Lees, JP; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, DN; Kerth, LT; Kolomensky, Yu G; Lee, MJ; Lynch, G; Koch, H; Schroeder, T; Hearty, C; Mattison, TS; McKenna, JA; So, RY; Khan, A; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Golubev, VB; Kravchenko, EA; Onuchin, AP; Serednyakov, SI; Skovpen, Yu I; Solodov, EP; Todyshev, K Yu; Lankford, AJ; Dey, B; Gary, JW; Long, O; Sevilla, M Franco; Hong, TM; Kovalskyi, D; Richman, JD; West, CA; Eisner, AM; Lockman, WS; Vazquez, W Panduro; Schumm, BA; Seiden, A; Chao, DS; Cheng, CH; Echenard, B; Flood, KT; Hitlin, DG; Miyashita, TS; Ongmongkolkul, P; Porter, FC; Röhrken, M; Andreassen, R; Huard, Z; Meadows, BT; Pushpawela, BG; Sokoloff, MD; Sun, L; Bloom, PC; Ford, WT; Gaz, A; Smith, JG; Wagner, SR; Ayad, R; Toki, WH; Spaan, B; Bernard, D; Verderi, M; Playfer, S; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Piemontese, L; Santoro, V; Calcaterra, A; de Sangro, R; Finocchiaro, G; Martellotti, S; Patteri, P; Peruzzi, IM; Piccolo, M

doi:10.1103/physrevd.91.051103

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Measurement of the branching fractions of the radiative leptonic τ decays τ→eγνν¯ and τ→μγνν¯ at BABAR

2015

Lees, JP;
Poireau, V;
Tisserand, V;
Grauges, E;
Palano, A;
Eigen, G;
Stugu, B;
Brown, DN;
Kerth, LT;
Kolomensky, Yu G;
Lee, MJ;
Lynch, G;
Koch, H;
Schroeder, T;
Hearty, C;
Mattison, TS;
McKenna, JA;
So, RY;
Khan, A;
Blinov, VE;
Buzykaev, AR;
Druzhinin, VP;
Golubev, VB;
Kravchenko, EA;
Onuchin, AP;
Serednyakov, SI;
Skovpen, Yu I;
Solodov, EP;
Todyshev, K Yu;
Lankford, AJ;
Dey, B;
Gary, JW;
Long, O;
Sevilla, M Franco;
Hong, TM;
Kovalskyi, D;
Richman, JD;
West, CA;
Eisner, AM;
Lockman, WS;
Vazquez, W Panduro;
Schumm, BA;
Seiden, A;
Chao, DS;
Cheng, CH;
Echenard, B;
Flood, KT;
Hitlin, DG;
Miyashita, TS;
Ongmongkolkul, P;
Porter, FC;
Röhrken, M;
Andreassen, R;
Huard, Z;
Meadows, BT;
Pushpawela, BG;
Sokoloff, MD;
Sun, L;
Bloom, PC;
Ford, WT;
Gaz, A;
Smith, JG;
Wagner, SR;
Ayad, R;
Toki, WH;
Spaan, B;
Bernard, D;
Verderi, M;
Playfer, S;
Bettoni, D;
Bozzi, C;
Calabrese, R;
Cibinetto, G;
Fioravanti, E;
Garzia, I;
Luppi, E;
Piemontese, L;
Santoro, V;
Calcaterra, A;
de Sangro, R;
Finocchiaro, G;
Martellotti, S;
Patteri, P;
Peruzzi, IM;
Piccolo, M;
Rama, M;
Zallo, A;
Contri, R;
Monge, MR;
Passaggio, S;
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Prasad, V;
Adametz, A;
Uwer, U;
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Roudeau, P;
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Coleman, JP;
Fry, JR;
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Fritsch, M;
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Patel, PM;
Robertson, SH;
Neri, N;
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Simard, M;
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De Nardo, G;
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Margoni, M;
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Leruste, Ph;
Marchiori, G;
Ocariz, J;
Biasini, M;
Manoni, E;
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Bettarini, S;
Carpinelli, M;
Casarosa, G;
Chrzaszcz, M;
Forti, F;
Giorgi, MA;
Lusiani, A;
Oberhof, B;
Paoloni, E;
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Walsh, JJ;
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Smith, AJS;
Anulli, F;
Faccini, R;
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Piredda, G;
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Dittrich, S;
Grünberg, O;
Hess, M;
Leddig, T;
Voß, C;
Waldi, R;
Adye, T;
Olaiya, EO;
Wilson, FF;
Emery, S;
Vasseur, G;
Aston, D;
Bard, DJ;
Cartaro, C;
Convery, MR;
Dorfan, J;
Dubois-Felsmann, GP;
Dunwoodie, W;
Ebert, M;
Field, RC;
Fulsom, BG;
Graham, MT;
Hast, C;
Innes, WR;
Kim, P;
Leith, DWGS;
Lindemann, D;
Luitz, S;
Luth, V;
Lynch, HL;
MacFarlane, DB;
Muller, DR;
Neal, H;
Perl, M;
Pulliam, T;
Ratcliff, BN;
Roodman, A;
Schindler, RH;
Snyder, A;
Su, D;
Sullivan, MK;
Va’vra, J;
Wisniewski, WJ;
Wulsin, HW;
Purohit, MV;
Wilson, JR;
Randle-Conde, A;
Sekula, SJ;
Bellis, M;
Burchat, PR;
Puccio, EMT;
Alam, MS;
Ernst, JA;
Gorodeisky, R;
Guttman, N;
Peimer, DR;
Soffer, A;
Spanier, SM;
Ritchie, JL;
Schwitters, RF;
Izen, JM;
Lou, XC;
Bianchi, F;
De Mori, F;
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Beaulieu, A;
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Choi, HHF;
King, GJ;
Kowalewski, R;
Lewczuk, MJ;
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Roney, JM;
Sobie, RJ;
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Gershon, TJ;
Harrison, PF;
Latham, TE;
Band, HR;
Dasu, S;
Pan, Y;
Prepost, R;
Wu, SL
et al.

Published Web Location

https://doi.org/10.1103/physrevd.91.051103

Creative Commons 'BY' version 4.0 license

Abstract

We perform a measurement of the τ→lγνν¯ (l=e,μ) branching fractions for a minimum photon energy of 10 MeV in the τ rest frame, using 431fb-1 of e+e- collisions collected at the center-of-mass energy of the (4S) resonance with the BABAR detector at the PEP-II storage rings. We find B(τ→μγνν¯)=(3.69±0.03±0.10)×10-3 and B(τ→eγνν¯)=(1.847±0.015±0.052)×10-2, where the first quoted error is statistical and the second is systematic. These results are substantially more precise than previous measurements.

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Measurement of the branching fractions of the radiative leptonic τ decays τ→eγνν¯ and τ→μγνν¯ at BABAR

Published Web Location