Measurements of branching fractions forB+→ρ+γ,B0→ρ0γ, andB0→ωγ

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

doi:10.1103/physrevd.78.112001

Abstract

We present branching fraction measurements for the radiative decays B+ -> rho+ gamma, B0 -> rho0 gamma, and B0 -> omega gamma. The analysis is based on a data sample of 465 million BBbar events collected with the BaBar detector at the PEP-II asymmetric B factory. We find BR(B+ -> rho+ gamma) = (1.20 +0.42 -0.37 +/-0.20) x 10^-6, BR(B0 -> rho0 gamma) = (0.97 +0.24 -0.22 +/-0.06) x 10^-6, and a 90% C.L. upper limit BR(B0 -> omega gamma) < 0.9 x 10^-6, where the first error is statistical and the second is systematic. We also measure the isospin-violating quantities Gamma(B+ -> rho+ gamma) / 2Gamma(B0 -> rho0 gamma) - 1 = -0.43 +0.25 -0.22 +/-0.10.

Full Text