6533b854fe1ef96bd12ae896
RESEARCH PRODUCT
Measurements of directCPasymmetries inB→Xsγdecays using sum of exclusive decays
A. OyangurenR. GodangL. M. CremaldiB. LindquistA. M. RulandElisa GuidoJ. L. RitchieC. TouramanisP. C. BloomS. I. SerednyakovL. PiemonteseG. P. Dubois-felsmannP. BiassoniO. GrünbergI. M. PeruzziW. F. WangD. G. HitlinE. O. OlaiyaStefan SpanierFlorian Urs BernlochnerE. GabathulerD. M. StromM. MorandinF. C. PorterR. Y. SoU. UwerR. C. FieldF. PalomboT. LueckAndrea Rodriguez PerezJames R. WilsonR. StroiliJames D. OlsenG. EigenD. DerkachT. S. MattisonB. C. WrayR. AndreassenH. A. NealD. MonorchioAbner SofferE. P. SolodovGabriele SimiChristopher WestNicola NeriS. PassaggioC. HastD. J. LangeG. PireddaT. E. LathamC. L. DavisF. BianchiJ. BougherC. VoßM. BellisA. CalcaterraD. SuC. BüngerM. MoriiV. E. BlinovP. D. DaunceyM. PiccoloCh YècheT. HartmannE. GraugesMario GiorgiS. H. RobertsonA. R. BuzykaevSridhara DasuA. JawaheryR. F. SchwittersT. J. GershonC. CartaroM. PerlG. CibinettoG. BatignaniD. E. HutchcroftM. MandelkernW. R. InnesGiulia CasarosaM. R. ConveryD. W. G. S. LeithD. DujmicD. BettoniE. FeltresiR. CenciA. ZalloA. N. YushkovV. B. GolubevMaria Roberta MongeHerbert KochF. SimonettoK. GriessingerE. PaoloniX. C. LouJ. J. WalshD. B. MacfarlaneG. RizzoM. RamaJ. A. MckennaG. WormserMarco BombenT. SchroederPh. LerusteA. PalanoElisa ManoniD. AstonS. PlayferYu G. KolomenskyI. GarziaD. N. BrownC. PatrignaniM. FritschG. CalderiniP. PatteriB. N. RatcliffA. G. DenigB. BhuyanM. T. GrahamEleonora LuppiW. ParkJ. E. BrauS. PrellBiplab DeyB. G. FulsomV. TisserandJames H CochranV. PoireauP. SonnekJose F BenitezN. TasneemD. H. WrightAidan Randle-condeT. LeddigH. R. BandW. S. LockmanF. AnulliG. D. LaffertyF. Le DiberderColin JessopA. M. LutzE. Ben-haimSw. BanerjeeG. R. BonneaudEnrico RobuttiP. OngmongkolkulS. SittF. De MoriM. RotondoS. LuitzHeiko LackerM. Franco SevillaA. LusianiS. PacettiR. CowanR. PrepostJ. Va’vraDmytro KovalskyiM. Lo VetereG. De NardoV. P. DruzhininBruce SchummA. StocchiAndrei SalnikovJ. P. LeesB. OberhofM. VerderiS. AkarM. EbertCorrado AngeliniC. HeartyA. P. WagnerZ. C. HuardM. J. LewczukJ. ChauveauDouglas WrightE. PrencipeChunhui ChenK. R. SchubertV. LuthClaudio CampagnariR. Baldini-ferroliD. KirkbyG. VasseurStephen SekulaD. Lopes PegnaE. A. KravchenkoA. KhanK. T. FloodD. J. SummersD. LindemannA. SnyderP. RoudeauF. FortiC. BozziK. HonscheidCrisostomo SciaccaAlessandro GazR. J. SobieT. M. HongR. J. BarlowU. MallikM. PosoccoL. VitaleF. Martinez-vidalAndrei GritsanDominik MüllerA. AdametzR. SchwierzH. AhmedT. S. MiyashitaP. C. KimP. TarasW. T. MeyerM. GasperoW. DunwoodieE. BehnJ. P. ColemanG. FinocchiaroM. S. AlamF. F. WilsonB. G. PushpawelaF. Di LodovicoK. Yu. TodyshevD. J. PayneR. SaccoU. NauenbergNicolas ArnaudB. SpaanR. ContriL. T. KerthV. ZieglerW. GradlA. J.s. SmithL. LanceriH. H. F. ChoiR. GorodeiskyS. EmeryMaurizio MartinelliM. SimardD. A. RobertsG. GrosdidierJ. M. RoneyB. EchenardA. HafnerD. BernardJ. G. SmithE. M. T. PuccioH. BriandMaurizio BiasiniS. BettariniOwen Rosser LongA. SeidenJ. A. ErnstR. AyadS. ZambitoG. OnoratoA. FilippiB. T. MeadowsA. P. OnuchinL. SunAlberto CervelliG. RavenM. D. SokoloffP. R. BurchatAdrian John BevanMartin KocianD. R. PeimerR. FreyY. B. PanR. KowalewskiG. SciollaB. HamiltonS. NelsonA. M. RossiJoseph IzenA. RoodmanE. FioravantiRoland WaldiF. FerroniPaul Fraser HarrisonP. M. PatelStephen Robert WagnerM. K. SullivanS. MartellottiM. CarpinelliI. M. NugentD. S. ChaoM. DavierM. J. LeeYu. I. SkovpenG. LynchE. TorrenceA. M. GabareenW. T. FordTim AdyeR. D. KassMartino MargoniV. PrasadRoberto CalabreseD. J. BardJ. OcarizJ. W. GaryR. CheaibP. LewisJ. M. LoseccoN. B. SinevW. J. WisniewskiG. J. KingB. MalaescuA. M. EisnerG. Hamel De MonchenaultM. V. PurohitJ. AlbertM. WittgenRafe SchindlerJ. DorfanT. PulliamV. SantoroH. L. LynchJ. R. FryC. H. ChengR. De SangroS. L. WuW. H. TokiH. W. WulsinR. FacciniF. FerrarottoA. J. LankfordJ. D. RichmanPablo Villanueva-perezG. A. CowanR. M. WhiteL. Li GioiD. GambaN. GuttmanB. StuguG. Marchiorisubject
PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsElectron–positron annihilationmedia_common.quotation_subjectResonance01 natural sciencesAsymmetryStandard ModelNuclear physicsDipoleIsospin0103 physical sciencesCP violationB meson010306 general physicsmedia_commondescription
We measure the direct CP violation asymmetry, A_(CP), in B→X_sγ and the isospin difference of the asymmetry, ΔA_(CP), using 429 fb^(−1) of data collected at Υ(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy e^+e^− storage rings operating at the SLAC National Accelerator Laboratory. B mesons are reconstructed from ten charged B final states and six neutral B final states. We find A_(CP)=+(1.7±1.9±1.0)%, which is in agreement with the Standard Model prediction and provides an improvement on the world average. Moreover, we report the first measurement of the difference between A_(CP) for charged and neutral decay modes, ΔA_(CP)=+(5.0±3.9±1.5)%. Using the value of ΔA_(CP), we also provide 68% and 90% confidence intervals on the imaginary part of the ratio of the Wilson coefficients corresponding to the chromomagnetic dipole and the electromagnetic dipole transitions.
year | journal | country | edition | language |
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2014-11-05 | Physical Review D |