Observation and properties of the orbitally excited B_(s2)() meson

• Published in: Physical review letters 2008-02, Vol.100 (8), p.082002-082002
• Main Authors: Abazov, V M, Abbott, B, Abolins, M, Acharya, B S, Adams, M, Adams, T, Aguilo, E, Ahn, S H, Ahsan, M, Alexeev, G D, Alkhazov, G, Alton, A, Alverson, G, Alves, G A, Anastasoaie, M, Ancu, L S, Andeen, T, Anderson, S, Andrieu, B, Anzelc, M S, Arnoud, Y, Arov, M, Arthaud, M, Askew, A, Asman, B, Assis Jesus, A C S, Atramentov, O, Autermann, C, Avila, C, Ay, C, Badaud, F, Baden, A, Bagby, L, Baldin, B, Bandurin, D V, Banerjee, S, Banerjee, P, Barberis, E, Barfuss, A-F, Bargassa, P, Baringer, P, Barreto, J, Bartlett, J F, Bassler, U, Bauer, D, Beale, S, Bean, A, Begalli, M, Begel, M, Belanger-Champagne, C, Bellantoni, L, Bellavance, A, Benitez, J A, Beri, S B, Bernardi, G, Bernhard, R, Bertram, I, Besançon, M, Beuselinck, R, Bezzubov, V A, Bhat, P C, Bhatnagar, V, Biscarat, C, Blazey, G, Blekman, F, Blessing, S, Bloch, D, Bloom, K, Boehnlein, A, Boline, D, Bolton, T A, Borissov, G, Bose, T, Brandt, A, Brock, R, Brooijmans, G, Bross, A, Brown, D, Buchanan, N J, Buchholz, D, Buehler, M, Buescher, V, Bunichev, S, Burdin, S, Burke, S, Burnett, T H, Buszello, C P, Butler, J M, Calfayan, P, Calvet, S, Cammin, J, Carvalho, W, Casey, B C K, Cason, N M, Castilla-Valdez, H, Chakrabarti, S, Chakraborty, D, Chan, K M, Chan, K, Chandra, A
• Format: Article
• Language: English
• Subjects: B PLUS MESONS; GEV RANGE 01-10; High Energy Physics - Experiment; KAONS MINUS; PARTICLE DECAY; Physics; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S STATES
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.100.082002

We report the direct observation of the excited L=1 state B_(s2)(*) in fully reconstructed decays to B+K-. The mass of the B_(s2)(*) meson is measured to be 5839.6+/-1.1(stat)+/-0.7(syst) MeV/c(2), and its production rate relative to the B+ meson is measured to be [1.15+/-0.23(stat)+/-0.13(syst)]%.