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. 2023 Nov 3;131(18):181801.
doi: 10.1103/PhysRevLett.131.181801.

Tests of Light-Lepton Universality in Angular Asymmetries of B^{0}→D^{*-}ℓν Decays

I AdachiK AdamczykL AggarwalH AiharaN AkopovA AloisioN Anh KyD M AsnerH AtmacanT AushevV AushevM AversanoV BabuH BaeS BahinipatiP BambadeSw BanerjeeM BarrettJ BaudotM BauerA BaurA BeaubienF BechererJ BeckerP K BeheraJ V BennettF U BernlochnerV BertacchiM BertemesE BertholetM BessnerS BettariniB BhuyanF BianchiT BilkaD BiswasA BobrovD BodrovA BolzA BondarJ BorahA BozekM BračkoP BranchiniR A BriereT E BrowderA BudanoS BussinoM CampajolaL CaoG CasarosaC CecchiJ CerasoliM-C ChangP ChangR CheaibP CheemaV ChekelianB G CheonK ChilikinK ChirapatpimolH-E ChoK ChoS-K ChoiS ChoudhuryJ CochranL CoronaL M CremaldiS DasF DattolaE De La Cruz-BureloS A De La MotteG De NardoM De NuccioG De PietroR de SangroM DestefanisS DeyR DhamijaA Di CantoF Di CapuaJ DingfelderZ DoležalI Domínguez JiménezT V DongM DorigoK DortD DossettS DreyerS DubeyG DujanyP EckerM EliachevitchD EpifanovP FeichtingerT FerberD FerlewiczT FillingerC FinckG FinocchiaroA FodorF FortiA FreyB G FulsomA GabrielliE GanievM Garcia-HernandezR GargA GarmashG GaudinoV GaurA GazA GellrichG GhevondyanD GhoshH GhumaryanG GiakoustidisR GiordanoA GiriB GobboR GodangO GogotaP GoldenzweigW GradlS GranderathE GrazianiD GreenwaldZ GruberováT GuY GuanK GudkovaS HalderY HanT HaraK HayasakaH HayashiiS HazraC HeartyM T HedgesA HeidelbachI Heredia de la CruzM Hernández VillanuevaA HershenhornT HiguchiE C HillM HoekM HohmannP HorakC-L HsuT IijimaK InamiG IngugliaN IpsitaA IshikawaS ItoR ItohM IwasakiP JacksonW W JacobsE-J JangQ P JiS JiaY JinA JohnsonH JunkerkalefeldA B KaliyarJ KandraK H KangG KaryanT KawasakiF KeilC KetterC KieslingC-H KimD Y KimK-H KimY-K KimH KindoK KinoshitaP KodyšT KogaS KohaniK KojimaT KonnoA KorobovS KorparE KovalenkoR KowalewskiT M G KraetzschmarP KrižanP KrokovnyT KuhrJ KumarM KumarK KumaraT KunigoA KuzminY-J KwonS LacapraraY-T LaiT LamL LanceriJ S LangeM LaurenzaR LeboucherF R Le DiberderP LeitlD LevitP M LewisC LiL K LiY LiJ LibbyQ Y LiuZ Q LiuD LiventsevS LongoT LueckT LuoC LyuY MaM MaggioraS P MaharanaR MaitiS MaityG MancinelliR ManfrediE ManoniA C MantheiM MantovanoD MarcantonioS MarcelloC MarinasL MartelC MartelliniA MartiniT MartinovL MassaccesiM MasudaT MatsudaD MatvienkoS K MauryaJ A McKennaR MehtaF MeierM MerolaF MetznerM MilesiC MillerM MirraK MiyabayashiG B MohantyN Molina-GonzalezS MondalS MonetaH-G MoserM MrvarR MussaI NakamuraY NakazawaA Narimani CharanM NarukiZ NatkaniecA NatochiiL NayakG NazaryanN K NisarS NishidaS OgawaH OnoP OskinF OtaniP PakhlovG PakhlovaA PaladinoA PantaE PaoloniS PardiK ParhamS-H ParkB PaschenA PasseriS PatraS PaulT K PedlarI PeruzziR PeschkeR PestotnikF PhamM PiccoloL E PiilonenP L M Podesta-LermaT PodobnikS PokharelC PrazS PrellE PrencipeM T PrimH PurwarN RadP RadosG RaeuberS RaizM ReifS ReiterM RemnevI Ripp-BaudotG RizzoS H RobertsonM RoehrkenJ M RoneyA RostomyanN RoutG RussoD SahooS SandilyaA SangalL SanteljY SatoV SavinovB ScavinoC SchmittM SchnepfC SchwandaY SeinoA SelceK SenyoJ SerranoM E SeviorC SfientiW ShanC SharmaC P ShenX D ShiT ShillingtonJ-G ShiuD ShtolB ShwartzA SibidanovF SimonJ B SinghJ SkorupaR J SobieM SobotzikA SofferA SokolovE SolovievaS SpataroB SpruckM StaričP StavroulakisS StefkovaZ S StottlerR StroiliJ StrubeM SumihamaK SumisawaW SutcliffeH SvidrasM TakahashiM TakizawaU TamponiK TanidaF TenchiniA ThallerO TittelR TiwaryD TonelliE TorassaN ToutounjiK TrabelsiI TsaklidisM UchidaI UedaY UematsuT UglovK UngerY UnnoK UnoS UnoP UrquijoY UshirodaS E VahsenR van TonderG S VarnerK E VarvellM VeronesiV S VismayaL VitaleV VobbilisettiR VolpeB WachE WaheedM WakaiS WallnerE WangM-Z WangZ WangA WarburtonM WatanabeS WatanukiM WelschC WesselX P XuB D YabsleyS YamadaW YanS B YangJ H YinK YoshiharaC Z YuanL ZaniY ZhangV ZhilichJ S ZhouQ D ZhouV I ZhukovaR ŽlebčíkBelle II Collaboration

Tests of Light-Lepton Universality in Angular Asymmetries of B^{0}→D^{*-}ℓν Decays

I Adachi et al. Phys Rev Lett. .

Abstract

We present the first comprehensive tests of the universality of the light leptons in the angular distributions of semileptonic B^{0}-meson decays to charged spin-1 charmed mesons. We measure five angular-asymmetry observables as functions of the decay recoil that are sensitive to lepton-universality-violating contributions. We use events where one neutral B is fully reconstructed in ϒ(4S)→BB[over ¯] decays in data corresponding to 189 fb^{-1} integrated luminosity from electron-positron collisions collected with the Belle II detector. We find no significant deviation from the standard model expectations.

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