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M.Fitzpatrick C.Fontana M.Fontanelli F.Forty R.Francisco O.Frank M.Frei C.Frosini M.Furfaro E.Gallas Torreira A.Galli D.Gandelman M.Gandini P.Gao Y.Garofoli J.Garosi P.Garra Tico J.Garrido L.Gaspar C.Gauld R.Gersabeck E.Gersabeck M.Gershon T.Ghez Ph.Gibson V.Giubega L.Gligorov V.V.Göbel C.Golubkov D.Golutvin A.Gomes A.Gorbounov P.Gordon H.Grabalosa Gándara M.Graciani Diaz R.Granado Cardoso L.A.Graugés E.Graziani G.Grecu A.Greening E.Gregson S.Griffith P.Grünberg O.Gui B.Gushchin E.Guz Yu.Gys T.Hadjivasiliou C.Haefeli G.Haen C.Haines S.C.Hall S.Hamilton B.Hampson T.Hansmann-Menzemer S.Harnew N.Harnew S.T.Harrison J.Hartmann T.He J.Head T.Heijne V.Hennessy K.Henrard P.Hernando Morata J.A.Van Herwijnen E.Heß M.Hicheur A.Hicks E.Hill D.Hoballah M.Hombach C.Hulsbergen W.Hunt P.Huse T.Hussain N.Hutchcroft D.Hynds D.Iakovenko V.Idzik M.Ilten P.Jacobsson R.Jaeger A.Jans E.Jaton P.Jawahery A.Jing F.John M.Johnson D.Jones C.R.Joram C.Jost B.Kaballo M.Kandybei S.Kanso W.Karacson M.Karbach 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P.Stagni F.Stahl S.Steinkamp O.Stevenson S.Stoica S.Stone S.Storaci B.Straticiuc M.Straumann U.Subbiah V.K.Sun L.Sutcliffe W.Swientek S.Syropoulos V.Szczekowski M.Szczypka P.Szilard D.Szumlak T.T'Jampens S.Teklishyn M.Teodorescu E.Teubert F.Thomas C.Thomas E.Van Tilburg J.Tisserand V.Tobin M.Tolk S.Tonelli D.Topp-Joergensen S.Torr N.Tournefier E.Tourneur S.Tran M.T.Tresch M.Tsaregorodtsev A.Tsopelas P.Tuning N.Ubeda Garcia M.Ukleja A.Ustyuzhanin A.Uwer U.Vagnoni V.Valenti G.Vallier A.Vazquez Gomez R.Vazquez Regueiro P.Vázquez Sierra C.Vecchi S.Velthuis J.J.Veltri M.Veneziano G.Vesterinen M.Viaud B.Vieira D.Vilasis-Cardona X.Vollhardt A.Volyanskyy D.Voong D.Vorobyev A.Vorobyev V.Voß C.Voss H.Waldi R.Wallace C.Wallace R.Wandernoth S.Wang J.Ward D.R.Watson N.K.Webber A.D.Websdale D.Whitehead M.Wicht J.Wiechczynski J.Wiedner D.Wiggers L.Wilkinson G.Williams M.P.Williams M.Wilson F.F.Wimberley J.Wishahi J.Wislicki W.Witek M.Wormser G.Wotton S.A.Wright S.Wu S.Wyllie K.Xie Y.Xing Z.Yang Z.Yuan X.Yushchenko O.Zangoli M.Zavertyaev M.Zhang F.Zhang L.Zhang W.C.Zhang Y.Zhelezov A.Zhokhov A.Zhong L.Zvyagin A.2024-07-222024-07-22201311266708http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/17467The decay Bc+ → J/ψK+K -π+ is observed for the first time, using proton-proton collisions collected with the LHCb detector corresponding to an integrated luminosity of 3 fb-1. A signal yield of 78 ± 14 decays is reported with a significance of 6.2 standard deviations. The ratio of the branching fraction of Bc+ → J/ψK +K-π+ decays to that of Bc + → J/ψπ+ decays is measured to be 0:53 ± 0:10 ± 0:05, where the first uncertainty is statistical and the second is systematic. Copyright CERN.EnglishAll Open Access; Hybrid Gold Open AccessArticle10.1007/JHEP11(2013)094