TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Garcia Martin, L. M.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Valls, P.
AU  - Sanchez Mayordomo, C.
PY  - 2017
DA  - 2017//
TI  - Observation of B-c(+) -> (DK+)-K-0 Decays
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 111803
EP  - 9pp
VL  - 118
IS  - 11
PB  - Amer Physical Soc
AB  - Using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb(-1), recorded by the LHCb detector at center-of-mass energies of 7 and 8 TeV, the B-c(+) -> (DK+)-K-0 decay is observed with a statistical significance of 5.1 standard deviations. By normalizing to B-c(+) -> (D) over bar (0)pi(+) decays, a measurement of the branching fraction multiplied by the production rates for B-c(+) relative to B+ mesons in the LHCb acceptance is obtained, R-D0K = (f(c)/f(u)) x B(B-c(+) -> (DK+)-K-0) = (9.3(-2.5)(+2.8) +/- 0.6) x 10(-7), where the first uncertainty is statistical and the second is systematic. This decay is expected to proceed predominantly through weak annihilation and penguin amplitudes, and is the first B-c(+) decay of this nature to be observed.
SN  - 0031-9007
UR  - http://arxiv.org/abs/1701.01856
UR  - https://doi.org/10.1103/PhysRevLett.118.111803
DO  - 10.1103/PhysRevLett.118.111803
LA  - English
N1  - WOS:000396267100005
ID  - LHCbCollaborationAaij_etal2017
ER  -