Measurement of theB0→π−l+νForm-Factor Shape and Branching Fraction, and Determination of|Vub|with a Loose Neutrino Reconstruction Technique

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

doi:10.1103/physrevlett.98.091801

Abstract

We report the results of a study of the exclusive charmless semileptonic decay, B0-->pi(-l)(+nu), undertaken with approximately 227 x 10(6) BB pairs collected at the Upsilon(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with an innovative loose neutrino reconstruction technique. We obtain partial branching fractions in 12 bins of q2, the momentum transfer squared, from which we extract the f + (q2) form-factor shape and the total branching fraction B(B0-->pi(-l)(+nu))=(1.46+/-0.07stat+/-0.08syst) x 10(-4). Based on a recent unquenched lattice QCD calculation of the form factor in the range q2>16 GeV2, we find the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element /Vub/ to be (4.1+/-0.2stat +/- 0.2syst(+0.6)-0.4_{FF}) x 10(-3), where the last uncertainty is due to the normalization of the form factor.

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