학술논문

Observation of ηc(2S)→pp¯ and search for X(3872)→pp¯ decays
Document Type
article
Author
R. AaijB. AdevaM. AdinolfiZ. AjaltouniS. AkarJ. AlbrechtF. AlessioM. AlexanderS. AliG. AlkhazovP. Alvarez CartelleA.A. Alves, Jr.S. AmatoS. AmerioY. AmhisL. AnL. AnderliniG. AndreassiM. AndreottiJ.E. AndrewsR.B. ApplebyO. Aquines GutierrezF. ArchilliP. d'ArgentJ. Arnau RomeuA. ArtamonovM. ArtusoE. AslanidesG. AuriemmaM. BaalouchI. BabuschkinS. BachmannJ.J. BackA. BadalovC. BaessoW. BaldiniR.J. BarlowC. BarschelS. BarsukW. BarterV. BatozskayaB. BatsukhV. BattistaA. BayL. BeaucourtJ. BeddowF. BedeschiI. BediagaL.J. BelV. BelleeN. BelloliK. BelousI. BelyaevE. Ben-HaimG. BencivenniS. BensonJ. BentonA. BerezhnoyR. BernetA. BertolinF. BettiM.-O. BettlerM. van BeuzekomS. BifaniP. BilloirT. BirdA. BirnkrautA. BitadzeA. BizzetiT. BlakeF. BlancJ. BlouwS. BluskV. BocciT. BoettcherA. BondarN. BondarW. BoniventoA. BorgheresiS. BorghiM. BorisyakM. BorsatoF. BossuM. BoubdirT.J.V. BowcockE. BowenC. BozziS. BraunM. BritschT. BrittonJ. BrodzickaE. BuchananC. BurrA. BurscheJ. BuytaertS. CadedduR. CalabreseM. CalviM. Calvo GomezP. CampanaD. Campora PerezL. CapriottiA. CarboneG. CarboniR. CardinaleA. CardiniP. CarnitiL. CarsonK. Carvalho AkibaG. CasseL. CassinaL. Castillo GarciaM. CattaneoCh. CauetG. CavalleroR. CenciM. CharlesPh. CharpentierG. ChatzikonstantinidisM. ChefdevilleS. ChenS.-F. CheungV. ChobanovaM. ChrzaszczX. Cid VidalG. CiezarekP.E.L. ClarkeM. ClemencicH.V. CliffJ. ClosierV. CocoJ. CoganE. CognerasV. CogoniL. CojocariuG. CollazuolP. CollinsA. Comerma-MontellsA. ContuA. CookS. CoquereauG. CortiM. CorvoC.M. Costa SobralB. CouturierG.A. CowanD.C. CraikA. CrocombeM. Cruz TorresS. CunliffeR. CurrieC. D'AmbrosioE. Dall'OccoJ. DalsenoP.N.Y. DavidA. DavisO. De Aguiar FranciscoK. De BruynS. De CapuaM. De CianJ.M. De MirandaL. De PaulaP. De SimoneC.-T. DeanD. DecampM. DeckenhoffL. Del BuonoM. DemmerD. DerkachO. DeschampsF. DettoriB. DeyA. Di CantoH. DijkstraF. DordeiM. DorigoA. Dosil SuárezA. DovbnyaK. DreimanisL. DufourG. DujanyK. DungsP. DuranteR. DzhelyadinA. DziurdaA. DzyubaN. DéléageS. EasoU. EgedeV. EgorychevS. EidelmanS. EisenhardtU. EitschbergerR. EkelhofL. EklundCh. ElsasserS. ElyS. EsenH.M. EvansT. EvansA. FalabellaN. FarleyS. FarryR. FayD. FazziniD. FergusonV. Fernandez AlborF. FerrariF. Ferreira RodriguesM. Ferro-LuzziS. FilippovM. FioreM. FioriniM. FirlejC. FitzpatrickT. FiutowskiF. FleuretK. FohlM. FontanaF. FontanelliD.C. ForshawR. FortyV. Franco LimaM. FrankC. FreiJ. FuE. FurfaroC. FärberA. Gallas TorreiraD. GalliS. GalloriniS. GambettaM. GandelmanP. GandiniY. GaoJ. García PardiñasJ. Garra TicoL. GarridoP.J. GarsedD. GasconC. GasparL. GavardiG. GazzoniD. GerickE. GersabeckM. GersabeckT. GershonPh. GhezS. GianìV. GibsonO.G. GirardL. GiubegaK. GizdovV.V. GligorovD. GolubkovA. GolutvinA. GomesI.V. GorelovC. GottiM. Grabalosa GándaraR. Graciani DiazL.A. Granado CardosoE. GraugésE. GraveriniG. GrazianiA. GrecuP. GriffithL. GrilloB.R. Gruberg CazonO. GrünbergE. GushchinYu. GuzT. GysC. GöbelT. HadavizadehC. HadjivasiliouG. HaefeliC. HaenS.C. HainesS. HallB. HamiltonX. HanS. Hansmann-MenzemerN. HarnewS.T. HarnewJ. HarrisonM. HatchJ. HeT. HeadA. HeisterK. HennessyP. HenrardL. HenryJ.A. Hernando MorataE. van HerwijnenM. HeßA. HicheurD. HillC. HombachW. HulsbergenT. HumairM. HushchynN. HussainD. HutchcroftM. IdzikP. IltenR. JacobssonA. JaegerJ. JalochaE. JansA. JawaheryM. JohnD. JohnsonC.R. JonesC. JoramB. JostN. JurikS. KandybeiW. KansoM. KaracsonJ.M. KariukiS. KarodiaM. KeckeM. KelseyI.R. KenyonM. KenzieT. KetelE. KhairullinB. KhanjiC. KhurewathanakulT. KirnS. KlaverK. KlimaszewskiS. KoliievM. KolpinI. KomarovR.F. KoopmanP. KoppenburgA. KozachukM. KozeihaL. KravchukK. KreplinM. KrepsP. KrokovnyF. KruseW. KrzemienW. KucewiczM. KucharczykV. KudryavtsevA.K. KuonenK. KurekT. KvaratskheliyaD. LacarrereG. LaffertyA. LaiD. LambertG. LanfranchiC. LangenbruchB. LanghansT. LathamC. LazzeroniR. Le GacJ. van LeerdamJ.-P. LeesA. LeflatJ. LefrançoisR. LefèvreF. LemaitreE. Lemos CidO. LeroyT. LesiakB. LeveringtonY. LiT. LikhomanenkoR. LindnerC. LinnF. LionettoB. LiuX. LiuD. LohI. LongstaffJ.H. LopesD. LucchesiM. Lucio MartinezH. LuoA. LupatoE. LuppiO. LuptonA. LusianiX. LyuF. MachefertF. MaciucO. MaevK. MaguireS. MaldeA. MalininT. MaltsevG. MancaG. MancinelliP. ManningJ. MaratasJ.F. MarchandU. MarconiC. Marin BenitoP. MarinoJ. MarksG. MartellottiM. MartinM. MartinelliD. Martinez SantosF. Martinez VidalD. Martins TostesL.M. MassacrierA. MassafferriR. MatevA. MathadZ. MatheC. MatteuzziA. MauriB. MaurinA. MazurovM. McCannJ. McCarthyA. McNabR. McNultyB. MeadowsF. MeierM. MeissnerD. MelnychukM. MerkA. MerliE. MichielinD.A. MilanesM.-N. MinardD.S. MitzelJ. Molina RodriguezI.A. MonroyS. MonteilM. MorandinP. MorawskiA. MordàM.J. MorelloJ. MoronA.B. MorrisR. MountainF. MuheimM. MulderM. MussiniD. MüllerJ. MüllerK. MüllerV. MüllerP. NaikT. NakadaR. NandakumarA. NandiI. NastevaM. NeedhamN. NeriS. NeubertN. NeufeldM. NeunerA.D. NguyenC. Nguyen-MauS. NieswandR. NietN. NikitinT. NikodemA. NovoselovD.P. O'HanlonA. Oblakowska-MuchaV. ObraztsovS. OgilvyR. OldemanC.J.G. OnderwaterJ.M. Otalora GoicocheaA. OttoP. OwenA. OyangurenP.R. PaisA. PalanoF. PalomboM. PalutanJ. PanmanA. PapanestisM. PappagalloL.L. PappalardoC. PappenheimerW. ParkerC. ParkesG. PassalevaG.D. PatelM. PatelC. PatrignaniA. PearceA. PellegrinoG. PensoM. Pepe AltarelliS. PerazziniP. PerretL. PescatoreK. PetridisA. PetroliniA. PetrovM. PetruzzoE. Picatoste OlloquiB. PietrzykM. PikiesD. PinciA. PistoneA. PiucciS. PlayferM. Plo CasasusT. PoikelaF. PolciA. PoluektovI. PolyakovE. PolycarpoG.J. PomeryA. PopovD. PopovB. PopoviciC. PotteratE. PriceJ.D. PriceJ. PrisciandaroA. PritchardC. ProuveV. PugatchA. Puig NavarroG. PunziW. QianR. QuaglianiB. RachwalJ.H. RademackerM. RamaM. Ramos PernasM.S. RangelI. RaniukG. RavenF. RediS. ReichertA.C. dos ReisC. Remon AlepuzV. RenaudinS. RicciardiS. RichardsM. RihlK. RinnertV. Rives MolinaP. RobbeA.B. RodriguesE. RodriguesJ.A. Rodriguez LopezP. Rodriguez PerezA. RogozhnikovS. RoiserV. RomanovskiyA. Romero VidalJ.W. RonayneM. RotondoM.S. RudolphT. RufP. Ruiz VallsJ.J. Saborido SilvaE. SadykhovN. SagidovaB. SaittaV. Salustino GuimaraesC. Sanchez MayordomoB. Sanmartin SedesR. SantacesariaC. Santamarina RiosM. SantimariaE. SantovettiA. SartiC. SatrianoA. SattaD.M. SaundersD. SavrinaS. SchaelM. SchellenbergM. SchillerH. SchindlerM. SchluppM. SchmellingT. SchmelzerB. SchmidtO. SchneiderA. SchopperK. SchubertM. SchubigerM.-H. SchuneR. SchwemmerB. SciasciaA. SciubbaA. SemennikovA. SergiN. SerraJ. SerranoL. SestiniP. SeyfertM. ShapkinI. ShapovalY. ShcheglovT. ShearsL. ShekhtmanV. ShevchenkoA. ShiresB.G. SiddiR. Silva CoutinhoL. Silva de OliveiraG. SimiM. SirendiN. SkidmoreT. SkwarnickiE. SmithI.T. SmithJ. SmithM. SmithH. SnoekM.D. SokoloffF.J.P. SolerD. SouzaB. Souza De PaulaB. SpaanP. SpradlinS. SridharanF. StagniM. StahlS. StahlP. StefkoS. StefkovaO. SteinkampS. StemmleO. StenyakinS. StevensonS. StoicaS. StoneB. StoraciS. StrackaM. StraticiucU. StraumannL. SunW. SutcliffeK. SwientekV. SyropoulosM. SzczekowskiT. SzumlakS. T'JampensA. TayduganovT. TekampeG. TellariniF. TeubertC. ThomasE. ThomasJ. van TilburgV. TisserandM. TobinS. TolkL. TomassettiD. TonelliS. Topp-JoergensenF. TorielloE. TournefierS. TourneurK. TrabelsiM. TraillM.T. TranM. TreschA. TrisovicA. TsaregorodtsevP. TsopelasA. TullyN. TuningA. UklejaA. UstyuzhaninU. UwerC. VaccaV. VagnoniS. ValatG. ValentiA. VallierR. Vazquez GomezP. Vazquez RegueiroS. VecchiM. van VeghelJ.J. VelthuisM. VeltriG. VenezianoA. VenkateswaranM. VernetM. VesterinenB. ViaudD. VieiraM. Vieites DiazX. Vilasis-CardonaV. VolkovA. VollhardtB. VonekiD. VoongA. VorobyevV. VorobyevC. VoßJ.A. de VriesC. Vázquez SierraR. WaldiC. WallaceR. WallaceJ. WalshJ. WangD.R. WardH.M. WarkN.K. WatsonD. WebsdaleA. WeidenM. WhiteheadJ. WichtG. WilkinsonM. WilkinsonM. WilliamsM.P. WilliamsT. WilliamsF.F. WilsonJ. WimberleyM. WinnJ. WishahiW. WislickiM. WitekG. WormserS.A. WottonK. WraightS. WrightK. WyllieY. XieZ. XingZ. XuZ. YangH. YinJ. YuX. YuanO. YushchenkoM. ZangoliK.A. ZarebskiM. ZavertyaevL. ZhangY. ZhangA. ZhelezovY. ZhengA. ZhokhovV. ZhukovS. Zucchelli
Source
Physics Letters B, Vol 769, Iss C, Pp 305-313 (2017)
Subject
Physics
QC1-999
Language
English
ISSN
0370-2693
1873-2445
Abstract
The first observation of the decay ηc(2S)→pp¯ is reported using proton–proton collision data corresponding to an integrated luminosity of 3.0 fb−1 recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The ηc(2S) resonance is produced in the decay B+→[cc¯]K+. The product of branching fractions normalised to that for the J/ψ intermediate state, Rηc(2S), is measured to be Rηc(2S)≡B(B+→ηc(2S)K+)×B(ηc(2S)→pp¯)B(B+→J/ψK+)×B(J/ψ→pp¯)=(1.58±0.33±0.09)×10−2, where the first uncertainty is statistical and the second systematic. No signals for the decays B+→X(3872)(→pp¯)K+ and B+→ψ(3770)(→pp¯)K+ are seen, and the 95% confidence level upper limits on their relative branching ratios are found to be RX(3872)