Determination of the branching fractions of B-s(0) -> D-s(-/ ) K--/ and B-0 -> Ds-K

作者：Aaij, R^*; Adeva, B; Adinolfi, M; Affolder, A; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Cartelle, P Alvarez; Alves, A A , Jr; Amato, S; Amerio, S; Amhis, Y; An, L; Anderlini, L; Anderson, J; Andreassen, R; Andreotti, M; Andrews, J E; Appleby, R B; Gutierrez, O Aquines; Archilli, F; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Bachmann, S; Back, J J; Badalov, A; Baesso, C; Baldini, W; Barlow, R J; Barschel, C; Barsuk, S

来源：The Journal of High Energy Physics, 2015, 2015(5): 019.

DOI：10.1007/JHEP05(2015)019

• Hadron-Hadron Scattering
• Branching fraction
• B physics
• Flavor physics

Measurements are presented of the branching fractions of the decays B-s(0) -> D-s(-/ ) K--/ and B-0 -> Ds-K relative to the decays B-s(0) -> D-s(-)pi( ) and B-0 -> D-s(-)pi( ), respectively. The data used correspond to an integrated luminosity of 3.0 fb(-1) of proton-proton collisions. The ratios of branching fractions are
B(B-s(0) -> D-s(-/ ) K--/ )/B(B-s(0) -> D-s(-)pi( )) = 0.0752 /- 0.0015 /- 0.0019
and
B(B-0 -> Ds-K )/B(B-0 -> D-pi( )) = 0.0129 /- 0.0005 /- 0.0008,
where the uncertainties are statistical and systematic, respectively.

• 出版日期2015-5-5
• 单位华中师范大学; 清华大学