학술논문

Observation of the B0→ρ0ρ0 decay from an amplitude analysis of B0→(π+π−)(π+π−) decays
Document Type
article
Author
R. AaijB. AdevaM. AdinolfiA. AffolderZ. AjaltouniS. AkarJ. AlbrechtF. AlessioM. AlexanderS. AliG. AlkhazovP. Alvarez CartelleA.A. Alves JrS. AmatoS. AmerioY. AmhisL. AnL. AnderliniJ. AndersonM. AndreottiJ.E. AndrewsR.B. ApplebyO. Aquines GutierrezF. ArchilliA. ArtamonovM. ArtusoE. AslanidesG. AuriemmaM. BaalouchS. BachmannJ.J. BackA. BadalovC. BaessoW. BaldiniR.J. BarlowC. BarschelS. BarsukW. BarterV. BatozskayaV. BattistaA. BayL. BeaucourtJ. BeddowF. BedeschiI. BediagaL.J. BelI. BelyaevE. Ben-HaimG. BencivenniS. BensonJ. BentonA. BerezhnoyR. BernetA. BertolinM.-O. BettlerM. van BeuzekomA. BienS. BifaniT. BirdA. BizzetiT. BlakeF. BlancJ. BlouwS. BluskV. BocciA. BondarN. BondarW. BoniventoS. BorghiM. BorsatoT.J.V. BowcockE. BowenC. BozziS. BraunD. BrettM. BritschT. BrittonJ. BrodzickaN.H. BrookA. BurscheJ. BuytaertS. CadedduR. CalabreseM. CalviM. Calvo GomezP. CampanaD. Campora PerezL. CapriottiA. CarboneG. CarboniR. CardinaleA. CardiniP. CarnitiL. CarsonK. Carvalho AkibaR. Casanova MohrG. CanL. CassinaL. Castillo GarciaM. CattaneoCh. CauetG. CavalleroR. CenciM. CharlesPh. CharpentierM. ChefdevilleS. ChenS.-F. CheungN. ChiapoliniM. ChrzaszczX. Cid VidalG. CiezarekP.E.L. ClarkeM. ClemencicH.V. CliffJ. ClosierV. CocoJ. CoganE. CognerasV. CogoniL. CojocariuG. CollazuolP. CollinsA. Comerma-MontellsA. ContuA. CookM. CoombesS. CoquereauG. CortiM. CorvoI. CountsB. CouturierG.A. CowanD.C. CraikA.C. CrocombeM. Cruz TorresS. CunliffeR. CurrieC. D'AmbrosioJ. DalsenoP.N.Y. DavidA. DavisK. De BruynS. De CapuaM. De CianJ.M. De MirandaL. De PaulaW. De SilvaP. De SimoneC.-T. DeanD. DecampM. DeckenhoffL. Del BuonoN. DéléageD. DerkachO. DeschampsF. DettoriB. DeyA. Di CantoF. Di RuscioH. DijkstraS. DonleavyF. DordeiM. DorigoA. Dosil SuárezD. DossettA. DovbnyaK. DreimanisG. DujanyF. DupertuisP. DuranteR. DzhelyadinA. DziurdaA. DzyubaS. EasoU. EgedeV. EgorychevS. EidelmanS. EisenhardtU. EitschbergerR. EkelhofL. EklundI. El RifaiCh. ElsasserS. ElyS. EsenH.M. EvansT. EvansA. FalabellaC. FärberC. FarinelliN. FarleyS. FarryR. FayD. FergusonV. Fernandez AlborF. FerrariF. Ferreira RodriguesM. Ferro-LuzziS. FilippovM. FioreM. FioriniM. FirlejC. FitzpatrickT. FiutowskiP. FolM. FontanaF. FontanelliR. FortyO. FranciscoM. FrankC. FreiM. FrosiniJ. FuE. FurfaroA. Gallas TorreiraD. GalliS. GalloriniS. GambettaM. GandelmanP. GandiniY. GaoJ. García PardiñasJ. GarofoliJ. Garra TicoL. GarridoD. GasconC. GasparU. GastaldiR. GauldL. GavardiG. GazzoniA. GeraciD. GerickE. GersabeckM. GersabeckT. GershonPh. GhezA. GianelleS. GianìV. GibsonL. GiubegaV.V. GligorovC. GöbelD. GolubkovA. GolutvinA. GomesC. GottiM. Grabalosa GándaraR. Graciani DiazL.A. Granado CardosoE. GraugésE. GraveriniG. GrazianiA. GrecuE. GreeningS. GregsonP. GriffithL. GrilloO. GrünbergB. GuiE. GushchinYu. GuzT. GysC. HadjivasiliouG. HaefeliC. HaenS.C. HainesS. HallB. HamiltonT. HampsonX. HanS. Hansmann-MenzemerN. HarnewS.T. HarnewJ. HarrisonJ. HeT. HeadV. HeijneK. HennessyP. HenrardL. HenryJ.A. Hernando MorataE. van HerwijnenM. HeßA. HicheurD. HillM. HoballahC. HombachW. HulsbergenT. HumairN. HussainD. HutchcroftD. HyndsM. IdzikP. IltenR. JacobssonA. JaegerJ. JalochaE. JansA. JawaheryF. JingM. JohnD. JohnsonC.R. JonesC. JoramB. JostN. JurikS. KandybeiW. KansoM. KaracsonT.M. KarbachS. KarodiaM. KelseyI.R. KenyonM. KenzieT. KetelB. KhanjiC. KhurewathanakulS. KlaverK. KlimaszewskiO. KochebinaM. KolpinI. KomarovR.F. KoopmanP. KoppenburgM. KorolevL. KravchukK. KreplinM. KrepsG. KrockerP. KrokovnyF. KruseW. KucewiczM. KucharczykV. KudryavtsevK. KurekT. KvaratskheliyaV.N. La ThiD. LacarrereG. LaffertyA. LaiD. LambertR.W. LambertG. LanfranchiC. LangenbruchB. LanghansT. LathamC. LazzeroniR. Le GacJ. van LeerdamJ.-P. LeesR. LefèvreA. LeflatJ. LefrançoisO. LeroyT. LesiakB. LeveringtonY. LiT. LikhomanenkoM. LilesR. LindnerC. LinnF. LionettoB. LiuS. LohnI. LongstaffJ.H. LopesP. LowdonD. LucchesiH. LuoA. LupatoE. LuppiO. LuptonF. MachefertF. MaciucO. MaevS. MaldeA. MalininG. MancaG. MancinelliP. ManningA. MapelliJ. MaratasJ.F. MarchandU. MarconiC. Marin BenitoP. MarinoR. MärkiJ. MarksG. MartellottiM. MartinelliD. Martinez SantosF. Martinez VidalD. Martins TostesA. MassafferriR. MatevA. MathadZ. MatheC. MatteuzziA. MauriB. MaurinA. MazurovM. McCannJ. McCarthyA. McNabR. McNultyB. MeadowsF. MeierM. MeissnerM. MerkD.A. MilanesM.-N. MinardD.S. MitzelJ. Molina RodriguezS. MonteilM. MorandinP. MorawskiA. MordàM.J. MorelloJ. MoronA.-B. MorrisR. MountainF. MuheimK. MüllerM. MussiniB. MusterP. NaikT. NakadaR. NandakumarI. NastevaM. NeedhamN. NeriS. NeubertN. NeufeldM. NeunerA.D. NguyenT.D. NguyenC. Nguyen-MauV. NiessR. NietN. NikitinT. NikodemA. NovoselovD.P. O'HanlonA. Oblakowska-MuchaV. ObraztsovS. OgilvyO. OkhrimenkoR. OldemanC.J.G. OnderwaterB. Osorio RodriguesJ.M. Otalora GoicocheaA. OttoP. OwenA. OyangurenA. PalanoF. PalomboM. PalutanJ. PanmanA. PapanestisM. PappagalloL.L. PappalardoC. ParkesG. PassalevaG.D. PatelM. PatelC. PatrignaniA. PearceA. PellegrinoG. PensoM. Pepe AltarelliS. PerazziniP. PerretL. PescatoreK. PetridisA. PetroliniE. Picatoste OlloquiB. PietrzykT. PilařD. PinciA. PistoneS. PlayferM. Plo CasasusT. PoikelaF. PolciA. PoluektovI. PolyakovE. PolycarpoA. PopovD. PopovB. PopoviciC. PotteratE. PriceJ.D. PriceJ. PrisciandaroA. PritchardC. ProuveV. PugatchA. Puig NavarroG. PunziW. QianR. QuaglianiB. RachwalJ.H. RademackerB. RakotomiaramananaM. RamaM.S. RangelI. RaniukN. RauschmayrG. RavenF. RediS. ReichertM.M. ReidA.C. dos ReisS. RicciardiS. RichardsM. RihlK. RinnertV. Rives MolinaP. RobbeA.B. RodriguesE. RodriguesJ.A. Rodriguez LopezP. Rodriguez PerezS. RoiserV. RomanovskyA. Romero VidalM. RotondoJ. RouvinetT. RufH. RuizP. Ruiz VallsJ.J. Saborido SilvaN. SagidovaP. SailB. SaittaV. Salustino GuimaraesC. Sanchez MayordomoB. Sanmartin SedesR. SantacesariaC. Santamarina RiosE. SantovettiA. SartiC. SatrianoA. SattaD.M. SaundersD. SavrinaM. SchillerH. SchindlerM. SchluppM. SchmellingB. SchmidtO. SchneiderA. SchopperM.-H. SchuneR. SchwemmerB. SciasciaA. SciubbaA. SemennikovI. SeppN. SerraJ. SerranoL. SestiniP. SeyfertM. ShapkinI. ShapovalY. ShcheglovT. ShearsL. ShekhtmanV. ShevchenkoA. ShiresR. Silva CoutinhoG. SimiM. SirendiN. SkidmoreI. SkillicornT. SkwarnickiN.A. SmithE. SmithJ. SmithM. SmithH. SnoekM.D. SokoloffF.J.P. SolerF. SoomroD. SouzaB. Souza De PaulaB. SpaanP. SpradlinS. SridharanF. StagniM. StahlS. StahlO. SteinkampO. StenyakinF. SterpkaS. StevensonS. StoicaS. StoneB. StoraciS. StrackaM. StraticiucU. StraumannR. StroiliL. SunW. SutcliffeK. SwientekS. SwientekV. SyropoulosM. SzczekowskiP. SzczypkaT. SzumlakS. T'JampensM. TeklishynG. TellariniF. TeubertC. ThomasE. ThomasJ. van TilburgV. TisserandM. TobinJ. ToddS. TolkL. TomassettiD. TonelliS. Topp-JoergensenN. TorrE. TournefierS. TourneurK. TrabelsiM.T. TranM. TreschA. TrisovicA. TsaregorodtsevP. TsopelasN. TuningA. UklejaA. UstyuzhaninU. UwerC. VaccaV. VagnoniG. ValentiA. VallierR. Vazquez GomezP. Vazquez RegueiroC. Vázquez SierraS. VecchiJ.J. VelthuisM. VeltriG. VenezianoM. VesterinenJ.V. Viana BarbosaB. ViaudD. VieiraM. Vieites DiazX. Vilasis-CardonaA. VollhardtD. VolyanskyyD. VoongA. VorobyevV. VorobyevC. VoßJ.A. de VriesR. WaldiC. WallaceR. WallaceJ. WalshS. WandernothJ. WangD.R. WardN.K. WatsonD. WebsdaleA. WeidenM. WhiteheadD. WiednerG. WilkinsonM. WilkinsonM. WilliamsM.P. WilliamsF.F. WilsonJ. WimberleyJ. WishahiW. WislickiM. WitekG. WormserS.A. WottonS. WrightK. WyllieY. XieZ. XuZ. YangX. YuanO. YushchenkoM. ZangoliM. ZavertyaevL. ZhangY. ZhangA. ZhelezovA. ZhokhovL. Zhong
Source
Physics Letters B, Vol 747, Iss C, Pp 468-478 (2015)
Subject
Physics
QC1-999
Language
English
ISSN
0370-2693
1873-2445
Abstract
Proton–proton collision data recorded in 2011 and 2012 by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb−1, are analysed to search for the charmless B0→ρ0ρ0 decay. More than 600 B0→(π+π−)(π+π−) signal decays are selected and used to perform an amplitude analysis, under the assumption of no CP violation in the decay, from which the B0→ρ0ρ0 decay is observed for the first time with 7.1 standard deviations significance. The fraction of B0→ρ0ρ0 decays yielding a longitudinally polarised final state is measured to be fL=0.745−0.058+0.048(stat)±0.034(syst). The B0→ρ0ρ0 branching fraction, using the B0→ϕK⁎(892)0 decay as reference, is also reported as B(B0→ρ0ρ0)=(0.94±0.17(stat)±0.09(syst)±0.06(BF))×10−6.