Observation of the Decay Xi(-)(b) -> pK(-)K(-)
Decays of the Xi(-)(b) and Omega(-)(b) baryons to the charmless final
states ph(-)h'(-), where h((')) denotes a kaon or pion, are searched for
with the LHCb detector. The analysis is based on a sample of
proton-proton collision data collected at center-of-mass energies root s
= 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb(-1).
The decay Xi(-)(b) -> pK(-)K(-) is observed with a significance of
8.7 standard deviations, and evidence at the level of 3.4 standard
deviations is found for the Xi(-)(b) -> pK(-)pi(-) decay. Results are
reported, relative to the B- -> K+K-K- normalization channel, for
the products of branching fractions and b-hadron production fractions.
The branching fractions of Xi(-)(b) -> pK(-)pi(-) and Xi(-)(b) -> p
pi(-)pi(-) relative to Xi(-)(b) -> pK(-)K(-) decays are also
measured.
| Title: | Observation of the Decay Xi(-)(b) -> pK(-)K(-) |
| Authors: | Aaij, R. Adeva, B. Adinolfi, M. |
| Keywords: | PACKAGE TOOL |
| Issue Date: | 2017 |
| Publisher: | AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA |
| Citation: | ISIKNOWLEDGE |
| Abstract: | Decays of the Xi(-)(b) and Omega(-)(b) baryons to the charmless final states ph(-)h'(-), where h((')) denotes a kaon or pion, are searched for with the LHCb detector. The analysis is based on a sample of proton-proton collision data collected at center-of-mass energies root s = 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb(-1). The decay Xi(-)(b) -> pK(-)K(-) is observed with a significance of 8.7 standard deviations, and evidence at the level of 3.4 standard deviations is found for the Xi(-)(b) -> pK(-)pi(-) decay. Results are reported, relative to the B- -> K+K-K- normalization channel, for the products of branching fractions and b-hadron production fractions. The branching fractions of Xi(-)(b) -> pK(-)pi(-) and Xi(-)(b) -> p pi(-)pi(-) relative to Xi(-)(b) -> pK(-)K(-) decays are also measured. |
| Description: | TNS07069 ; PHYSICAL REVIEW LETTERS Volume: 118 Issue: 7 Article Number: 071801 Published: FEB 16 2017 |
| URI: | http://repository.vnu.edu.vn/handle/VNU_123/29690 |
| ISSN: | 0031-9007 1079-7114 |
| Appears in Collections: | Bài báo của ĐHQGHN trong Web of Science |
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