Measurement Of The Branching Fractions Of The Radiative Leptonic Tau Decays Tau -> E Gamma V(V)Over-Bar And Tau -> Mu Gamma V(V)Over-Bar At Babar
J. P. Lees,V. Poireau,V. Tisserand,E. Grauges,A. Palano,G. Eigen,B. Stugu,D. N. Brown,L. T. Kerth,Yu. G. Kolomensky,M. J. Lee,G. Lynch,H. Koch,T. Schroeder,C. Hearty,T. S. Mattison,J. A. Mckenna,R. Y. So,A. Khan,V. E. Blinov,A. R. Buzykaev,V. P. Druzhinin,V. B. Golubev,E. A. Kravchenko,A. P. Onuchin,S. I. Serednyakov,Yu. I. Skovpen,E. P. Solodov,K. Yu. Todyshev,A. J. Lankford,B. Dey,J. W. Gary,O. Long,M. Franco Sevilla,T. M. Hong,D. Kovalskyi,J. D. Richman,C. A. West,A. M. Eisner,W. S. Lockman,W. Panduro Vazquez,B. A. Schumm,A. Seiden,D. S. Chao,C. H. Cheng,B. Echenard,K. T. Flood,D. G. Hitlin,T. S. Miyashita,P. Ongmongkolkul,F. C. Porter,M. Rohrken,R. Andreassen,Z. Huard,B. T. Meadows,B. G. Pushpawela,M. D. Sokoloff,L. Sun,P. C. Bloom,W. T. Ford,A. Gaz,G. Smith,S. R. Wagner,R. Ayad,W. H. Toki,B. Spaan,D. Bernard,M. Verderi,S. Playfer,D. Bettoni,C. Bozzi,R. Calabrese,G. Cibinetto,E. Fioravanti,I. Garzia,E. Luppi,L. Piemontese,V. Santoro,A. Calcaterra,R. De Sangro,G. Finocchiaro,S. Martellotti,P. Patteri,I. M. Peruzzi,M. Piccolo,M. Rama,A. Zallo,R. Contri,M. R. Monge,S. Passaggio,C. Patrignani,B. Bhuyan,V. Prasad,A. Adametz,U. Uwer,H. M. Lacker,U. Mallik,C. Chen,J. Cochran,S. Prell,H. Ahmed,A. V. Gritsan,N. Arnaud,M. Davier,D. Derkach,G. Grosdidier,F. Le Diberder,A. M. Lutz,B. Malaescu,P. Roudeau,A. Stocchi,G. Wormser,D. J. Lange,D. M. Wright,J. P. Coleman,J. R. Fry,E. Gabathuler,D. E. Hutchcroft,D. J. Payne,C. Touramanis,A. J. Bevan,F. Di Lodovico,R. Sacco,G. Cowan,D. N. Brown,C. L. Davis,A. G. Denig,M. Fritsch,W. Gradl,K. Griessinger,A. Hafner,K. R. Schubert,R. J. Barlow,G. D. Lafferty,R. Cenci,B. Hamilton,A. Jawahery,D. A. Roberts,R. Cowan,R. Cheaib,P. M. Patel,S. H. Robertson,N. Neri,F. Palombo,L. Cremaldi,R. Godang,D. J. Summers,M. Simard,P. Taras,G. De Nardo,G. Onorato,C. Sciacca,G. Raven,C. P. Jessop,J. M. Losecco,K. Honscheid,R. Kass,M. Margoni,M. Morandin,M. Posocco,M. Rotondo,G. Simi,F. Simonetto,R. Stroili,S. Akar,E. Ben-Haim,M. Bomben,G. R. Bonneaud,H. Briand,G. Calderini,J. Chauveau,Ph. Leruste,G. Marchiori,J. Ocariz,M. Biasini,E. Manoni,A. Rossi,C. Angelini,G. Batignani,S. Bettarini,M. Carpinelli,G. Casarosa,M. Chrzaszcz,F. Forti,M. A. Giorgi,A. Lusiani,B. Oberhof,E. Paoloni,G. Rizzo,J. J. Walsh,D. Lopes Pegna,J. Olsen,A. J. S. Smith,F. Anulli,R. Faccini,F. Ferrarotto,F. Ferroni,M. Gaspero,A. Pilloni,G. Piredda,C. Bunger,S. Dittrich,O. Grunberg,M. Hess,T. Leddig,C. Voss,R. Waldi,T. Adye,E. O. Olaiya,F. F. Wilson,S. Emery,G. Vasseur,D. Aston,D. J. Bard,C. Cartaro,M. R. Convery,J. Dorfan,G. P. Dubois-Felsmann,W. Dunwoodie,M. Ebert,R. C. Field,B. G. Fulsom,M. T. Graham,C. Hast,W. R. Innes,P. Kim,D. W. G. S. Leith,D. Lindemann,S. Luitz,V. Luth,H. L. Lynch,D. B. Macfarlane,D. R. Muller,H. Neal,M. Perl,T. Pulliam,B. N. Ratcliff,A. Roodman,R. H. Schindler,A. Snyder,D. Su,M. K. Sullivan,J. Va'Vra,W. J. Wisniewski,H. W. Wulsin,M. V. Purohit,J. R. Wilson,A. Randle-Conde,S. J. Sekula,M. Bellis,P. R. Burchat,E. M. T. Puccio,M. S. Alam,J. A. Ernst,R. Gorodeisky,N. Guttman,D. R. Peimer,A. Soffer,S. M. Spanier,J. L. Ritchie,R. F. Schwitters,J. M. Izen,X. C. Lou,F. Bianchi,F. De Mori,A. Filippi,D. Gamba,L. Lanceri,L. Vitale,F. Martinez-Vidal,A. Oyanguren,P. Villanueva-Perez,J. Albert,Sw. Banerjee,A. Beaulieu,F. U. Bernlochner,H. H. F. Choi,G. J. King,R. Kowalewski,M. J. Lewczuk,T. Lueck,I. M. Nugent,J. M. Roney,R. J. Sobie,N. Tasneem,T. J. Gershon,P. F. Harrison,T. E. Latham,H. R. Band,S. Dasu,Y. Pan,R. Prepost,S. L. Wu
PHYSICAL REVIEW D（2015）
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摘要
We perform a measurement of the tau -> l gamma v (v) over bar (l = e, mu) branching fractions for a minimum photon energy of 10 MeV in the tau rest frame, using 431 fb(-1) of e(+) e(-) collisions collected at the center-of-mass energy of the Upsilon(4S) resonance with the BABAR detector at the PEP-II storage rings. We find B(tau -> mu gamma v (v) over bar = (3.69 +/- 0.03 +/- 0.10) x 10(-3) and B(tau -> e gamma v (v) over bar = (1.847 +/- 0.015 +/- 0.052) x 10(-2), where the first quoted error is statistical and the second is systematic. These results are substantially more precise than previous measurements.
