Evidence for b → d γ transitions from a sum of exclusive final states in the hadronic final state mass range 1.0GeV/c2 < M(X d) < 1.8GeV/c2

B. Aubert,M. Bóna,D. Boutigny,Y. Karyotakis,J. P. Lees,V. Poireau,X. Prudent,V. Tisserand,A. Zghiche,J. Garra Tico,E. Graugés,L. Lopez,A. Palano,M. Pappagallo,G. Eigen,B. Stugu,Liang Sun,G. S. Abrams,M. Battaglia,D. N. Brown,J. Button‐Shafer,R. N. Cahn,Y. Groysman,R. G. Jacobsen,J. A. Kadyk,L. T. Kerth,Yu. G. Kolomensky,G. Kukartsev,D. Lopes Pegna,G. Lynch,L. M. Mir,T. J. Orimoto,I. Osipenkov,M. T. Ronan,K. Tackmann,T. Tanabe,W. A. Wenzel,P. del Amo Sanchez,C. M. Hawkes,A. T. Watson,H. Koch,T. Vazquez Schroeder,D. Walker,D. J. Asgeirsson,T. Çuhadar-Dönszelmann,B. G. Fulsom,C. Hearty,T. S. Mattison,J. A. McKenna,A. Khan,M. Saleem,L. Teodorescu,V. E. Blinov,A. D. Bukin,В. П. Дружинин,В. Б. Голубев,A. P. Onuchin,S. I. Serednyakov,Yu. I. Skovpen,E. P. Solodov,K. Yu. Todyshev,M. Bondioli,S. Curry,I. Eschrich,D. Kirkby,A. J. Lankford,P. Lund,M. Mandelkern,E. C. Martin,D. P. Stoker,S. Abachi,C. Buchanan,S. D. Foulkes,J. W. Gary,F. Liu,O. Long,B. C. Shen,G. M. Vitug, L. Zhang,H. P. Paar,S. 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Cecchi,G. Cibinetto,P. Franchini,E. Luppi,M. Negrini,A. Petrella,L. Piemontese,E. Prencipe,V. Santoro,F. Anulli,R. Baldini-Ferroli,A. Calcaterra,R. de Sangro,G. Finocchiaro,S. Pacetti,P. Patterí,I. M. Peruzzi,M. Piccolo,M. Rama,A. Zallo,A. Buzzo,R. Contri,M. Lo Vetere,M. Macrı́,M. R. Monge,S. Passaggio,C. Patrignani,E. Robutti,A. Santroni,S. Tosi,K. S. Chaisanguanthum,M. Morii,J. Wu,R. S. Dubitzky,J. Marks,S. Schenk,U. Uwer,D. J. Bard,P. Dauncey,R. L. Flack,J. Nash,W. Panduro Vazquez,M. J. Tibbetts, P. K. Behera,X. Chai,M. Charles,U. Mallik,J. Cochran,H. B. Crawley,L. Y. Dong,V. Eyges,W. T. Meyer,S. Prell,E. I. Rosenberg,A. E. Rubin,Y. Y. Gao,A. V. Gritsan,Z. J. Guo,C. K. Lae,A. Denig,M. Fritsch,G. Schott,N. Arnaud,J. B. Equilleux,A. D’Orazio,M. Davier,G. Grosdidier,A. Höcker,V. Lepeltier,F. Le Diberder,A. M. Lutz,S. Pruvot,S. Rodier,P. Roudeau,M. H. Schune,J. Serrano,V. Sordini,A. Stocchi,W. F. Wang,G. Wormser,D. Lange,D. Wright,I. Bingham,J. P. Burke,C. A. Chavez,J. R. Fry,E. 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Olaiya,W. Roethel,F. F. Wilson,S. Emery,M. Escalier,A. Gaidot,S. F. Ganzhur,G. Hamel de Monchenault,W. Kozanecki,G. Vasseur,Ch Yèche,M. Zito,X. R. Chen,H. Liu,W. Park,M. V. Purohit,R. M. White,J. R. Wilson,M. T. Allen,D. Aston,R. Bartoldus,P. Bechtle,R. Claus,J. P. Coleman,M. R. Convery,J. Dingfelder,J. Dorfan,G. P. Dubois-Felsmann,W. Dunwoodie,R. C. Field,T. Glanzman,S. J. Gowdy,M. T. Graham,P. Grenier,C. Hast,W. R. Innes,J. Kamiński,M. Kelsey,H. Kim,P. Kim,M. L. Kocian,D. W. G. S. Leith,S. Li,S. Luitz,V. Lüth,H. L. Lynch,D. B. MacFarlane,H. Marsiske,R. Messner,D. R. Muller,C. P. O’Grady,I. Ofte,A. Perazzo,М. Перл,T. Pulliam,B. N. Ratcliff,A. Roodman,A. A. Salnikov,R. H. Schindler,J. Schwiening,A. Snyder,D. Su,M. K. Sullivan,K. Suzuki,S. K. Swain,J. M. Thompson,J. Va’vra,A. P. Wagner,M. Weaver,W. J. Wisniewski,M. Wittgen,D. H. Wright,A. K. Yarritu,K. Yi,C. C. Young,V. Ziegler,P. R. Burchat,A. J. Edwards,S. A. Majewski,T. S. Miyashita,B. A. Petersen,L. Wilden,S. Ahmed,M. S. Alam,R. Bula,J. Ernst,V. Jain,B. Pan,M. A. Saeed,F. R. Wappler,S. B. Zain,M. Krishnamurthy,S. Spanier,B. J. Wogsland,R. Eckmann,J. L. Ritchie,A. M. Ruland,C. J. Schilling,R. F. Schwitters,J. M. Izen,X. Lou,S. Ye,F. Bianchi,F. Gallo,D. Gamba,M. Pelliccioni,M. Bomben,L. Bosisio,C. Cartaro,F. Cossutti,G. Della Ricca,L. Lanceri,L. Vitale,V. Azzolini,N. López-March,F. Martinez-Vida,D. A. Milanes,A. Oyanguren,J. Albert,S. Banerjee,B. Bhuyan,K. Hamano,R. Kowalewski,I. M. Nugent,J. M. Roney,R. Sobie,P. F. Harrison,J. Ilić,T. Latham,G. B. Mohanty,H. R. Band,X. Chen,S. Dasu,K. T. Flood,J. Hollar,P. E. Kutter,Y. Pan,M. Pierini,R. Prepost,S. L. Wu,H. Neal

arXiv (Cornell University)（2007）

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Author(s): Aubert, B; Bona, M; Boutigny, D; Karyotakis, Y; Lees, JP; Poireau, V; Prudent, X; Tisserand, V; Zghiche, A; Garra Tico, J; Grauges, E; Lopez, L; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Sun, L; Abrams, GS; Battaglia, M; Brown, DN; Button-Shafer, J; Cahn, RN; Groysman, Y; Jacobsen, RG; Kadyk, JA; Kerth, LT; Kolomensky, YG; Kukartsev, G; Lopes Pegna, D; Lynch, G; Mir, LM; Orimoto, TJ; Osipenkov, IL; Ronan, MT; Tackmann, K; Tanabe, T; Wenzel, WA; Del Amo Sanchez, P; Hawkes, CM; Watson, AT; Koch, H; Schroeder, T; Walker, D; Asgeirsson, DJ; Cuhadar-Donszelmann, T; Fulsom, BG; Hearty, C; Mattison, TS; McKenna, JA; Khan, A; Saleem, M; Teodorescu, L; Blinov, VE; Bukin, AD; Druzhinin, VP; Golubev, VB; Onuchin, AP; Serednyakov, SI; Skovpen, YI; Solodov, EP; Todyshev, KY; Bondioli, M; Curry, S; Eschrich, I; Kirkby, D; Lankford, AJ; Lund, P; Mandelkern, M; Martin, EC; Stoker, DP; Abachi, S; Buchanan, C; Foulkes, SD; Gary, JW; Liu, F; Long, O; Shen, BC; Vitug, GM; Zhang, L; Paar, HP; Rahatlou, S; Sharma, V; Berryhill, JW; Campagnari, C; Cunha, A | Abstract: We present preliminary results of a search for B → Xdγ decays with a hadronic mass 1.0 GeV/c2 l M(Xd) l 1.8 GeV/c2. We consider seven final states with up to four charged pions and one neutral pion or η, which correspond to about 50% of the total Xd fragmentation in this mass range. Based on a sample of 383 million B B events collected by the BaBar experiment at PEPII, we measure a partial branching fraction P7 Xd=1 B(B → Xdγ)|(1.0GeV/c2 l M(Xd) l 1.8GeV/c2) = (3.1±0.9+0.6 -0.5 ±0.5) · 10-6, where the uncertainties are statistical, systematic and model-dependent respectively.

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B meson,Branching fraction,Hadron,Physics,Stereochemistry,Particle physics

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