Measurements of B(c)(+) production and mass are performed with the decay mode B(c)(+)→J/ψπ(+) using 0.37 fb(-1) of data collected in pp collisions at √[s]=7 TeV by the LHCb experiment. The ratio of the production cross section times branching fraction between the B(c)(+)→J/ψπ(+) and the B(+)→J/ψK(+) decays is measured to be (0.68±0.10(stat)±0.03(syst)±0.05(lifetime))% for B(c)(+) and B(+) mesons with transverse momenta p(T)>4 GeV/c and pseudorapidities 2.5<η<4.5. The B(c)(+) mass is directly measured to be 6273.7±1.3(stat)±1.6(syst) MeV/c(2), and the measured mass difference with respect to the B(+) meson is M(B(c)(+))-M(B(+))=994.6±1.3(stat)±0.6(syst) MeV/c(2).
Measurements of B(c)(+) production and mass are performed with the decay mode B(c)(+)→J/ψπ(+) using 0.37 fb(-1) of data collected in pp collisions at √[s]=7 TeV by the LHCb experiment. The ratio of the production cross section times branching fraction between the B(c)(+)→J/ψπ(+) and the B(+)→J/ψK(+) decays is measured to be (0.68±0.10(stat)±0.03(syst)±0.05(lifetime))% for B(c)(+) and B(+) mesons with transverse momenta p(T)>4 GeV/c and pseudorapidities 2.5<η<4.5. The B(c)(+) mass is directly measured to be 6273.7±1.3(stat)±1.6(syst) MeV/c(2), and the measured mass difference with respect to the B(+) meson is M(B(c)(+))-M(B(+))=994.6±1.3(stat)±0.6(syst) MeV/c(2).
Authors: R Aaij; B Adeva; M Adinolfi; A Affolder; Z Ajaltouni; J Albrecht; F Alessio; M Alexander; S Ali; G Alkhazov; P Alvarez Cartelle; A A Alves; S Amato; S Amerio; Y Amhis; L Anderlini; J Anderson; R Andreassen; M Andreotti; J E Andrews; R B Appleby; O Aquines Gutierrez; F Archilli; A Artamonov; M Artuso; E Aslanides; G Auriemma; M Baalouch; S Bachmann; J J Back; A Badalov; V Balagura; W Baldini; R J Barlow; C Barschel; S Barsuk; W Barter; V Batozskaya; Th Bauer; A Bay; J Beddow; F Bedeschi; I Bediaga; S Belogurov; K Belous; I Belyaev; E Ben-Haim; G Bencivenni; S Benson; J Benton; A Berezhnoy; R Bernet; M-O Bettler; M van Beuzekom; A Bien; S Bifani; T Bird; A Bizzeti; P M Bjørnstad; T Blake; F Blanc; J Blouw; S Blusk; V Bocci; A Bondar; N Bondar; W Bonivento; S Borghi; A Borgia; M Borsato; T J V Bowcock; E Bowen; C Bozzi; T Brambach; J van den Brand; J Bressieux; D Brett; M Britsch; T Britton; N H Brook; H Brown; A Bursche; G Busetto; J Buytaert; S Cadeddu; R Calabrese; O Callot; M Calvi; M Calvo Gomez; A Camboni; P Campana; D Campora Perez; A Carbone; G Carboni; R Cardinale; A Cardini; H Carranza-Mejia; L Carson; K Carvalho Akiba; G Casse; L Castillo Garcia; M Cattaneo; Ch Cauet; R Cenci; M Charles; Ph Charpentier; S-F Cheung; N Chiapolini; M Chrzaszcz; K Ciba; X Cid Vidal; G Ciezarek; P E L Clarke; M Clemencic; H V Cliff; J Closier; C Coca; V Coco; J Cogan; E Cogneras; P Collins; A Comerma-Montells; A Contu; A Cook; M Coombes; S Coquereau; G Corti; I Counts; B Couturier; G A Cowan; D C Craik; M Cruz Torres; S Cunliffe; R Currie; C D'Ambrosio; J Dalseno; P David; P N Y David; A Davis; I De Bonis; K De Bruyn; S De Capua; M De Cian; J M De Miranda; L De Paula; W De Silva; P De Simone; D Decamp; M Deckenhoff; L Del Buono; N Déléage; D Derkach; O Deschamps; F Dettori; A Di Canto; H Dijkstra; S Donleavy; F Dordei; M Dorigo; P Dorosz; A Dosil Suárez; D Dossett; A Dovbnya; F Dupertuis; P Durante; R Dzhelyadin; A Dziurda; A Dzyuba; S Easo; U Egede; V Egorychev; S Eidelman; S Eisenhardt; U Eitschberger; R Ekelhof; L Eklund; I El Rifai; Ch Elsasser; A Falabella; C Färber; C Farinelli; S Farry; D Ferguson; V Fernandez Albor; F Ferreira Rodrigues; M Ferro-Luzzi; S Filippov; M Fiore; M Fiorini; C Fitzpatrick; M Fontana; F Fontanelli; R Forty; O Francisco; M Frank; C Frei; M Frosini; E Furfaro; A Gallas Torreira; D Galli; M Gandelman; P Gandini; Y Gao; J Garofoli; J Garra Tico; L Garrido; C Gaspar; R Gauld; E Gersabeck; M Gersabeck; T Gershon; Ph Ghez; A Gianelle; V Gibson; L Giubega; V V Gligorov; C Göbel; D Golubkov; A Golutvin; A Gomes; H Gordon; M Grabalosa Gándara; R Graciani Diaz; L A Granado Cardoso; E Graugés; G Graziani; A Grecu; E Greening; S Gregson; P Griffith; L Grillo; O Grünberg; B Gui; E Gushchin; Yu Guz; T Gys; C Hadjivasiliou; G Haefeli; C Haen; T W Hafkenscheid; S C Haines; S Hall; B Hamilton; T Hampson; S Hansmann-Menzemer; N Harnew; S T Harnew; J Harrison; T Hartmann; J He; T Head; V Heijne; K Hennessy; P Henrard; J A Hernando Morata; E van Herwijnen; M Heß; A Hicheur; D Hill; M Hoballah; C Hombach; W Hulsbergen; P Hunt; T Huse; N Hussain; D Hutchcroft; D Hynds; V Iakovenko; M Idzik; P Ilten; R Jacobsson; A Jaeger; E Jans; P Jaton; A Jawahery; F Jing; M John; D Johnson; C R Jones; C Joram; B Jost; N Jurik; M Kaballo; S Kandybei; W Kanso; M Karacson; T M Karbach; I R Kenyon; T Ketel; B Khanji; C Khurewathanakul; S Klaver; O Kochebina; I Komarov; R F Koopman; P Koppenburg; M Korolev; A Kozlinskiy; L Kravchuk; K Kreplin; M Kreps; G Krocker; P Krokovny; F Kruse; M Kucharczyk; V Kudryavtsev; K Kurek; T Kvaratskheliya; V N La Thi; D Lacarrere; G Lafferty; A Lai; D Lambert; R W Lambert; E Lanciotti; G Lanfranchi; C Langenbruch; T Latham; C Lazzeroni; R Le Gac; J van Leerdam; J-P Lees; R Lefèvre; A Leflat; J Lefrançois; S Leo; O Leroy; T Lesiak; B Leverington; Y Li; M Liles; R Lindner; C Linn; F Lionetto; B Liu; G Liu; S Lohn; I Longstaff; J H Lopes; N Lopez-March; P Lowdon; H Lu; D Lucchesi; J Luisier; H Luo; E Luppi; O Lupton; F Machefert; I V Machikhiliyan; 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