The first observation of the decay B0s→Dbar0K−π+ is reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb−1 of pp collisions, collected with the LHCb detector. The branching fraction relative to that of the topologically similar decay B0→Dbar0π+π− is measured to be ℬ(B0s→Dbar0K−π+)/ℬ(B0→Dbar0π+π−)=1.18±0.05(stat)±0.12(syst). In addition, the relative branching fraction of the decay B0→Dbar0K+π− is measured to be ℬ(B0→Dbar0K+π−)/ℬ(B0→Dbar0π+π−)=0.106±0.007(stat)±0.008(syst).
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Titolo: | Measurement of the branching fractions of the decays B-s(0) -> (D)over-bar(0)K(-) pi(+) and B-0 -> (D)over-bar(0)K(+) pi(-) |
Autori: | |
Data di pubblicazione: | 2013 |
Rivista: | |
Abstract: | The first observation of the decay B0s→Dbar0K−π+ is reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb−1 of pp collisions, collected with the LHCb detector. The branching fraction relative to that of the topologically similar decay B0→Dbar0π+π− is measured to be ℬ(B0s→Dbar0K−π+)/ℬ(B0→Dbar0π+π−)=1.18±0.05(stat)±0.12(syst). In addition, the relative branching fraction of the decay B0→Dbar0K+π− is measured to be ℬ(B0→Dbar0K+π−)/ℬ(B0→Dbar0π+π−)=0.106±0.007(stat)±0.008(syst). |
Handle: | http://hdl.handle.net/11567/696052 |
Appare nelle tipologie: | 01.01 - Articolo su rivista |
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