6533b7d6fe1ef96bd12672a1

RESEARCH PRODUCT

Exclusive measurements of b → sγ transition rate and photon energy spectrum

C. HeartyD. J. SummersV. PrasadRoberto CalabreseJ. OcarizJ. W. GaryR. J. SobieL. VitaleF. Martinez-vidalDominik MüllerR. CheaibJ. M. LoseccoT. LueckN. B. SinevGabriele SimiR. BartoldusV. E. BlinovV. B. GolubevB. LindquistC. L. DavisP. PatteriG. R. BonneaudElisa GuidoJ. L. RitchieD. W. G. S. LeithB. BhuyanJ. F. BenitezR. GodangR. GodangG. CalderiniB. G. FulsomH. L. LynchM. Lo VetereG. J. KingA. OyangurenH. W. WulsinR. C. FieldL. PiemonteseMaurizio MartinelliA. A. SalnikovA. M. LutzW. J. WisniewskiG. FinocchiaroD. M. StromA. RoodmanV. LuthG. M. VitugW. F. WangA. G. DenigJ. E. BrauH. AhmedJ. M. RoneyR. GorodeiskyA. AdametzM. S. AlamD. R. PeimerE. GabathulerW. R. InnesR. CenciP. LewisF. C. PorterR. AndreassenM. FritschD. J. AsgeirssonChristopher WestYu I. SkovpenM. BondioliM. MuneratoHeiko LackerM. SimardD. A. RobertsS. PassaggioA. SnyderC. TouramanisG. LynchA. ZalloG. GrosdidierD. DerkachG. RizzoF. F. WilsonE. FioravantiT. PulliamR. FreyM. H. KelseyS. BettariniJ. G. SmithP. BiassoniM. L. KocianMarcello RotondoGeorge LaffertyM. SigamaniE. O. OlaiyaDenis BernardF. SimonettoR. H. SchindlerD. E. HutchcroftC. DallapiccolaT. LeddigC. BüngerRoland WaldiF. FerroniMatteo RamaChunhui ChenM. K. SullivanH. R. BandE. M.t. PuccioJ. R. FryC. H. ChengS. StrackaA. JawaheryFlorian Urs BernlochnerO. GrünbergF. PalomboYu. G. KolomenskyJames D. OlsenL. M. CremaldiA. M. RulandP. LundP. J. ClarkD. BettoniA. N. YushkovG. P. Dubois-felsmannR. AyadR. AyadW. S. LockmanR. KroegerR. De SangroS. L. WuG. CibinettoG. De NardoD. DujmicA. CalcaterraH. AtmacanEnrico RobuttiJ. ChauveauE. TorrenceP. OngmongkolkulM. CarpinelliMaurizio BiasiniElisa ManoniE. FeltresiEleonora LuppiW. ParkA. P. OnuchinM. R. ConveryS. PlayferH. SchröderH. SchröderPaul Fraser HarrisonW. H. TokiF. Di LodovicoI. M. PeruzziAbner SofferOwen Rosser LongZ. C. HuardA. SeidenS. PrellI. GarziaB. OberhofD. J. PayneD. H. WrightU. NauenbergC. PatrignaniCh YècheJames H CochranV. TisserandR. F. SchwittersV. PoireauPrafulla Kumar BeheraL. T. KerthN. TasneemAchille StocchiO. HamonDmytro KovalskyiMarco BombenD. B. MacfarlaneJ. P. LeesS. LuitzJ. A. ErnstL. SunAlberto CervelliD. G. HitlinMatteo NegriniM. J. LewczukA. V. TelnovA. PalanoD. A. DollP. M. PatelP. M. PatelB. SpaanStephen Robert WagnerA. J. MartinezM. T. GrahamAdrian John BevanA. M. EisnerE. A. KravchenkoAidan Randle-condeA. HafnerJ. KrosebergX. C. LouJ. J. WalshSw. BanerjeeB. C. WrayF. AnulliA. LusianiW. GradlE. GraugesNicola NeriS. I. SerednyakovMaria Roberta MongeJ. A. MckennaMario GiorgiN. GagliardiK. R. SchubertY. B. PanAlessandro GazS. H. RobertsonL. LanceriA. J. EdwardsR. KowalewskiF. LiuG. Hamel De MonchenaultCrisostomo SciaccaD. AstonD. N. BrownF. BianchiR. SaccoE. PaoloniD. LindemannSridhara DasuC. VossS. EmeryA. Y. RakitinS. SittMarie Helene SchuneGiulia CasarosaM. A. MazzoniB. N. RatcliffD. SuHerbert KochA. E. RubinV. SantoroG. WormserS. NelsonM. V. PurohitJ. AlbertT. S. MattisonT. E. LathamA. P. WagnerMauro MorandinM. PiccoloR. SchwierzK. GriessingerM. WittgenG. SciollaB. HamiltonM. EbertColin JessopR. PrepostC. HastT. M. HongD. J. LangeBruce SchummG. PireddaR. ContriM. L. PerlB. MalaescuT. SchroederM. MoriiZ. J. GuoJoseph IzenG. BatignaniE. PrencipeA. J.s. SmithP. TarasE. P. SolodovH. H. F. ChoiW. DunwoodieMartino MargoniT. J. GershonC. C. YoungV. ZieglerX. NguyenB. EchenardW. T. MeyerR. Baldini-ferroliM. MandelkernS. M. SpanierE. Ben-haimD. KirkbyG. VasseurK. T. FloodD. J. BardC. L. LeeSimon AkarE. BehnI. M. NugentJ. Garra TicoM. GasperoJ. P. ColemanD. S. ChaoP. SonnekR. EckmannM. DavierG. OnoratoG. JacksonJ. DorfanA. M. GabareenPh LerusteW. T. FordTim AdyeN. ArnaudR. D. KassB. T. MeadowsM. VerderiG. RavenU. MallikT. S. MiyashitaM. D. SokoloffP. R. BurchatAndrea Rodriguez PerezJames R. WilsonH. BriandG. EigenA. V. GritsanClaudio CampagnariF. FortiM. BellisP. C. BloomK. Yu TodyshevU. UwerR. StroiliH. A. NealD. MonorchioP. D. DaunceyT. HartmannA. R. BuzykaevCorrado AngeliniStephen SekulaD. Lopes PegnaA. KhanD. S. BaileyV. P. DruzhininC. BozziK. HonscheidC. A. ChavezR. J. BarlowR. J. BarlowM. PosoccoAlessandro RossiS. PacettiR. CowanP. KimR. M. WhiteM. Franco SevillaC. CartaroPhilippe GrenierP. RoudeauR. FacciniF. FerrarottoA. J. LankfordF. Le DiberderJ. D. RichmanG. A. CowanL. Li GioiJ. Va’vraD. GambaN. GuttmanB. StuguG. MarchioriDouglas Wright

subject

PhysicsNuclear and High Energy PhysicsParticle physicsPhoton010308 nuclear & particles physicsBranching fractionElectron–positron annihilationPhoton energyKinetic energyTransition rate matrix01 natural sciencesMeasure (mathematics)Resonance (particle physics)Nuclear physics0103 physical sciencesHigh Energy Physics::Experiment010306 general physics

description

We use 429  fb^(-1) of e^+e^- collision data collected at the Υ(4S) resonance with the BABAR detector to measure the radiative transition rate of b→sγ with a sum of 38 exclusive final states. The inclusive branching fraction with a minimum photon energy of 1.9 GeV is found to be B(B → X_sγ)=(3.29±0.19±0.48)×10+(-4) where the first uncertainty is statistical and the second is systematic. We also measure the first and second moments of the photon energy spectrum and extract the best-fit values for the heavy-quark parameters, m_b and μ_π^2, in the kinetic and shape function models.

10.1103/physrevd.86.052012https://resolver.caltech.edu/CaltechAUTHORS:20121029-081744225