@article{b0be09ad2bb54243a06d862b4d92157d, title = "Observation of $B^+_c \rightarrow J/\psi D_s^+$ and $B^+_c \rightarrow J/\psi D_s^{*+}$ decays", abstract = "The decays $B^+_c \rightarrow J/\psi D_s^+$ and $B^+_c \rightarrow J/\psi D_s^{*+}$ are observed for the first time using a dataset, corresponding to an integrated luminosity of 3$fb^{-1}$, collected by the LHCb experiment in proton-proton collisions at centre-of-mass energies of $\sqrt{s}$=7 and 8 TeV. The statistical significance for both signals is in excess of 9 standard deviations. The following ratios of branching fractions are measured to be $BR(B^+_c \rightarrow J/\psi D_s^+)/BR(B^+_c \rightarrow J/\psi \pi+) = 2.90 \pm 0.57 \pm 0.24$, $BR(B^+_c \rightarrow J/\psi D_s^{*+}) / BR (B^+_c \rightarrow J/\psi D_s^+) = 2.37 \pm 0.56 \pm 0.10$, where the first uncertainties are statistical and the second systematic. The mass of the \Bc meson is measured to be $m_{B^+_c} = 6276.28 \pm 1.44 (stat) \pm 0.36(syst) MeV/c^2$, using the $B^+_c \rightarrow J/\psi D_s^+$ decay mode.", author = "{Abellan Beteta}, C and B Adeva and M Adinolfi and C Adrover and A Affolder and Z Ajaltouni and J Albrecht and F Alessio and M Alexander and S Ali and G Alkhazov and {Alvarez Cartelle}, P and {Alves Jr}, {A A} and S Amato and S Amerio and Y Amhis and L Anderlini and J Anderson and R Andreassen and Appleby, {R B} and {Aquines Gutierrez}, O and F Archilli and A Artamonov and M Artuso and E Aslanides and G Auriemma and S Bachmann and Back, {J J} and C Baesso and V Balagura and W Baldini and Barlow, {R J} and C Barschel and S Barsuk and W Barter and Th Bauer and A Bay and J Beddow and F Bedeschi and I Bediaga and S Belogurov and K Belous and I Belyaev and E Ben-Haim and M Benayoun and G Bencivenni and S Benson and J Benton and A Berezhnoy and R Bernet and Bettler, {M -O} and {van Beuzekom}, M and A Bien and S Bifani and T Bird and A Bizzeti and Bj{\o}rnstad, {P M} and T Blake and F Blanc and J Blouw and S Blusk and V Bocci and A Bondar and N Bondar and W Bonivento and S Borghi and A Borgia and Bowcock, {T J V} and E Bowen and C Bozzi and T Brambach and {van den Brand}, J and J Bressieux and D Brett and M Britsch and T Britton and Brook, {N H} and H Brown and I Burducea and A Bursche and G Busetto and J Buytaert and S Cadeddu and O Callot and M Calvi and {Calvo Gomez}, M and A Camboni and P Campana and {Campora Perez}, D and A Carbone and G Carboni and R Cardinale and A Cardini and H Carranza-Mejia and L Carson and {Carvalho Akiba}, K and G Casse and M Cattaneo and Ch Cauet and M Charles and Ph Charpentier and P Chen and N Chiapolini and M Chrzaszcz and K Ciba and {Cid Vidal}, X and G Ciezarek and Clarke, {P E L} and M Clemencic and Cliff, {H V} and J Closier and C Coca and V Coco and J Cogan and E Cogneras and P Collins and A Comerma-Montells and A Contu and A Cook and M Coombes and S Coquereau and G Corti and B Couturier and Cowan, {G A} and Craik, {D C} and S Cunliffe and R Currie and C D'Ambrosio and P David and David, {P N Y} and A Davis and {De Bonis}, I and {De Bruyn}, K and {De Capua}, S and {De Cian}, M and {De Miranda}, {J M} and {De Paula}, L and {De Silva}, W and {De Simone}, P and D Decamp and M Deckenhoff and {Del Buono}, L and D Derkach and O Deschamps and F Dettori and {Di Canto}, A and H Dijkstra and M Dogaru and S Donleavy and F Dordei and {Dosil Su{\'a}rez}, A and D Dossett and A Dovbnya and F Dupertuis and R Dzhelyadin and A Dziurda and A Dzyuba and S Easo and U Egede and V Egorychev and S Eidelman and {van Eijk}, D and S Eisenhardt and U Eitschberger and R Ekelhof and L Eklund and {El Rifai}, I and Ch Elsasser and D Elsby and A Falabella and C F{\"a}rber and G Fardell and C Farinelli and S Farry and V Fave and D Ferguson and {Fernandez Albor}, V and {Ferreira Rodrigues}, F and M Ferro-Luzzi and S Filippov and M Fiore and C Fitzpatrick and M Fontana and F Fontanelli and R Forty and O Francisco and M Frank and C Frei and M Frosini and S Furcas and E Furfaro and {Gallas Torreira}, A and D Galli and M Gandelman and P Gandini and Y Gao and J Garofoli and P Garosi and {Garra Tico}, J and L Garrido and C Gaspar and R Gauld and E Gersabeck and M Gersabeck and T Gershon and Ph Ghez and V Gibson and Gligorov, {V V} and C G{\"o}bel and D Golubkov and A Golutvin and A Gomes and H Gordon and {Grabalosa G{\'a}ndara}, M and {Graciani Diaz}, R and {Granado Cardoso}, {L A} and E Graug{\'e}s and G Graziani and A Grecu and E Greening and S Gregson and O Gr{\"u}nberg and B Gui and E Gushchin and Yu Guz and T Gys and C Hadjivasiliou and G Haefeli and C Haen and Haines, {S C} and S Hall and T Hampson and S Hansmann-Menzemer and N Harnew and Harnew, {S T} and J Harrison and T Hartmann and J He and V Heijne and K Hennessy and P Henrard and {Hernando Morata}, {J A} and {van Herwijnen}, E and E Hicks and D Hill and M Hoballah and C Hombach and P Hopchev and W Hulsbergen and P Hunt and T Huse and N Hussain and D Hutchcroft and D Hynds and V Iakovenko and M Idzik and P Ilten and R Jacobsson and A Jaeger and E Jans and P Jaton and F Jing and M John and D Johnson and Jones, {C R} and B Jost and M Kaballo and S Kandybei and M Karacson and Karbach, {T M} and Kenyon, {I R} and U Kerzel and T Ketel and A Keune and B Khanji and O Kochebina and I Komarov and Koopman, {R F} and P Koppenburg and M Korolev and A Kozlinskiy and L Kravchuk and K Kreplin and M Kreps and G Krocker and P Krokovny and F Kruse and M Kucharczyk and V Kudryavtsev and T Kvaratskheliya and {La Thi}, {V N} and D Lacarrere and G Lafferty and A Lai and D Lambert and Lambert, {R W} and E Lanciotti and G Lanfranchi and C Langenbruch and T Latham and C Lazzeroni and {Le Gac}, R and {van Leerdam}, J and Lees, {J -P} and R Lef{\`e}vre and A Leflat and J Lefran{\cc}ois and S Leo and O Leroy and T Lesiak and B Leverington and Y Li and {Li Gioi}, L and M Liles and R Lindner and C Linn and B Liu and G Liu and S Lohn and I Longstaff and Lopes, {J H} and {Lopez Asamar}, E and N Lopez-March and H Lu and D Lucchesi and J Luisier and H Luo and F Machefert and Machikhiliyan, {I V} and F Maciuc and O Maev and S Malde and G Manca and G Mancinelli and U Marconi and R M{\"a}rki and J Marks and G Martellotti and A Martens and L Martin and {Mart{\'i}n S{\'a}nchez}, A and M Martinelli and {Martinez Santos}, D and {Martins Tostes}, D and A Massafferri and R Matev and Z Mathe and C Matteuzzi and E Maurice and A Mazurov and J McCarthy and A McNab and R McNulty and B Meadows and F Meier and M Meissner and M Merk and Milanes, {D A} and Minard, {M -N} and {Molina Rodriguez}, J and S Monteil and D Moran and P Morawski and Morello, {M J} and R Mountain and I Mous and F Muheim and K M{\"u}ller and R Muresan and B Muryn and B Muster and P Naik and T Nakada and R Nandakumar and I Nasteva and M Needham and N Neufeld and Nguyen, {A D} and Nguyen, {T D} and C Nguyen-Mau and M Nicol and V Niess and R Niet and N Nikitin and T Nikodem and A Nomerotski and A Novoselov and A Oblakowska-Mucha and V Obraztsov and S Oggero and S Ogilvy and O Okhrimenko and R Oldeman and M Orlandea and {Otalora Goicochea}, {J M} and P Owen and A Oyanguren and Pal, {B K} and A Palano and M Palutan and J Panman and A Papanestis and M Pappagallo and C Parkes and Parkinson, {C J} and G Passaleva and Patel, {G D} and M Patel and Patrick, {G N} and C Patrignani and C Pavel-Nicorescu and {Pazos Alvarez}, A and A Pellegrino and G Penso and {Pepe Altarelli}, M and S Perazzini and Perego, {D L} and {Perez Trigo}, E and {P{\'e}rez-Calero Yzquierdo}, A and P Perret and M Perrin-Terrin and G Pessina and K Petridis and A Petrolini and A Phan and {Picatoste Olloqui}, E and B Pietrzyk and T PilaĆ and D Pinci and S Playfer and {Plo Casasus}, M and F Polci and G Polok and A Poluektov and E Polycarpo and D Popov and B Popovici and C Potterat and A Powell and J Prisciandaro and V Pugatch and {Puig Navarro}, A and G Punzi and W Qian and Rademacker, {J H} and B Rakotomiaramanana and Rangel, {M S} and I Raniuk and N Rauschmayr and G Raven and S Redford and Reid, {M M} and {dos Reis}, {A C} and S Ricciardi and A Richards and K Rinnert and {Rives Molina}, V and {Roa Romero}, {D A} and P Robbe and E Rodrigues and {Rodriguez Perez}, P and S Roiser and V Romanovsky and {Romero Vidal}, A and J Rouvinet and T Ruf and F Ruffini and H Ruiz and {Ruiz Valls}, P and G Sabatino and {Saborido Silva}, {J J} and N Sagidova and P Sail and B Saitta and C Salzmann and {Sanmartin Sedes}, B and M Sannino and R Santacesaria and {Santamarina Rios}, C and E Santovetti and M Sapunov and A Sarti and C Satriano and A Satta and M Savrie and D Savrina and P Schaack and M Schiller and H Schindler and M Schlupp and M Schmelling and B Schmidt and O Schneider and A Schopper and Schune, {M -H} and R Schwemmer and B Sciascia and A Sciubba and M Seco and A Semennikov and K Senderowska and I Sepp and N Serra and J Serrano and P Seyfert and M Shapkin and I Shapoval and P Shatalov and Y Shcheglov and T Shears and L Shekhtman and O Shevchenko and V Shevchenko and A Shires and {Silva Coutinho}, R and T Skwarnicki and Smith, {N A} and E Smith and M Smith and Sokoloff, {M D} and Soler, {F J P} and F Soomro and D Souza and {Souza De Paula}, B and B Spaan and A Sparkes and P Spradlin and F Stagni and S Stahl and O Steinkamp and S Stoica and S Stone and B Storaci and M Straticiuc and U Straumann and Subbiah, {V K} and S Swientek and V Syropoulos and M Szczekowski and P Szczypka and T Szumlak and S T'Jampens and M Teklishyn and E Teodorescu and F Teubert and C Thomas and E Thomas and {van Tilburg}, J and V Tisserand and M Tobin and S Tolk and D Tonelli and S Topp-Joergensen and N Torr and E Tournefier and S Tourneur and Tran, {M T} and M Tresch and A Tsaregorodtsev and P Tsopelas and N Tuning and {Ubeda Garcia}, M and A Ukleja and D Urner and U Uwer and V Vagnoni and G Valenti and {Vazquez Gomez}, R and {Vazquez Regueiro}, P and S Vecchi and Velthuis, {J J} and M Veltri and G Veneziano and M Vesterinen and B Viaud and D Vieira and X Vilasis-Cardona and A Vollhardt and D Volyanskyy and D Voong and A Vorobyev and V Vorobyev and C Vo{\ss} and H Voss and R Waldi and R Wallace and S Wandernoth and J Wang and Ward, {D R} and Watson, {N K} and Webber, {A D} and D Websdale and M Whitehead and J Wicht and J Wiechczynski and D Wiedner and L Wiggers and G Wilkinson and Williams, {M P} and M Williams and Wilson, {F F} and J Wishahi and M Witek and Wotton, {S A} and S Wright and S Wu and K Wyllie and Y Xie and F Xing and Z Xing and Z Yang and R Young and X Yuan and O Yushchenko and M Zangoli and M Zavertyaev and F Zhang and L Zhang and Zhang, {W C} and Y Zhang and A Zhelezov and A Zhokhov and L Zhong and A Zvyagin", year = "2014", month = "1", day = "15", doi = "10.1103/PhysRevD.89.019901", language = "English", volume = "D89", pages = "019901", journal = "Physical Review", issn = "0031-899X", publisher = "American Institute of Physics Publising LLC", number = "1", }