6533b82efe1ef96bd1293ab9

RESEARCH PRODUCT

Measurement of the Ratio of Branching FractionsB(B¯0→D*+τ−ν¯τ)/B(B¯0→D*+μ−ν¯μ)

Kevin MaguireF. BlancNiels TuningJ. D. PriceJonathan HarrisonT. M. KarbachChitsanu KhurewathanakulJ. M. Otalora GoicocheaMarco AdinolfiJean François MarchandBenedetto Gianluca SiddiMichael MccannDavid GasconTimothy GershonClaudio GottiThomas BlakeBiplab DeyEmiliano FurfaroMarco CorvoAdlène HicheurAlexander ShiresLev ShekhtmanMark SmithDaniel JohnsonMarek IdzikThomas HadavizadehM. Lucio MartinezMarco ClemencicD. TonelliMarco CattaneoCameron Thomas DeanHarry CliffN. LusardiDavid WardL. GarridoE. BowenA. B. MorrisAlexander MazurovTjeerd KetelMarcello RotondoA. Di CantoFlorian KruseO. GrünbergR. F. KoopmanRenato QuaglianiK. PetridisJ. SerranoI. El RifaiFrank MeierFederica LionettoDavide PinciVitaly VorobyevS. LohnSneha MaldeP. CampanaDavid LohAndrey GolutvinV. HeijneP. OwenS. TolkAxel Kevin KuonenGiovanni PunziMariusz WitekMohamad KozeihaStephane TourneurUlrich EitschbergerStefanie ReichertR. Silva CoutinhoT. RufPierre HenrardOliver LuptonC. Santamarina RiosWojciech WislickiXuhao YuanR. CalabreseHeinrich SchindlerZ. MatheAnatoliy DovbnyaGuido AndreassiAgnieszka Oblakowska-muchaF. DupertuisWander BaldiniTatiana LikhomanenkoJacques LefrançoisXavier Vilasis-cardonaMarek SirendiMarcin KucharczykC. ThomasSandra AmatoAlbert BurscheD. LambertF. SoomroStefano PerazziniM. M. ReidChristopher JonesTimothy HeadJ. JalochaF. J. P. SolerJoel ClosierS. PlayferE. Picatoste OlloquiAlessandro BertolinS. AliK. Carvalho AkibaT. SkwarnickiJolanta BrodzickaC. MatteuzziPaolo DuranteA. MordàLucia GrilloS. ElyMichael SokoloffCjg OnderwaterRoland BernetZishuo YangS. WandernothP. Alvarez CartelleAlexey DzyubaMauro MorandinMarie Helene SchuneChristian VoßLaurent DufourSimone BifaniCharlotte WallaceM. TeklishynIain LongstaffS. WrightNicola NeriJ. L. FuMartino BorsatoOlivier Göran GirardMika VesterinenB. PietrzykL. CojocariuS. BensonR. MountainMaximilian SchluppRoger FortyM. Cruz TorresJ. PanmanClaudia VaccaA. PellegrinoTatsuya NakadaGabriele SimiA. MapelliC. SatrianoGiulio DujanyGianni PensoKrzysztof SwientekPietro MarinoMarcel MerkNigel WatsonB. HamiltonI. O. SkillicornJ. HeMax NeunerMirco DorigoAndreas WeidenEddy JansDavid WebsdaleG. WormserJ. DalsenoK. MatthieuStephane T'jampensEvgeny GushchinMassimiliano FioriniConor FitzpatrickJonas RademackerMatteo RamaU. StraumannSai-juan ChenR. Graciani DiazYu. GuzDmytro MelnychukBrian MeadowsMark Richard James WilliamsM. TobinElena GraveriniD. Martinez SantosOlivier DeschampsR. OldemanK. TrabelsiE. PriceGiacomo GrazianiStephen M. StahlAndrew CrocombeRonan WallaceF. Ferreira RodriguesJakub MoronAlessandro CardiniJ. R. SmithValery PugatchOleg MaevNicola SkidmoreA. OyangurenErica PolycarpoPhilip IltenMurilo RangelM. FrosiniTimon SchmelzerThemistocles BowcockViolaine BelleeDominik Stefan MitzelR. Le GacS. A. WottonNathan JurikJ. P. LeesGuy WilkinsonPh. GhezMaurizio MartinelliJohn William RonayneClarissa BaessoR. LefèvreRobert CurrieE. G. ThomasS. CadedduAdam DavisCarla GöbelD. BrettRoberta CardinaleDavid GerickP. Ruiz VallsThomas NikodemC. BozziI. R. KenyonChristophe HaenV. CogoniS. HallH. SnoekO. SchneiderMatthias KaracsonMaulik R. PatelA. Romero VidalMikhail ZavertyaevM. Van BeuzekomD. A. MilanesDianne FergusonAndrew CookBlake LeveringtonAlex BirnkrautFrancesca DordeiWouter HulsbergenN. RauschmayrKurt RinnertJanine MüllerIurii RaniukA. D. NguyenA. VorobyevRoland WaldiS. GambettaMatteo PalutanD. SouzaS. GianìChristoph FreiRainer SchwemmerThierry GysA. SchopperKarol HennessyRamon NietA. PalanoTomasz SzumlakJ. BuytaertJulian WishahiXuesong LiuJ. J. Saborido SilvaRobert ApplebyAdalberto SciubbaLorenzo SestiniV. RomanovskyFergus WilsonWilliam BarterS. GregsonM. MeissnerR. SantacesariaP. SzczypkaE. CognerasYang LiJ. Molina RodriguezAlexey BadalovIllya ShapovalM. HoballahM. MussiniJohn BackMiroslaw FirlejJaap VelthuisTobias TekampeAgnieszka DziurdaGiulio GazzoniKatharina MüllerNicolas DéléageMaximilien ChefdevilleAlessandro PetroliniA. BienNikolay NikitinElena Dall'occoPaolo CarnitiDaniel VieiraE. GreeningW. BoniventoGiovanni VenezianoMarc-olivier BettlerA. A. AlvesA. Puig NavarroMichael Joseph MorelloPatrick KoppenburgLei ZhangGiampiero MancinelliBarbara SciasciaPhilippe D'argentAna Barbara RodriguesThibaud HumairDavid HutchcroftM. P. WilliamsAlexander BerezhnoyEduardo RodriguesM. CoombesV. NiessEluned SmithE. Ben-haimA. GianelleE. GraugesMaxime SchubigerAna TrisovicD. NinciMarta CalviMinh Tâm TranVladimir GligorovSilvia BorghiPavel KrokovnySebastian NeubertA. JaegerB. Sanmartin SedesLiupan AnF. F. JingJan MaratasB. PopoviciIgnacio BediagaAndrea MauriC. FärberPanagiotis TsopelasAlexandru GrecuJ. J. WalshM. ZangoliD. HyndsParas NaikShu-faye CheungAlessandro PistoneLars EklundP. MorawskiRichard JacobssonD. DecampLorenzo CapriottiG. AuriemmaS. C. HainesChristoph HombachFederico AlessioAndrea ContuVanessa MüllerL. A. Granado CardosoP. Rodriguez PerezV. Rives MolinaMihai StraticiucZiad AjaltouniColin BarschelT. PilařMarina ArtusoMarco TreschSvende BraunVincenzo VagnoniFrederic MachefertSheldon StoneM. N. MinardMarco SantimariaR. CenciAndrew McnabL. ZhongG. CollazuolPeter ClarkeMatthew NeedhamGiovanni CavalleroA. ZhokhovS. StrackaYanxi ZhangA. JawaheryU. MarconiG. MartellottiMarco PetruzzoMatthew KenzieMarian StahlSevda EsenUlrik EgedeLuca TomassettiStefano ZucchelliJ. A. De VriesF. ArchilliS. StevensonJ. Van LeerdamGloria CortiEleonora LuppiMoritz DemmerJ. BeddowMichael AlexanderMarco GersabeckR. NandakumarP. FolDaniel Patrick O'hanlonStephen OgilvyB. Souza De PaulaCh. ElsasserOlivier LeroyW. KansoLuca PescatoreDomenico GalliBarbara StoraciBo LiuF. SterpkaM. Plo CasasusFederico StagniIvan BelyaevX. Cid VidalA. ArtamonovT. LesiakDmitry GolubkovO. SteinkampJ. M. YuR. LindnerR. GauldT. D. NguyenS. KarodiaGuido HaefeliDarya SavrinaIwan Thomas SmithValerie GibsonV. Fernandez AlborP. DavidPaul SeyfertS. FilippovLennaert BelG. AlkhazovDonatella LucchesiJose LopesVasileios SyropoulosMatthew KelseyNikolay BondarE. TournefierD. M. SaundersElie AslanidesJ. MarksIrina NastevaU. UwerDaniel Charles CraikNiko NeufeldL. CassinaC. ParkesCristina LazzeroniFabio FerrariWojciech KucewiczMiriam HeßL. Del BuonoBrice MaurinO. OkhrimenkoG. MancaMarek SzczekowskiRoger BarlowFlorin MaciucEvelina GersabeckM. Grabalosa GándaraFederico RediL. De PaulaAnna LupatoM. BritschJ. WimberleyZhirui XuNicola SerraManuel SchillerP. Vazquez RegueiroG. A. CowanA. C. Dos ReisDaniel LacarrereM. Ferro-luzziN. ChiapoliniD. DossettTimothy EvansSamuel CoquereauS. SridharanStephanie Hansmann-menzemerA. NovoselovKenneth WylliePaolo GandiniRobert EkelhofSuzanne KlaverB. LanghansGaia LanfranchiWilliam SutcliffeVasily KudryavtsevLouis HenryKrzysztof KurekTomasz FiutowskiP. CollinsF. PalomboV.g. ShevchenkoVincenzo BattistaD. VoongClaire ProuveNeville HarnewS. SwientekJessica PrisciandaroStefan RoiserC. Marin BenitoS. T. HarnewJohannes AlbrechtMalcolm JohnF. Martinez VidalF. BedeschiC. LinnThomas LathamC. PatrignaniV. TisserandThomas N. WilliamsFrancesco DettoriPascal PerretS. AmerioN. FarleyMirko DeckenhoffM. PappagalloTara ShearsC. GasparS. FarryGianluigi CasseAnton PoluektovN. TorrAnita NandiAlexander LeflatR. Vazquez GomezAlexander SemennikovOleg StenyakinM. AndreottiStig Topp-joergensenO. Aquines GutierrezSergey BarsukH. RuizJ. ToddL. Castillo GarciaAlessio PiucciG. D. PatelAlessio SartiYasmine AmhisB. RachwalIlya KomarovYury ShcheglovJ. MccarthyM. KrepsAngelo GeraciSebastian BachmannM. Calvo GomezDmitry PopovG. PassalevaJulien CoganMarcin ChrzaszczC. Sanchez MayordomoAlexey ZhelezovV. ObraztsovStephan EisenhardtPeter GriffithFrancesco PolciJ. E. AndrewsS. MonteilJ. RouvinetR. McnultyD. VolyanskyyCh. CauetSergii KandybeiCheryl PappenheimerS. De CapuaGiulia TellariniIvan PolyakovLuciano PappalardoO. KochebinaP. SpradlinA. CarboneAlessia SattaGiovanni CarboniC. Nguyen-mauK. KreplinAndrey TayduganovM. LilesVarvara BatozskayaJ. Garra TicoLaurence CarsonBeat JostL. BeaucourtS. BluskPh. CharpentierV. BocciJ. Van TilburgChristoph LangenbruchW. QianA. PritchardG. BencivenniDonal HillJ. M. De MirandaA. OttoLavinia-helena GiubegaB. MusterGregory CiezarekA. Dosil SuárezA. VallierD. Campora PerezMarkus FrankC. Vázquez SierraKarlis DreimanisM. GandelmanM. De CianC. PotteratS. RicciardiT. PoikelaJ. BlouwGiovanni ValentiY. N. GaoAntonio FalabellaG. KrockerBenoit ViaudYuehong XieAndrea BizzetiB. SchmidtA. LaiB. GuiMark WhiteheadLaura GavardiA. VollhardtSemen EidelmanTengiz KvaratskheliyaAntonios PapanestisMarouen BaalouchM. ShapkinVictor CocoMike J. WilkinsonM. Vieites DiazKonrad KlimaszewskiR. FayVictor EgorychevS. CunliffeStefano GalloriniJ. García PardiñasK. De BruynI. A. MonroyM. Pepe AltarelliMarianna FontanaA. MassafferriMichael SchmellingXiaoxue HanB. KhanjiR. MärkiA. GomesAbhijit MathadC. FarinelliA. A. AffolderM. VeltriN. H. BrookJ. AndersonGeorge LaffertySimon AkarKlaus FohlA. BayG. RavenAlexander BondarMarco FioreR. DzhelyadinAndrei TsaregorodtsevS. RichardsJ. A. Rodriguez LopezHans DijkstraNaylya SagidovaJing WangE. Van HerwijnenT. BirdFranz MuheimA. Comerma-montellsMorgan MartinStefania VecchiP. ManningChristos HadjivasiliouChristian JoramHaiyun LuoFrederic TeubertO. YushchenkoB. SpaanD. Martins TostesS. DonleavyBenjamin CouturierFlavio FontanelliB. Osorio RodriguesJ. A. Hernando MorataRoel AaijAlexander D. PopovP. De SimoneCarmelo D'ambrosioV. Salustino GuimaraesLeonid KravchukBiagio SaittaEmanuele SantovettiRosen MatevLucio AnderliniOscar De Aguiar FranciscoMichael KolpinF. Di RuscioA. Gallas TorreiraL. SunAndrey UstyuzhaninSajan EasoBernardo AdevaHal EvansMatthew CharlesN. HussainPatrick RobbeArtur UklejaS. StoicaAlex PearceT. BrittonM. RihlJ. BentonP. SailDenis DerkachAlexander Malinin

subject

PhysicsParticle physicsLarge Hadron Collider010308 nuclear & particles physicsBranching fractionHigh Energy Physics::PhenomenologyGeneral Physics and AstronomyFermion7. Clean energy01 natural sciencesThird generationNuclear physics0103 physical sciencesHigh Energy Physics::ExperimentLeptoquark010306 general physicsLepton

description

The branching fraction ratio R(D-*) = B((B) over bar (0) -> D-*(+)tau(-)(nu) over bar (tau))/B((B) over bar (0) -> D-*(+)mu(-)(nu) over bar (mu)) is measured using a sample of proton-proton collision data corresponding to 3.0 fb(-1) of integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The tau lepton is identified in the decay mode tau(-) -> mu(-)(nu) over bar (mu)nu(tau). The semitauonic decay is sensitive to contributions from non-standard-model particles that preferentially couple to the third generation of fermions, in particular, Higgs-like charged scalars. A multidimensional fit to kinematic distributions of the candidate (B) over bar (0) decays gives R(D-*) = 0.336 +/- 0.027(stat) +/- 0.030(syst). This result, which is the first measurement of this quantity at a hadron collider, is 2.1 standard deviations larger than the value expected from lepton universality in the standard model.

yearjournalcountryeditionlanguage
2015-09-09Physical Review Letters
https://doi.org/10.1103/physrevlett.115.111803