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2021-01-05 09:46 |
Observation of the $B_s^0 \rightarrow D^{\ast \pm} D^{\mp}$ decay
/ LHCb Collaboration
A search for the $B^0_s \!\rightarrow D^{*\pm} D^\mp$ decay is performed using proton-proton collision data at centre-of-mass energies of $7$, $8$ and $13\,\text{TeV}$ collected by the LHCb experiment, corresponding to an integrated luminosity of $9\,\text{fb}^{-1}$. The decay is observed with a high significance and its branching fraction relative to the $B^0 \!\rightarrow D^{*\pm} D^\mp$ decay is measured to be \begin{align*} \frac{\mathcal{B}(B_s^0 \rightarrow D^{\ast \pm} D^{\mp}) }{\mathcal{B}(B^0 \rightarrow D^{\ast \pm} D^{\mp}) } = 0.137 \pm 0.017 \pm 0.002 \pm 0.006 \,, \end{align*} where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the $B_s^0$ and $B^0$ hadronisation fractions..
arXiv:2012.11341; LHCb-PAPER-2020-037; CERN-EP-2020-230.-
2021-03-09 - 19 p.
- Published in : JHEP 2103 (2021) 099
Article from SCOAP3: PDF; Fulltext: 2012.11341 - PDF; LHCb-PAPER-2020-037 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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2021-01-04 13:51 |
Measurement of CP violation in the decay $B^{+} \rightarrow K^{+} \pi^{0}$
/ LHCb Collaboration
A measurement of direct CP violation in the decay $B^{+} \rightarrow K^{+} \pi^{0}$ is reported using a data sample corresponding to an integrated luminosity of 5.4 $\textrm{fb}^{-1}$, collected with the LHCb experiment at a center-of-mass energy of $\sqrt{s}=13$ TeV. The CP asymmetry is measured to be $0.025 \pm 0.015 \pm 0.006 \pm 0.003$, where the uncertainties are statistical, systematic, and due to an external input, respectively. [...]
arXiv:2012.12789; LHCb-PAPER-2020-040; CERN-EP-2020-242.-
2021-03-02 - 11 p.
- Published in : Phys. Rev. Lett. 126 (2021) 091802
Article from SCOAP3: PDF; Fulltext: 2012.12789 - PDF; LHCb-PAPER-2020-040_arXiv - PDF; Related data file(s): ZIP; supplementary information: ZIP;
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