6533b832fe1ef96bd129a21b

RESEARCH PRODUCT

Search for direct CP violation in D0→h−h+ modes using semileptonic B decays

E. Perez TrigoR. F. KoopmanC. HaenC. HadjivasiliouP. SaiZ. MatheD. VieiraJonas RademackerJ. BeddowStephen M. StahlD. WiednerA. D. WebberD. A. MilanesS. Topp-joergensenM. KucharczykP. HenrardN. NeufeldF. BlancO. MaevZishuo YangM. PalutanF. KruseMarkus FrankR. LefèvreTomasz SkwarnickiT. GysM. DeckenhoffG. ValentiM. TeklishynO. ShevchenkoM. O. BettlerSebastian BachmannV. V. GligorovA. OyangurenM. KorolevS. EasoP. OwenGianni PensoPavel ShatalovM. PatelG. GrazianiP. N. Y. DavidC. Abellan BetetaH. LuJ. J. Saborido SilvaP. Vazquez RegueiroV. ObraztsovA. SattaN. K. WatsonV. ShevchenkoK. MuellerC. FarinelliUlrik EgedeR. Silva CoutinhoDmitry PopovM. ZangoliA. BorgiaP. Rodriguez PerezStephan EisenhardtAlexander BerezhnoyS. WrightF. ZhangM. D. SokoloffG. MancaO. SchneiderMarco CattaneoM. WitekA. ShiresJ. MccarthyH. LuoR. WallaceR. SantacesariaJulien CoganAgnieszka Oblakowska-muchaC. Pavel-nicorescuE. BowenR. MatevNikolay BondarJ. RouvinetR. McnultyP. KrokovnyCarmelo D'ambrosioD. VolyanskyyCh. CauetO. OkhrimenkoA. BayB. Souza De PaulaC. FitzpatrickK. WyllieB. PietrzykC. SatrianoG. AuriemmaA. ContuX. Cid VidalT. M. KarbachM. MerkD. R. JohnsonS. T. HarnewOlivier LeroyPh. GhezA. SciubbaS. WuU. StraumannC. PotteratL. Del BuonoF. MaciucG. PolokE. HicksOlivier DeschampsC. R. JonesFlavio ArchilliM. TobinT. HampsonVladislav BalaguraJ. Van LeerdamG. RavenD. DecampA. SparkesR. CurrieM. P. WilliamsL. MartinE. Ben-haimO. KochebinaP. SpradlinI. MousKarol HennessyJ. PrisciandaroA. GolutvinE. GreeningTara ShearsM. CharlesS. Hansmann-menzemerC. LazzeroniM. MeissnerS. TolkStephane T'jampensA. LeflatA. PhanS. BelogurovAnton PoluektovJ. MarksM. StraticiucM. AdinolfiS. PerazziniA. JaegerB. K. PalA. SchopperPatrick KoppenburgL. CarsonF. F. JingU. EitschbergerN. TorrLei ZhangP. MorawskiI. LongstaffTjeerd KetelJ. P. LeesE. S. SmithG. A. CowanW. BoniventoD. Martins TostesO. SteinkampR. MountainD. Martinez SantosS. VecchiE. FurfaroSandro CadedduS. LeoC. BozziK. SenderowskaI. El RifaiM. SavrieR. MuresanG. PessinaL. ZhongB. SchmidtB. Sanmartin SedesC. GoebelV. HeijneJ. Garra TicoS. RicciardiS. RedfordRoger FortyA. KeuneE. SantovettiYasmine AmhisH. VossH. Carranza-mejiaR. J. BarlowY.n. GaoG. D. PatelAlbert BurscheK. Carvalho AkibaG. WilkinsonD. MoranAndrei NomerotskiG. PunziR. NandakumarD. DossettA. MartensXavier Vilasis-cardonaAlessio SartiN. TuningS. RoiserChristoph FreiU. KerzelG. SabatinoT. E. LathamT. NikodemF. StagniM. SmithC. FaerberBarbara SciasciaP. NaikE. ThomasE. GersabeckMarta CalviN. Lopez-marchM. H. SchuneU. UwerC. ThomasJ. M. Otalora GoicocheaRobert ApplebyClarissa BaessoJ. Van TilburgS. HallRoland WaldiD. LambertT. BrittonJan BuytaertJ. F. J. Van Den BrandD. SouzaA. ZvyaginP. SzczypkaM. Plo CasasusV. SyropoulosV. K. SubbiahB. MurynL. KravchukAlessandro CardiniJ. M. De MirandaJ. SerranoSimone BifaniR. NietA. VollhardtM. M. ReidJohn BackG. PassalevaN. RauschmayrB. MeadowsF. XingMichael AlexanderJ. LuisierD. LucchesiM. SchmellingJ. PanmanPhilip IltenM. FrosiniR. W. LambertP. JatonX. YuanJ. GarofoliF. DordeillM. J. MorelloJ. HeM. NicolI. R. KenyonM. PappagalloI. RaniukPierluigi CampanaBo LiuGiovanni CarboniA. UklejaIvan BelyaevM. SchluppA. ArtamonovM. VesterinenR. MaerkiG. BusettoB. KhanjiC. Nguyen-mauAntonio PellegrinoI. V. MachikhiliyanK. KreplinSilvia BorghiE. CognerasRoberta CardinaleE. RodriguesV. RomanovskyM. ShapkinV. VagnoniR. LindnerI. NastevaY. ShcheglovL. De PaulaM. LilesN. A. SmithV. NiessN. HussainR. EkelhofL. GarridoC. BarschelMark Richard James WilliamsE. GraugesS. A. WottonE. LanciottiS. CoquereauH. BrownP. GarosiRudolf OldemanT. HartmannM. KaracsonF. MachefertC. HombachS. TourneurWilliam BarterL. Li GioiD. VoongE. PolycarpoTatsuya NakadaG. BencivenniR. Le GacMikhail ZavertyaevThemistocles BowcockA. Gallas TorreiraAngelo CarboneA. RichardsA. Pazos AlvarezJaap VelthuisT. KvaratskheliyaV. Rives MolinaD. UrnerA. PalanoTomasz SzumlakM. SapunovV. Fernandez AlborG. VenezianoMark WhiteheadA. DzyubaP. GandiniS. MaldeM. NeedhamC. ParkesM. CoombesKurt RinnertS. FurcasM. HoballahG. CiezarekF. RuffiniB. PopoviciF. DupertuisP. Alvarez CartelleR. JacobssonIgnacio BediagaB. MusterSandra AmatoK. BelousP. SchaackA. ZhokhovJohannes AlbrechtMalcolm JohnM. GandelmanP. HopchevA. PowellB. RakotomiaramananaC. LinnV. FaveE. FontanelliDavid HutchcroftM. TreschE. GushchinD. L. PeregoO. CallotI. ShapovalG. FardellM. Pepe AltarelliA. KozlinskiyA. DovbnyaMarco GersabeckN. ChiapoliniI. SeppF. MeierG. D. LaffertyM. Perrin-terrinA. Romero VidalF. J. P. SolerS. AliC. J. ParkinsonS. C. HainesA. NovoselovD. LacarrereA. SemennikovD. BrettS. FilippovC. MatteuzziV. VorobyevM. Ferro-luzziYejin ZhangA. McnabRoland BernetE. Picatoste OlloquiS. GregsonS. WandernothM. DogaruM. BritschS. MonteilManuel SchillerGaia LanfranchiP. HuntP. CollinsS. KandybeiC. SalzmannT. PilarA. DziurdaR. Graciani DiazNeville HarnewR. SchwemmerD. ElsbyF. MuheimM. VeltriG. HaefeliValery PugatchA. ZhelezovM. FioreA. PetroliniF. TeubertJ. LefrançoisW. BaldiniD. Van EijkO. YushchenkoA. BienA. A. AlvesT. BrambachI. KomarovR. DzhelyadinA. LaiC. LangenbruchW. C. ZhangMarianna FontanaV. GibsonT. RufY. LiM.-n. MinardA. D. NguyenA. VorobyevS. OgilvyB. GuiS. CunliffeL. WiggersF. F. WilsonI. BurduceaA. GomesL. A. Granado CardosoN. H. BrookJ. H. LopesS. BluskAlessandro CamboniM. Ubeda GarciaM. De CianJ. BlouwAndrea BizzetiZ. XingYu. GuzP. De SimoneB. SpaanJ. WiechczynskiJ. ClosierA. MassafferriJ. A. Hernando MorataRoel AaijA. CookS. OggeroD. FergusonS. PlayferM. KaballoA. Pérez-calero YzquierdoV. IakovenkoH. V. CliffFederico AlessioCh. ElsasserM. T. TranR. GauldT. J. GershonElie AslanidesB. StoraciA.e. BondarD. C. CraikP. M. BjørnstadY. XieThomas BlakeH. SchindlerMarek IdzikP. Ruiz VallsM. Van BeuzekomT. HuseK. De BruynJ. HarrisonRoss D. YoungPh. CharpentierS. SwientekP. TsopelasC. PatrignaniC. AdroverV. TisserandS. FarryGianluigi CassePatrick RobbeE. TeodorescuS. StoicaE. JansM. S. RangelJ. BentonR. Vazquez GomezDenis DerkachF. Ferreira RodriguesW. De SilvaLucio AnderliniOscar De Aguiar FranciscoK. CibaA. PapanestisA. GrecuBernardo AdevaP. ChenP. PerretO. Aquines GutierrezSergey BarsukH. RuizM. OrlandeaB. LeveringtonM. ChrzaszczG. KrockerA. FalabellaBiagio SaittaL. ShekhtmanA. Dosil SuárezVictor CocoA. Puig NavarroI. De BonisD. Campora PerezD. A. Roa RomeroV. KudryavtsevD. R. WardA. A. AffolderJ. AndersonR. PolciHans DijkstraC. GasparJing WangA. MazurovT. BirdA. Comerma-montellsMichal KrepsB. JostC. CocaM. BenayounS. DonleavyMarco ClemencicM. Grabalosa GándaraTh. BauerE. BedeschiM. SecoA. Martín SánchezE. MauriceJ. BressieuxE. DettoriNicola SerraE. TourneflerD. HyndsMarina ArtusoS. AmerioC. Santamarina RiosU. MarconiG. MartellottiE. Lopez AsamarO. GruenbergS. LohnW. D. HulsbergenKonstantinos PetridisF. SoomroG. MancinelliS. BensonG. N. PatrickMario SanninoD. WebsdaleLars EklundJ. Molina RodriguezB. CouturierZiad AjaltouniE. Van HerwijnenP. DavidV. N. La ThiA. TsaregorodtsevP. SeyfertSheldon StoneT. D. NguyenB. ViaudN. SagidovaDmitry GolubkovD. GalliV. BocciD. PinciV. EgorychevD. HillMaurizio MartinelliM. SzczekowskiR. AndreassenS. De CapuaNikolay NikitinD. SavrinaW. QianJ. WichtP. E. L. ClarkeA. C. Dos ReisG. AlkhazovS.i. EidelmanM. Calvo GomezGuoming LiuG. CortiHoward GordonJ. WishahiC. Voss

subject

PhysicsNuclear and High Energy PhysicsParticle physicsMuonMeson010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFlavourCharge (physics)01 natural sciencesLuminosityNuclear physicsDecay time0103 physical sciencesCP violationHigh Energy Physics::ExperimentCharm (quantum number)Nuclear Experiment010306 general physics

description

A search for direct CP violation in D0 -> h- h+ (where h=K or pi) is presented using data corresponding to an integrated luminosity of 1.0 fb^-1 collected in 2011 by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The analysis uses D0 mesons produced in inclusive semileptonic b-hadron decays to the D0 mu X final state, where the charge of the accompanying muon is used to tag the flavour of the D0 meson. The difference in the CP-violating asymmetries between the two decay channels is measured to be Delta A_CP = A_CP(K-K+) - A_CP(pi-pi+) = (0.49 +- 0.30 (stat) +- 0.14 (syst)) % . This result does not confirm the evidence for direct CP violation in the charm sector reported in other analyses.

https://doi.org/10.1016/j.physletb.2013.04.061