Search for the decay D-0 -> gamma gamma and measurement of the branching fraction for D-0 -> pi(0)pi(0)

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doi:10.1103/PhysRevD.85.091107

We search for the rare decay of the D-0 meson to two photons, D-0 -> gamma gamma, and present a measurement of the branching fraction for a D-0 meson decaying to two neutral pions, B(D-0 -> pi(0)pi(0)). The data sample analyzed corresponds to an integrated luminosity of 470.5 fb(-1) collected by the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC. We place an upper limit on the branching fraction, B(D-0 -> gamma gamma) < 2.2 x 10(-6), at 90% confidence level. This limit improves on the existing limit by an order of magnitude. We also find B(D-0 -> pi(0)pi(0)) = (8.4 +/- 0.1 +/- 0.4 +/- 0.3 +/-) x 10(-4).

Titolo:	Search for the decay D-0 -> gamma gamma and measurement of the branching fraction for D-0 -> pi(0)pi(0)
Autori:	Lees JP Poireau V Prencipe E Tisserand V Tico JG Grauges E Martinelli M Milanes DA Palano A Pappagallo M Eigen G Stugu B Sun L Brown DN Kerth LT Kolomensky YG Lynch G Koch H Schroeder T Asgeirsson DJ Hearty C Mattison TS McKenna JA Khan A Blinov VE Buzykaev AR Druzhinin VP Golubev VB Kravchenko EA Onuchin AP Serednyakov SI Skovpen YI Solodov EP Todyshev KY Yushkov AN Bondioli M Curry S Kirkby D Lankford AJ Mandelkern M Stoker DP Atmacan H Gary JW Liu F Long O Vitug GM Campagnari C Hong TM Kovalskyi D Richman JD West CA Eisner AM Kroseberg J Lockman WS Martinez AJ Schalk T Schumm BA Seiden A Cheng CH Doll DA Echenard B Flood KT Hitlin DG Ongmongkolkul P Porter FC Rakitin AY Andreassen R Dubrovin MS Meadows BT Sokoloff MD Bloom PC Ford WT Gaz A Nagel M Nauenberg U Smith JG Wagner SR Ayad R Toki WH Spaan B Kobel MJ Schubert KR Schwierz R Bernard D Verderi M Clark PJ Playfer S Watson JE Bettonia D Bozzia C Calabrese R Cibinetto G Fioravanti E Garzia I Luppi E Munerato M Negrini M 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 Bhuyan B Prasad V Lee CL Morii M Edwards AJ Adametz A Marks J Uwer U Bernlochner FU Ebert M Lacker HM Lueck T Dauncey PD Tibbetts M Behera PK Mallik U Chen C Cochran J Crawley HB Meyer WT Prell S Rosenberg EI Rubin AE Gritsan AV Guo ZJ Arnaud N Davier M Derkach D Grosdidier G Le Diberder F Lutz AM Malaescu B Roudeau P Schune MH Stocchi A Wormser G Lange DJ Wright DM Bingham I Chavez CA Coleman JP Fry JR Gabathuler E Hutchcroft DE Payne DJ Touramanis C Bevan AJ Di Lodovico F Sacco R Sigamani M Cowan G Paramesvaran S Brown DN Davis CL Denig AG Fritsch M Gradl W Hafner A Alwyn KE Bailey D Barlow RJ Jackson G Lafferty GD Cenci R Hamilton B Jawahery A Roberts DA Simi G Dallapiccola C Salvati E Cowan R Dujmic D Sciolla G 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 Taras P De Nardo G Monorchio D Onorato G Sciacca C Raven G Snoek HL Jessop CP Knoepfel KJ LoSecco JM Wang WF Honscheid K Kass R Morris JP Brau J Frey R Sinev NB Strom D Torrence E Feltresi E Gagliardi N Margoni M Morandin M Posocco M Rotondo M Simonetto F Stroili R Ben Haim E Bomben M Bonneaud GR Briand H Calderini G Chauveau J Hamon O Leruste P Marchiori G Ocariz 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, Alberto Neri N Oberhof B Paoloni E Perez A Rizzo G Walsh JJ Pegna DL Lu C Olsen J Smith AJS Telnov AV Anulli F Cavoto G Faccini R Ferrarotto F Ferroni F Gaspero M Gioi LL Mazzoni MA Piredda G Buenger C Hartmann T Leddig T Schroeder H Waldi R Adye T Olaiya EO Wilson FF Emery S de Monchenault GH Vasseur G Yeche C 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 Lewis P Li S Lindquist B Luitz S Luth V Lynch HL MacFarlane DB Muller DR Neal H Nelson S Ofte I Perl M Pulliam T Ratcliff BN Roodman A Salnikov AA Santoro V Schindler H Snyder A Su D Sullivan MK Va'vra J Wagner AP Weaver M Wisniewski WJ Wittgen M Wright DH Wulsin HW Yarritu AK Young CC Ziegler V Park W Purohit MV White RM Wilson JR Randle Conde A Sekula SJ Bellis M Burchat PR Miyashita TS Alam MS Ernst JA Gorodeisky R Guttman N Peimer DR 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 Lanceri L Vitale L Lopez March N Martinez Vidal F Oyanguren A Ahmed H Albert J Banerjee S Choi HHF King GJ Kowalewski R Lewczuk MJ Lindsay C Nugent IM Roney JM Sobie RJ Gershon TJ Harrison PF Latham TE Puccio EMT Band HR Dasu S Pan Y Prepost R Vuosalo CO Wu SL mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2012
Rivista:	PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Digital Object Identifier (DOI):	http://dx.doi.org/10.1103/PhysRevD.85.091107
Appare nelle tipologie:	1.1 Articolo in rivista

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