First Observation of a Baryonic B_ s ^ 0 Decay.
| Author |
:
|
|---|---|
| Abstract |
:
We report the first observation of a baryonic B_{s}^{0} decay, B_{s}^{0}→pΛ[over ¯]K^{-}, using proton-proton collision data recorded by the LHCb experiment at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb^{-1}. The branching fraction is measured to be B(B_{s}^{0}→pΛ[over ¯]K^{-})+B(B_{s}^{0}→p[over ¯]ΛK^{+})=[5.46±0.61±0.57±0.50(B)±0.32(f_{s}/f_{d})]×10^{-6}, where the first uncertainty is statistical and the second systematic, the third uncertainty accounts for the experimental uncertainty on the branching fraction of the B^{0}→pΛ[over ¯]π^{-} decay used for normalization, and the fourth uncertainty relates to the knowledge of the ratio of b-quark hadronization probabilities f_{s}/f_{d}. |
| Year of Publication |
:
2017
|
| Journal |
:
Physical review letters
|
| Volume |
:
119
|
| Issue |
:
4
|
| Number of Pages |
:
041802
|
| Date Published |
:
2017
|
| ISSN Number |
:
0031-9007
|
| URL |
:
http://link.aps.org/abstract/PRL/v119/p041802
|
| DOI |
:
10.1103/PhysRevLett.119.041802
|
| Short Title |
:
Phys Rev Lett
|
| Download citation |
