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Observation of the Λ0b→Λϕ decay


LHCb Collaboration; Bernet, R; Müller, K; Steinkampf, O; Straumann, U; Vollhardt, A; et al (2016). Observation of the Λ0b→Λϕ decay. Physics Letters B:282-292.

Abstract

The Λ0b→Λϕ 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→ss¯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±1.04±0.35+0.67−0.62)×10−6, 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.

Abstract

The Λ0b→Λϕ 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→ss¯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±1.04±0.35+0.67−0.62)×10−6, 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.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2016
Deposited On:27 Dec 2016 09:53
Last Modified:02 Feb 2018 11:08
Publisher:Elsevier
ISSN:0370-2693
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.physletb.2016.05.077
Related URLs:http://eprints.gla.ac.uk/122463/
https://ora.ox.ac.uk/objects/uuid:2f254487-e3b2-45cc-8e12-21fd6c55fb83

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