Observation of the Λ<i><sub>b</sub></i><SUP>0</SUP> → Λφ decay



Aaij, R, Beteta, C Abellan, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S
et al (show 725 more authors) (2016) Observation of the Λ<i><sub>b</sub></i><SUP>0</SUP> → Λφ decay. PHYSICS LETTERS B, 759. pp. 282-292.

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Abstract

The $\Lambda_b^0\to\Lambda\phi$ decay is observed using data corresponding to an integrated luminosity of 3.0fb$^{-1}$ recorded by the LHCb experiment. The decay proceeds at leading order via a $b\to s\bar{s}s$ loop transition and is therefore sensitive to the possible presence of particles beyond the Standard Model. A first observation is reported with a significance of $5.9$ standard deviations. The value of the branching fraction is measured to be $(5.18\pm1.04\pm0.35\,^{+0.67}_{-0.62})\times10^{-6}$, where the first uncertainty is statistical, the second is systematic, and the third is related to external inputs. Triple-product asymmetries are measured to be consistent with zero.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-002.html - modified to match minor changes in the published version, corrected to add additional factor in the ratio of branching fractions
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 01 Jul 2016 09:36
Last Modified: 12 Oct 2023 08:50
DOI: 10.1016/j.physletb.2016.05.077
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3001968