Observation of the Λb0→Λϕ decay

Robert Appleby; Thomas Bird; George Lafferty; Stefanie Reichert; Eduardo Rodrigues; Pablo Rodriguez Perez; LHCb Collaboration

doi:10.1016/j.physletb.2016.05.077

Observation of the Λb0→Λϕ decay

Robert Appleby, Thomas Bird, George Lafferty, Stefanie Reichert, Eduardo Rodrigues, Pablo Rodriguez Perez, LHCb Collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

The View the MathML sourceΛb0→Λϕ decay is observed using data corresponding to an integrated luminosity of 3.0 fb−13.0 fb−1 recorded by the LHCb experiment. The decay proceeds at leading order via a View the MathML sourceb→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 View the MathML source(5.18±1.04±0.35−0.62+0.67)×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.

Original language	English
Pages (from-to)	282–292
Number of pages	11
Journal	Physics Letters B
Volume	759
Early online date	26 May 2016
DOIs	https://doi.org/10.1016/j.physletb.2016.05.077
Publication status	Published - 26 May 2016

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title = "Observation of the Λb0→Λϕ decay",

abstract = "The View the MathML sourceΛb0→Λϕ decay is observed using data corresponding to an integrated luminosity of 3.0 fb−13.0 fb−1 recorded by the LHCb experiment. The decay proceeds at leading order via a View the MathML sourceb→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 View the MathML source(5.18±1.04±0.35−0.62+0.67)×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.",

author = "Robert Appleby and Thomas Bird and Silvia Borghi and Jolanta Brodzicka and Christopher Burr and Lorenzo Capriotti and Shanzhen Chen and {De Capua}, Stefano and Giulio Dujany and Marco Gersabeck and Christoph Hombach and Suzanne Klaver and George Lafferty and Kevin Maguire and Andrew Mcnab and Christopher Parkes and Alex Pearce and Stefanie Reichert and Eduardo Rodrigues and {Rodriguez Perez}, Pablo and {LHCb Collaboration}",

year = "2016",

month = may,

day = "26",

doi = "10.1016/j.physletb.2016.05.077",

language = "English",

volume = "759",

pages = " 282–292",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Observation of the Λb0→Λϕ decay

AU - Appleby, Robert

AU - Bird, Thomas

AU - Borghi, Silvia

AU - Brodzicka, Jolanta

AU - Burr, Christopher

AU - Capriotti, Lorenzo

AU - Chen, Shanzhen

AU - De Capua, Stefano

AU - Dujany, Giulio

AU - Gersabeck, Marco

AU - Hombach, Christoph

AU - Klaver, Suzanne

AU - Lafferty, George

AU - Maguire, Kevin

AU - Mcnab, Andrew

AU - Parkes, Christopher

AU - Pearce, Alex

AU - Reichert, Stefanie

AU - Rodrigues, Eduardo

AU - Rodriguez Perez, Pablo

AU - LHCb Collaboration

PY - 2016/5/26

Y1 - 2016/5/26

N2 - The View the MathML sourceΛb0→Λϕ decay is observed using data corresponding to an integrated luminosity of 3.0 fb−13.0 fb−1 recorded by the LHCb experiment. The decay proceeds at leading order via a View the MathML sourceb→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 View the MathML source(5.18±1.04±0.35−0.62+0.67)×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.

AB - The View the MathML sourceΛb0→Λϕ decay is observed using data corresponding to an integrated luminosity of 3.0 fb−13.0 fb−1 recorded by the LHCb experiment. The decay proceeds at leading order via a View the MathML sourceb→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 View the MathML source(5.18±1.04±0.35−0.62+0.67)×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.

U2 - 10.1016/j.physletb.2016.05.077

DO - 10.1016/j.physletb.2016.05.077

M3 - Article

SN - 0370-2693

VL - 759

SP - 282

EP - 292

JO - Physics Letters B

JF - Physics Letters B

ER -

Observation of the Λb0→Λϕ decay

Abstract

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