Search for the decay B-0 -> gamma gamma

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doi:10.1103/PhysRevD.83.032006

We report the result of a search for the rare decay B-0 -> gamma gamma in 426 fb(-1) of data, corresponding to 226 x 10(6) B-0(B) over bar (0) pairs, collected on the Y(4S) resonance at the PEP-II asymmetric-energy e(+)e(-) collider using the BABAR detector. We use a maximum likelihood fit to extract the signal yield and observe 21(-12)(+13) signal events with a statistical significance of 1.8 sigma. This corresponds to a branching fraction B(B-0 -> gamma gamma) = (1.7 +/- 1.1(stat.) +/- 0.2(syst.)) x 10(-7). Based on this result, we set a 90% confidence level upper limit of B(B-0 -> gamma gamma) < 3.2 x 10(-7).

Titolo:	Search for the decay B-0 -> gamma gamma
Autori:	Sanchez PD Lees JP Poireau V Prencipe E Tisserand V Tico JG Grauges E Martinelli M Palano A Pappagallo M Eigen G Stugu B Sun L Battaglia M Brown DN Hooberman B Kerth LT Kolomensky YG Lynch G Osipenkov IL Tanabe T Hawkes CM Watson AT Koch H Schroeder T Asgeirsson DJ Hearty C Mattison TS McKenna JA Khan A Randle-Conde A Blinov VE Buzykaev AR Druzhinin VP Golubev VB Onuchin AP Serednyakov SI Skovpen YI Solodov EP Todyshev KY Yushkov AN Bondioli M Curry S Kirkby D Lankford AJ Mandelkern M Martin EC Stoker DP Atmacan H Gary JW Liu F Long O Vitug GM Campagnari C Hong TM Kovalskyi D Richman JD West C Eisner AM Heusch CA Kroseberg J Lockman WS Martinez AJ Schalk T Schumm BA Seiden A Winstrom LO Cheng CH Doll DA Echenard B Hitlin DG Ongmongkolkul P Porter FC Rakitin AY Andreassen R Dubrovin MS Mancinelli G Meadows BT Sokoloff MD Bloom PC Ford WT Gaz A Nagel M Nauenberg U Smith JG Wagner SR Ayad R Toki WH Jasper H Karbach TM Merkel J Petzold A Spaan B Wacker K Kobel MJ Schubert KR Schwierz R Bernard D Verderi M Clark PJ Playfer S Watson JE Andreotti M Bettoni D Bozzi C Calabrese R Cecchi A Cibinetto G Fioravanti E Franchini P Luppi E Munerato M Negrini M Petrella A Piemontese L Baldini-Ferroli R Calcaterra A de Sangro R Finocchiaro G Nicolaci M Pacetti S Patteri P Peruzzi IM Piccolo M Rama M Zallo A Contri R Guido E Lo Vetere M Monge MR Passaggio S Patrignani C Robutti E Tosi S Bhuyan B Prasad V Lee CL Morii M Adametz A Marks J Uwer U Bernlochner FU Ebert M Lacker HM Lueck T Volk A Dauncey PD Tibbetts M Behera PK Mallik U Chen C Cochran J Crawley HB Dong L Meyer WT Prell S Rosenberg EI Rubin AE Gritsan AV Guo ZJ Arnaud N Davier M Derkach D da Costa JF Grosdidier G Le Diberder F Lutz AM Malaescu B Perez A Roudeau P Schune MH Serrano J Sordini V Stocchi A Wang L Wormser G Lange DJ Wright DM Bingham I Chavez CA Coleman JP Fry JR Gabathuler E Gamet R Hutchcroft DE Payne DJ Touramanis C Bevan AJ Di Lodovico F Sacco R Sigamani M Cowan G Paramesvaran S Wren AC Brown DN Davis CL Denig AG Fritsch M Gradl W Hafner A Alwyn KE Bailey D Barlow RJ Jackson G Lafferty GD Anderson J Cenci R Jawahery A Roberts DA Simi G Tuggle JM Dallapiccola C Salvati E Cowan R Dujmic D Sciolla G Zhao M Lindemann D Patel PM Robertson SH Schram M Biassoni P Lazzaro A Lombardo V Palombo F Stracka S Cremaldi L Godang R Kroeger R Sonnek P Summers DJ Nguyen X Simard M Taras P De Nardo G Monorchio D Onorato G Sciacca C Raven G Snoek HL Jessop CP Knoepfel KJ LoSecco JM Wang WF Corwin LA Honscheid K Kass R Morris JP Blount NL Brau J Frey R Igonkina O Kolb JA Rahmat R Sinev NB Strom D Strube J Torrence E Castelli G Feltresi E Gagliardi N Margoni M Morandin M Posocco M Rotondo M Simonetto F Stroili R Ben-Haim E Bonneaud GR Briand H Calderini G Chauveau J Hamon O Leruste P Marchiori G Ocariz J Prendki J Sitt S Biasini M Manoni E Rossi A Angelini C Batignani G Bettarini S Carpinelli M Casarosa G Cervelli A Forti F Giorgi MA Lusiani A Neri N Paoloni E Rizzo G Walsh JJ Pegna DLL Lu C Olsen J Smith AJS Telnov AV Anulli F BARACCHINI, ELISABETTA Cavoto G Faccini R Ferrarotto F FERRONI, Fernando Gaspero M Gioi LL Mazzoni MA Piredda G Renga F Hartmann T Leddig T Schroder H Waldi R Adye T Franek B Olaiya EO Wilson FF Emery S de Monchenault GH Vasseur G Yeche C Zito M Allen MT Aston D Bard DJ Bartoldus R Benitez JF Cartaro C Convery MR Dorfan J Dubois-Felsmann GP Dunwoodie W Field RC Sevilla MF Fulsom BG Gabareen AM Graham MT Grenier P Hast C Innes WR Kelsey MH Kim H Kim P Kocian ML Leith DWGS Li S Lindquist B Luitz S Luth V Lynch HL MacFarlane DB Marsiske H Muller DR Neal H Nelson S O'Grady CP Ofte I Perl M Pulliam T Ratcliff BN Roodman A Salnikov AA Santoro V Schindler RH Schwiening J Snyder A Su D Sullivan MK Sun S Suzuki K Thompson JM Va'vra J Wagner AP Weaver M West CA Wisniewski WJ Wittgen M Wright DH Wulsin HW Yarritu AK Young CC Ziegler V Chen XR Park W Purohit MV White RM Wilson JR Sekula SJ Bellis M Burchat PR Edwards AJ Miyashita TS Ahmed S Alam MS Ernst JA Pan B Saeed MA Zain SB Guttman N Soffer A Lund P Spanier SM Eckmann R Ritchie JL Ruland AM Schilling CJ Schwitters RF Wray BC Izen JM Lou XC Bianchi F Gamba D Pelliccioni M Bomben M Lanceri L Vitale L Lopez-March N Martinez-Vidal F Milanes DA Oyanguren A Albert J Banerjee S Choi HHF Hamano K King GJ Kowalewski R Lewczuk MJ Nugent IM Roney JM Sobie RJ Gershon TJ Harrison PF Latham TE Puccio EMT Band HR Dasu S Flood KT Pan Y Prepost R Vuosalo CO Wu SL mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2011
Rivista:	PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract:	We report the result of a search for the rare decay B-0 -> gamma gamma in 426 fb(-1) of data, corresponding to 226 x 10(6) B-0(B) over bar (0) pairs, collected on the Y(4S) resonance at the PEP-II asymmetric-energy e(+)e(-) collider using the BABAR detector. We use a maximum likelihood fit to extract the signal yield and observe 21(-12)(+13) signal events with a statistical significance of 1.8 sigma. This corresponds to a branching fraction B(B-0 -> gamma gamma) = (1.7 +/- 1.1(stat.) +/- 0.2(syst.)) x 10(-7). Based on this result, we set a 90% confidence level upper limit of B(B-0 -> gamma gamma) < 3.2 x 10(-7).
Handle:	http://hdl.handle.net/20.500.12571/1457
Appare nelle tipologie:	1.1 Articolo in rivista

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