Measurement of the Spectral Function for the Τ−→k−ksντ Decay

J. P. Lees,V. Poireau,V. Tisserand,E. Grauges,A. Palano,G. Eigen,D. N. Brown,Yu. G. Kolomensky,M. Fritsch,H. Koch,T. Schroeder,C. Hearty,T. S. Mattison,J. A. McKenna,R. Y. So,V. E. Blinov,A. R. Buzykaev,V. P. Druzhinin,V. B. Golubev,E. A. Kozyrev,E. A. Kravchenko,A. P. Onuchin,S. I. Serednyakov,Yu. I. Skovpen,E. P. Solodov,K. Yu. Todyshev,A. J. Lankford,J. W. Gary,O. Long,A. M. Eisner,W. S. Lockman,W. Panduro Vazquez,D. S. Chao,C. H. Cheng,B. Echenard,K. T. Flood,D. G. Hitlin,J. Kim,Y. Li,T. S. Miyashita,P. Ongmongkolkul,F. C. Porter,M. Rohrken,Z. Huard,B. T. Meadows, B. G. Pushpawela,M. D. Sokoloff,L. Sun,J. G. Smith,S. R. Wagner,D. Bernard,M. Verderi,D. Bettoni,C. Bozzi,R. Calabrese,G. Cibinetto,E. Fioravanti,I. Garzia,E. Luppi,V. Santoro,A. Calcaterra,R. de Sangro,G. Finocchiaro,S. Martellotti,P. Patteri,I. M. Peruzzi,M. Piccolo,M. Rotondo,A. Zallo,S. Passaggio, C. Patrignani,H. M. Lacker,B. Bhuyan,U. Mallik,C. Chen,J. Cochran,S. Prell,A. V. Gritsan,N. Arnaud,M. Davier,F. Le Diberder,A. M. Lutz,G. Wormser,D. J. Lange,D. M. Wright,J. P. Coleman,E. Gabathuler,D. E. Hutchcroft,D. J. Payne,C. Touramanis,A. J. Bevan,F. Di Lodovico,R. Sacco,G. Cowan,Sw. Banerjee,C. L. Davis,A. G. Denig,W. Gradl,K. Griessinger,A. Hafner,K. R. Schubert,R. J. Barlow,G. D. Lafferty,R. Cenci,A. Jawahery,D. A. Roberts,R. Cowan,S. H. Robertson, R. M. Seddon,B. Dey,N. Neri,F. Palombo,R. Cheaib,L. Cremaldi,R. Godang,D. J. Summers,P. Taras,G. De Nardo,C. Sciacca,G. Raven,C. P. Jessop,J. M. LoSecco,K. Honscheid,R. Kass,A. Gaz,M. Margoni,M. Posocco,G. Simi,F. Simonetto,R. Stroili,S. Akar,E. Ben-Haim,M. Bomben,G. R. Bonneaud,G. Calderini,J. Chauveau,G. Marchiori,J. Ocariz,M. Biasini,E. Manoni,A. Rossi,G. Batignani,S. Bettarini,M. Carpinelli,G. Casarosa,M. Chrzaszcz,F. Forti,M. A. Giorgi,A. Lusiani,B. Oberhof,E. Paoloni,M. Rama,G. Rizzo,J. J. Walsh,L. Zani,A. J. S. Smith,F. Anulli,R. Faccini,F. Ferrarotto,F. Ferroni,A. Pilloni,G. Piredda, C. Buenger,S. Dittrich, O. Gruenberg,M. Hess,T. Leddig,C. Voss,R. Waldi,T. Adye,F. F. Wilson,S. Emery,G. Vasseur,D. Aston,C. Cartaro,M. R. Convery,J. Dorfan,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,S. Luitz,D. B. MacFarlane,D. R. Muller,H. Neal,B. N. Ratcliff,A. Roodman,M. K. Sullivan,J. Va'vra,W. J. Wisniewski,M. V. Purohit,J. R. Wilson,A. Randle-Conde, S. J. Sekula,H. Ahmed,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,J. Albert,A. Beaulieu,F. U. Bernlochner,G. J. King,R. Kowalewski,T. Lueck,I. M. Nugent,J. M. Roney,R. J. Sobie,N. Tasneem,T. J. Gershon,P. F. Harrison,T. E. Latham,R. Prepost,S. L. Wu

PHYSICAL REVIEW D（2018）

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摘要

The decay tau(-) -> K- K(S)v(tau) has been studied using 430 x 10(6) e(+) e(-) -> tau(+) tau(-) events produced at a center-of-mass energy around 10.6 GeV at the PEP-II collider and studied with the BABAR detector. The mass spectrum of the K- K-S system has been measured and the spectral function has been obtained. The measured branching fraction B(tau(-) -> K- K(S)v(tau)) = (0.739 +/- 0.011 (stat) +/- 0.020 (syst)) x 10(-3) is found to be in agreement with earlier measurements.

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