Measurement of theτ−→K−π0ντbranching fraction

B Aubert,L Vitale,D J Asgeirsson,D Aston,T J West,R Godang,A Palano,E Salvati,M Rotondo,J D Richman,S Saremi,V Poireau,R Gamet,D J Payne,D G Hitlin,S E Mclachlin,D Lopes Pegna,G P Dubois-Felsmann,T S Mattison,R Sacco,C Patrignani,M Rama,M Pelizaeus,F Salvatore,W T Meyer,F Le Diberder,A K Yarritu,F Renga,P Taras,A I Robertson,R De Sangro,M Battaglia,H Kagan,L Bosisio,M Carpinelli,J L Ritchie,R Rahmat,D A Sanders,J Schwiening,E O Olaiya,G Blaylock,L Sun,D Côté,W Park,J Merkel,Z J Guo,E Paoloni,A Cecchi,S Ahmed,J Béquilleux,A Gaidot,H M Lacker,G Raven,M Haire,I Ofte,D B Macfarlane,M D Sokoloff,J M Roney,W Dunwoodie,F Fang,J Albert,H P Paar,M Davier,H B Crawley,F Forti,D J Bard,R N Cahn,H U Flaecher,Yu G Kolomensky,V B Golubev,D Boutigny,C Hearty,V Eyges,J P Lees,R Claus,A Höcker,M Verderi,R Contri,W Roethel,S Playfer,M Wittgen,I Narsky,A Jawahery,R Cowan,D J Lange,J M Bauer,P R Burchat,W R Innes,K S Chaisanguanthum,F C Porter,K R Schubert,D Walker,L A Corwin,F Gallo,G R Bonneaud,N R Barlow,W Gradl,P M Patel,F Liu,D Bettoni,S Morganti,A Lusiani,G Grosdidier,W Kozanecki,P J Clark,M A Mazur,L Li Gioi,K Wacker,R Schwierz,G Marchiori,S Brunet,Y M Chia,R J Wilson,R Bula,A Stocchi,S Ricciardi,B Stugu,U Mallik,C J Schilling,S Pacetti,T Held,B Spaan,C Cartaro,J G Smith,A Cunha,G Cavoto,J I Yi,H R Band,E Baracchini,K A George,G Kukartsev,H Nicholson,G B Mohanty,K Honscheid,J M Tuggle,L T Kerth,R Bartoldus,A D Bukin,O Hamon,T B Moore,N B Sinev,F Muheim,D Su,J Biesiada,A Buzzo,G S Abrams,T Schalk,S Emery,F Simonetto,P Lund,R Cenci,A Kreisel,W J Wisniewski,A Petzold,F Ferrarotto,E Latour,W H Toki,V Tisserand,E Torrence,A P Onuchin,E I Rosenberg,C Lu,J Chauveau,A Perazzo,R Kowalewski,S S Hertzbach,M Spitznagel,G D Lafferty,J R Fry,V Klose,J Dorfan,G Finocchiaro,C Hast,S F Ganzhur,C Dallapiccola,K C Schofield,G Castelli,C H Cheng,R Frey,M A Mazzoni,R H Schindler,F Bianchi,M Krishnamurthy,S Passaggio,J W Gary,C C Young,F Bellini,S Rodier,A J Lankford,R Nogowski,H L Lynch,S Schenk,T Glanzman,M S Alam,D Gamba,J A Mckenna,H Jasper,J Anderson,M V Purohit,T M Hong,S J Gowdy,V Santoro,D D Altenburg,S Prell,S Bettarini,B C Shen,A Snyder,U Uwer,M Fritsch,M G Wilson,M Piccolo,G De Nardo,M R Convery,A Lazzaro,L Lanceri,E P Solodov,Y P Lau,M L Kocian,T W Beck,F R Wappler,I Eschrich,H Schröder,A M Eisner,S Curry,M Mandelkern,M Weaver,A Oyanguren,G Schott,S Abachi,J Ocariz,R S Dubitzky,U Nauenberg,J Schubert,J A Kadyk,A E Rubin,T Piatenko,V Ziegler,J Marks,L Lopez,S H Robertson,C Bozzi,C A Chavez,W S Lockman,E Gabathuler,F Anulli,T Hartmann,R Stroili,S I Serednyakov,V Lepeltier,W T Ford,X Chai,A Hauke,D Monorchio,A V Telnov,F F Wilson,K A Ulmer,R Messner,R Faccini,J Serrano,A M Rahimi,F Blanc,M Morganti,N L Blount,G Della Ricca,V E Blinov,L Del Buono,R Baldini-Ferroli,B G Fulsom,P Franchini,R Calabrese,Q K Wong,B Franek,I Bingham,R G Jacobsen,E Prencipe,G Eigen,S J Sekula,R K Yamamoto,L Piemontese,D Kirkby,F Polci,G Lynch,A M Gabareen,R Kroeger,G Batignani,R Eckmann,S D Foulkes,M Morii,E Di Marco,P Roudeau,H W Zhao,R J Barlow,C L Edgar,R L Flack,E Ben-Haim,V Eschenburg,X Prudent,A Petrella,G Mancinelli,M Pappagallo,X R Chen,G Wormser,N Arnaud,H L Snoek,P H Fisher,M Ebert,A Seiden,R Andreassen,J Prendki,J Va’Vra,M Andreotti,J Kroseberg,J J Regensburger,P Del Amo Sanchez,L M Mir,N Van Bakel,B Pan,E Chen,I M Peruzzi,E Feltresi,B Bhuyan,C Voena,N Gagliardi,M K Sullivan,C M Hawkes,C Touramanis,C L Davis,P E Kutter,M A Saeed,A Santroni,W Menges,T Pulliam,M Lu,K Suzuki,M Gaspero,S Luitz,M Simard,P C Bloom,G Rizzo,M T Ronan,K T Flood,C A Heusch,C Voci,S Pruvot,R F Schwitters,C K Lae,D J Summers,D A Roberts,A Volk,F B Viaud,J M Losecco,I J Forster,D Del Re,A Olivas,K J Knoepfel,J Stelzer,A C Wren,D P Stoker,M T Allen,J P Coleman,D W G S Leith,A M Ruland,M H Schune,I M Nugent,M Zito,H Briand,E C Martin,G Piredda,H Marsiske,G Cibinetto,F Di Lodovico,G Calderini,D A Hopkins,G Vasseur,A M Lutz,M Lo Vetere,F Ferroni,A T Watson,M A Baak,J E Sundermann,F Palombo,S L Wu,L Gladney,C J Flacco,M Posocco,Y Karyotakis,Y Groysman,R Prepost,A Roodman,L Wilden,A Calcaterra,A Zallo,M Bondioli,S B Zain,A J S Smith,K Yi,J Walsh ,C Angelini,M Charles ,Yu I Skovpen,V Sharma,J Strube,J Button‐Shafer ,L Cremaldi,I Osipenkov ,B Ratcliff ,M G Zhao ,M Pierini,H Koch,P Dauncey ,J Kamiński ,S R Wagner,J Brau,A Pompili,D R Muller,K Yu Todyshev ,Ph Leruste ,P Bechtle,P Grenier,S Dasu,K Mishra,D N Brown,M R Monge,Ch Thiebaux ,Y Y Gao,T Orimoto ,N Neri,A Dʼorazio ,C Buchanan,D Dujmić ,M Escalier,C Campagnari,S Paramesvaran,M Margoni,D Bernard,X Chen,D H Wright,A Khan,J Olsen,R C Field,C P O’Grady,A Pérez ,F Winklmeier,L Lista,N López-March ,J Hollar ,Karsten Koeneke ,P Elmer,D Kovalskyi,M Nagel,G Hamel De Monchenault,Y Xie,A Zghiche,T Çuhadar-Dönszelmann ,R Covarelli,T Hryn’Ova,M A Giorgi,C Sciacca,H Liu,B Meadows ,М Перл ,D Wright ,J Malclès,A Soffer,V Lombardo,M T Graham,F Martínez-Vidal ,J M Thompson,S Majewski ,G Benelli,G Cowan,T Vazquez Schroeder ,L Winstrom ,D Hutchcroft ,S Tosi,F Fabozzi,A J Edwards,B A Petersen,S Rahatlou,M Kelsey ,V Azzolini,J Nash ,P Kim,P F Harrison,A Gaz,J Ilić ,Y B Pan ,J M Izen,M Bomben,M J Tibbetts ,P Jackson ,G Simi,M Saleem,J Cochran,Dong Liu ,B A Schumm,J P Morris,T Adye,V Sordini,M Steinke,P David,F Cossutti,H Kim,J E Watson,J Wu,Ch De La Vaissière ,M Biasini,M Pelliccioni,A P Wagner,J Dingfelder ,D A Milanés ,E Graugés ,O Igonkina,A Cervelli,S Li,Y Zheng,M Bóna ,Ch Yèche ,M Macrı́ ,X Li,K Hamano,V Jain,G Sciolla,A J Bevan,S Ye,A Denig ,P Patterí ,R Sobie ,S Spanier ,J W Berryhill,N Berger,J Allison,T Latham ,M Kobel ,P K Behera,E Manoni,D Strom,W F Wang,J Ernst ,K Tackmann,J Zhang,R Waldi,M Negrini,F Taylor,T Tanabe,M Morandin,L Teodorescu,J Kolb ,V Lüth ,C Jessop ,J F Hirschauer,B Dahmes,W A Wenzel,S Chen,S Banerjee ,A Salnikov ,В П Дружинин ,O R Long ,J G Panduro Vazquez ,W F Mader,E Luppi,X Lou ,J Garra Ticó ,J R Wilson,R Kass,E Robutti,L Zhang,S K Swain,C Chen,A V Gritsan,H A Neal

doi:10.1103/physrevd.76.051104

Abstract

A measurement of the tau- --> K- pi0 nu_tau branching fraction has been made using 230.2 fb-1 of data recorded by the BABAR detector at the PEP-II e+ e- collider, located at the Stanford Linear Accelerator Center (SLAC), at a center of mass energy sqrt{s} close to 10.58 GeV. We measure BF(tau- --> K- pi0 nu_tau) = (0.416 +/- 0.003 (stat) +/- 0.018 (syst)) %.

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