
  • George, KA;
  • Di Lodovico, F;
  • Sacco, R;
  • Cowan, G;
  • Flaecher, HU;
  • Hopkins, DA;
  • Paramesvaran, S;
  • Salvatore, F;
  • Wren, AC;
  • Brown, DN;
  • Davis, CL;
  • Allison, J;
  • Bailey, D;
  • Barlow, NR;
  • Barlow, RJ;
  • Chia, YM;
  • Edgar, CL;
  • Lafferty, GD;
  • West, TJ;
  • Yi, JI;
  • Anderson, J;
  • Chen, C;
  • Jawahery, A;
  • Roberts, DA;
  • Simi, G;
  • Tuggle, JM;
  • Blaylock, G;
  • Dallapiccola, C;
  • Hertzbach, SS;
  • Li, X;
  • Moore, TB;
  • Salvati, E;
  • Saremi, S;
  • Cowan, R;
  • Dujmic, D;
  • Fisher, PH;
  • Koeneke, K;
  • Sciolla, G;
  • Spitznagel, M;
  • Taylor, F;
  • Yamamoto, RK;
  • Zhao, M;
  • Zheng, Y;
  • McLachlin, SE;
  • Patel, PM;
  • Robertson, SH;
  • Lazzaro, A;
  • Palombo, F;
  • Bauer, JM;
  • Cremaldi, L;
  • Eschenburg, V;
  • Godang, R;
  • Kroeger, R;
  • Sanders, DA;
  • Summers, DJ;
  • Zhao, HW;
  • Brunet, S;
  • Côté, D;
  • Simard, M;
  • Taras, P;
  • Viaud, FB;
  • Nicholson, H;
  • De Nardo, G;
  • Fabozzi, F;
  • Lista, L;
  • Monorchio, D;
  • Sciacca, C;
  • Baak, MA;
  • Raven, G;
  • Snoek, HL;
  • Jessop, CP;
  • Knoepfel, KJ;
  • Losecco, JM;
  • Benelli, G;
  • Corwin, LA;
  • Honscheid, K;
  • Kagan, H;
  • Kass, R;
  • Morris, JP;
  • Rahimi, AM;
  • Regensburger, JJ;
  • Sekula, SJ;
  • Wong, QK;
  • Blount, NL;
  • Brau, J;
  • Frey, R;
  • Igonkina, O;
  • Kolb, JA;
  • Lu, M;
  • Rahmat, R;
  • Sinev, NB;
  • Strom, D;
  • Strube, J;
  • Torrence, E;
  • Gagliardi, N;
  • Gaz, A;
  • Margoni, M;
  • Morandin, M;
  • Pompili, A;
  • Posocco, M;
  • Rotondo, M;
  • Simonetto, F;
  • Stroili, R;
  • Voci, C;
  • Ben-Haim, E;
  • Briand, H;
  • Calderini, G;
  • Chauveau, J;
  • David, P;
  • Del Buono, L;
  • de la Vaissière, Ch;
  • Hamon, O;
  • Leruste, Ph;
  • Malclès, J;
  • Ocariz, J;
  • Perez, A;
  • Prendki, J;
  • Gladney, L;
  • Biasini, M;
  • Covarelli, R;
  • Manoni, E;
  • Angelini, C;
  • Batignani, G;
  • Bettarini, S;
  • Carpinelli, M;
  • Cenci, R;
  • Cervelli, A;
  • Forti, F;
  • Giorgi, MA;
  • Lusiani, A;
  • Marchiori, G;
  • Mazur, MA;
  • Morganti, M;
  • Neri, N;
  • Paoloni, E;
  • Rizzo, G;
  • Walsh, JJ;
  • Biesiada, J;
  • Elmer, P;
  • Lau, YP;
  • Lu, C;
  • Olsen, J;
  • Smith, AJS;
  • Telnov, AV;
  • Baracchini, E;
  • Bellini, F;
  • Cavoto, G;
  • Del Re, D;
  • Di Marco, E;
  • Faccini, R;
  • Ferrarotto, F;
  • Ferroni, F;
  • Gaspero, M;
  • Jackson, PD;
  • Li Gioi, L;
  • Mazzoni, MA;
  • Morganti, S;
  • Piredda, G;
  • Polci, F;
  • Renga, F;
  • Voena, C;
  • Ebert, M;
  • Hartmann, T;
  • Schröder, H;
  • Waldi, R;
  • Adye, T;
  • Castelli, G;
  • Franek, B;
  • Olaiya, EO;
  • Roethel, W;
  • Wilson, FF;
  • Emery, S;
  • Escalier, M;
  • Gaidot, A;
  • Ganzhur, SF;
  • Hamel de Monchenault, G;
  • Kozanecki, W;
  • Vasseur, G;
  • Yèche, Ch;
  • Zito, M;
  • Chen, XR;
  • Liu, H;
  • Park, W;
  • Purohit, MV;
  • White, RM;
  • Wilson, JR;
  • Allen, MT;
  • Aston, D;
  • Bartoldus, R;
  • Bechtle, P;
  • Claus, R;
  • Coleman, JP;
  • Convery, MR;
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  • Dubois-Felsmann, GP;
  • Dunwoodie, W;
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  • Schwitters, RF;
  • Izen, JM;
  • Lou, XC;
  • Ye, S;
  • Bianchi, F;
  • Gallo, F;
  • Gamba, D;
  • Pelliccioni, M;
  • Bomben, M;
  • Bosisio, L;
  • Cartaro, C;
  • Cossutti, F;
  • Della Ricca, G;
  • Lanceri, L;
  • Vitale, L;
  • Azzolini, V;
  • Lopez-March, N;
  • Martinez-Vidal, F;
  • Milanes, DA;
  • Oyanguren, A;
  • Albert, J;
  • Banerjee, Sw;
  • Bhuyan, B;
  • Hamano, K;
  • Kowalewski, R;
  • Nugent, IM;
  • Roney, JM;
  • Sobie, RJ;
  • Harrison, PF;
  • Ilic, J;
  • Latham, TE;
  • Mohanty, GB;
  • Band, HR;
  • Chen, X;
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  • BABAR Collaboration
  • et al.
Abstract

A search for the neutrinoless, lepton-flavor violating decay of the tau lepton into three charged leptons has been performed using 376 fb{-1} of data collected at an e{+}e{-} center-of-mass energy around 10.58 GeV with the BABAR detector at the SLAC PEP-II storage rings. In all six decay modes considered, the numbers of events found in data are compatible with the background expectations. Upper limits on the branching fractions are set in the range (4-8)x10{-8} at 90% confidence level.

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