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. 2023 Mar 3;130(9):091902.
doi: 10.1103/PhysRevLett.130.091902.

Observation of e^{+}e^{-}→ωχ_{bJ}(1P) and Search for X_{b}→ωϒ(1S) at sqrt[s] near 10.75 GeV

I AdachiL AggarwalH AhmedH AiharaN AkopovA AloisioN Anh KyD M AsnerT AushevV AushevH BaeP BambadeSw BanerjeeJ BaudotM BauerA BeaubienJ BeckerP K BeheraJ V BennettE BernieriF U BernlochnerV BertacchiM BertemesE BertholetM BessnerS BettariniB BhuyanF BianchiT BilkaD BiswasD BodrovA BolzJ BorahA BozekM BračkoP BranchiniT E BrowderA BudanoS BussinoM CampajolaL CaoG CasarosaM-C ChangP CheemaV ChekelianY Q ChenK ChilikinK ChirapatpimolH-E ChoK ChoS-J ChoS-K ChoiS ChoudhuryD CinabroL CoronaS CunliffeS DasF DattolaE De La Cruz-BureloS A De La MotteG De NardoM De NuccioG De PietroR de SangroM DestefanisS DeyA De Yta-HernandezR DhamijaA Di CantoF Di CapuaZ DoležalI Domínguez JiménezT V DongM DorigoK DortS DreyerS DubeyG DujanyM EliachevitchP FeichtingerT FerberD FerlewiczT FillingerG FinocchiaroA FodorF FortiB G FulsomE GanievV GaurA GazA GellrichG GhevondyanR GiordanoA GiriA GlazovB GobboR GodangP GoldenzweigS GranderathE GrazianiD GreenwaldT GuY GuanK GudkovaJ GuilliamsT HaraK HayasakaH HayashiiS HazraC HeartyI Heredia de la CruzM Hernández VillanuevaA HershenhornT HiguchiE C HillH HirataM HohmannC-L HsuT IijimaK InamiG IngugliaN IpsitaA IshikawaS ItoM IwasakiP JacksonW W JacobsD E JaffeE-J JangQ P JiS JiaY JinK K JooH JunkerkalefeldA B KaliyarK H KangR KarlG KaryanC KetterC KieslingC-H KimD Y KimK-H KimY-K KimH KindoP KodyšT KogaS KohaniK KojimaT KonnoA KorobovS KorparE KovalenkoR KowalewskiT M G KraetzschmarP KrižanP KrokovnyR KumarK KumaraT KunigoA KuzminY-J KwonS LacapraraT LamL LanceriJ S LangeM LaurenzaK LautenbachR LeboucherP M LewisC LiL K LiJ LibbyK LieretZ LiptakQ Y LiuD LiventsevS LongoA LozarT LueckC LyuM MaggioraR MaitiR ManfrediE ManoniS MarcelloC MarinasL MartelA MartiniT MartinovL MassaccesiM MasudaK MatsuokaS K MauryaJ A McKennaM MerolaF MetznerM MilesiC MillerK MiyabayashiR MizukN Molina-GonzalezS MonetaH-G MoserM MrvarR MussaI NakamuraM NakaoY NakazawaA Narimani CharanM NarukiZ NatkaniecA NatochiiL NayakM NayakG NazaryanN K NisarS OgawaH OnoY OnukiP OskinA PaladinoA PantaE PaoloniS PardiH ParkS-H ParkB PaschenA PasseriS PaulT K PedlarI PeruzziR PeschkeR PestotnikM PiccoloL E PiilonenP L M Podesta-LermaT PodobnikS PokharelL PolatC PrazS PrellE PrencipeM T PrimH PurwarN RadS RaizA Ramirez MoralesM ReifS ReiterM RemnevI Ripp-BaudotG RizzoS H RobertsonJ M RoneyA RostomyanN RoutG RussoD A SandersS SandilyaA SangalL SanteljY SatoV SavinovB ScavinoJ SchuelerC SchwandaY SeinoA SelceK SenyoJ SerranoM E SeviorC SfientiC P ShenX D ShiT ShillingtonA SibidanovJ B SinghJ SkorupaR J SobieA SofferE SolovievaS SpataroM StaričS StefkovaZ S StottlerR StroiliY SueM SumihamaK SumisawaW SutcliffeS Y SuzukiH SvidrasM TakizawaK TanidaH TanigawaF TenchiniA ThallerR TiwaryD TonelliE TorassaN ToutounjiK TrabelsiM UchidaI UedaY UematsuT UglovK UngerY UnnoK UnoS UnoY UshirodaS E VahsenR van TonderG S VarnerA VinokurovaL VitaleV VobbilisettiH M WakelingE WangM-Z WangA WarburtonS WatanukiM WelschC WesselE WonX P XuB D YabsleyS YamadaW YanS B YangH YeJ YeltonJ H YinY M YookK YoshiharaC Z YuanL ZaniY ZhangX Y ZhouV I ZhukovaR ŽlebčíkBelle II Collaboration

Observation of e^{+}e^{-}→ωχ_{bJ}(1P) and Search for X_{b}→ωϒ(1S) at sqrt[s] near 10.75 GeV

I Adachi et al. Phys Rev Lett. .

Abstract

We study the processes e^{+}e^{-}→ωχ_{bJ}(1P) (J=0, 1, or 2) using samples at center-of-mass energies sqrt[s]=10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, and 4.7 fb^{-1} of integrated luminosity, respectively. These data were collected with the Belle II detector during special operations of the SuperKEKB collider above the ϒ(4S) resonance. We report the first observation of ωχ_{bJ}(1P) signals at sqrt[s]=10.745 GeV. By combining Belle II data with Belle results at sqrt[s]=10.867 GeV, we find energy dependencies of the Born cross sections for e^{+}e^{-}→ωχ_{b1,b2}(1P) to be consistent with the shape of the ϒ(10753) state. These data indicate that the internal structures of the ϒ(10753) and ϒ(10860) states may differ. Including data at sqrt[s]=10.653 GeV, we also search for the bottomonium equivalent of the X(3872) state decaying into ωϒ(1S). No significant signal is observed for masses between 10.45 and 10.65 GeV/c^{2}.

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