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Search for the reactions e+e-→μ+τ- and e+e-→e+τ-
- Aubert, B;
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- Su, D;
- Sullivan, MK;
- Suzuki, K;
- Swain, SK;
- Thompson, JM;
- Va’vra, J;
- van Bakel, N;
- Weaver, M;
- Weinstein, AJR;
- Wisniewski, WJ;
- Wittgen, M;
- Wright, DH;
- Yarritu, AK;
- Yi, K;
- Young, CC;
- Burchat, PR;
- Edwards, AJ;
- Majewski, SA;
- Petersen, BA;
- Roat, C;
- Wilden, L;
- Ahmed, S;
- Alam, MS;
- Bula, R;
- Ernst, JA;
- Jain, V;
- Pan, B;
- Saeed, MA;
- Wappler, FR;
- Zain, SB;
- Bugg, W;
- Krishnamurthy, M;
- Spanier, SM;
- Eckmann, R;
- Ritchie, JL;
- Satpathy, A;
- Schilling, CJ;
- Schwitters, RF;
- Izen, JM;
- Lou, XC;
- Ye, S;
- Bianchi, F;
- Gallo, F;
- Gamba, D;
- Bomben, M;
- Bosisio, L;
- Cartaro, C;
- Cossutti, F;
- Della Ricca, G;
- Dittongo, S;
- Lanceri, L;
- Vitale, L;
- Azzolini, V;
- Lopez-March, N;
- Martinez-Vidal, F;
- Banerjee, Sw;
- Bhuyan, B;
- Brown, CM;
- Fortin, D;
- Hamano, K;
- Kowalewski, R;
- Nugent, IM;
- Roney, JM;
- Sobie, RJ;
- Back, JJ;
- Harrison, PF;
- Latham, TE;
- Mohanty, GB;
- Pappagallo, M;
- Band, HR;
- Chen, X;
- Cheng, B;
- Dasu, S;
- Datta, M;
- Flood, KT;
- Hollar, JJ;
- Kutter, PE;
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- Neal, H
- et al.
Abstract
We report on a search for the lepton-flavor-violating processes e+e-→μ+τ- and e+e-→e+τ-. The data sample corresponds to an integrated luminosity of 211fb-1 recorded by the BABAR experiment at the SLAC PEP-II asymmetric-energy B Factory at a center-of-mass energy of s=10.58GeV. We find no evidence for a signal and set the 90% confidence level upper limits on the cross sections to be σμτ<3.8fb and σeτ<9.2fb. The ratio of the cross sections with respect to the dimuon cross section are measured to be σμτ/σμμ<3.4×10-6 and σeτ/σμμ<8.2×10-6. © 2007 The American Physical Society.
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