Observation of the Bc meson in pp¯ collisions at √s = 1.8 TeV

Published

Journal Article

We have observed bottom-charm mesons via the decay mode B±c → J/ψl±ν in 1.8 TeV pp¯ collisions using the CDF detector at the Fermilab Tevatron. A fit of background and signal contributions to the J/ψl mass distribution yielded 20.4+6.2-5.5 events from Bc mesons. A fit to the same distribution with background alone was rejected at the level of 4.8 standard deviations. We measured the B+c mass to be 6.40 ± 0.39(stat) ± 0.13(syst) GeV/c2 and the B+c lifetime to be 0.46+0.18-0.16(stat) ± 0.03(syst)ps. Our measured yield (production cross section times branching ratio) for B±c → J/ψl+ν relative to that for B+ → J/ψK+ is 0.132+0.041-0.037(stat) ± 0.031(syst)+0.032-0.020(lifetime). © 1998 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Abe, F; Akimoto, H; Akopian, A; Albrow, MG; Amadon, A; Amendolia, SR; Amidei, D; Antos, J; Aota, S; Apollinari, G; Arisawa, T; Asakawa, T; Ashmanskas, W; Atac, M; Azzi-Bacchetta, P; Bacchetta, N; Bagdasarov, S; Bailey, MW; de Barbaro, P; Barbaro-Galtieri, A; Barnes, VE; Barnett, BA; Barone, M; Bauer, G; Baumann, T; Bedeschi, F; Behrends, S; Belforte, S; Bellettini, G; Bellinger, J; Benjamin, D; Bensinger, J; Beretvas, A; Berge, JP; Berryhill, J; Bertolucci, S; Bettelli, S; Bevensee, B; Bhatti, A; Biery, K; Bigongiari, C; Binkley, M; Bisello, D; Blair, RE; Blocker, C; Blusk, S; Bodek, A; Bokhari, W; Bolla, G; Bonushkin, Y; Bortoletto, D; Boudreau, J; Breccia, L; Bromberg, C; Bruner, N; Brunetti, R; Buckley-Geer, E; Budd, HS; Burkett, K; Busetto, G; Byon-Wagner, A; Byrum, KL; Campbell, M; Caner, A; Carithers, W; Carlsmith, D; Cassada, J; Castro, A; Cauz, D; Cerri, A; Chang, PS; Chang, PT; Chao, HY; Chapman, J; Cheng, MT; Chertok, M; Chiarelli, G; Chiou, CN; Chlebana, F; Christofek, L; Chu, ML; Cihangir, S; Clark, AG; Cobal, M; Cocca, E; Contreras, M; Conway, J; Cooper, J; Cordelli, M; Costanzo, D; Couyoumtzelis, C; Cronin-Hennessy, D; Culbertson, R; Dagenhart, D; Daniels, T; De Jongh, F; Dell’agnello, S; Dell’orso, M; Demina, R; Demortier, L

Published Date

  • January 1, 1998

Published In

Volume / Issue

  • 81 / 12

Start / End Page

  • 2432 - 2437

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/PhysRevLett.81.2432

Citation Source

  • Scopus