Measurements of CP asymmetries in charmless four-body Λb0 and Ξb0 decays

LHCb Collaboration

Research output: Contribution to journalArticle

Abstract

A search for CP violation in charmless four-body decays of Λb0 and Ξb0 baryons with a proton and three charged mesons in the final state is performed. To cancel out production and detection charge-asymmetry effects, the search is carried out by measuring the difference between the CP asymmetries in a charmless decay and in a decay with an intermediate charmed baryon with the same particles in the final state. The data sample used was recorded in 2011 and 2012 with the LHCb detector and corresponds to an integrated luminosity of 3fb-1. A total of 18 CP asymmetries are considered, either accounting for the full phase space of the decays or exploring specific regions of the decay kinematics. No significant CP-violation effect is observed in any of the measurements.

Original languageEnglish
Article number745
JournalEuropean Physical Journal C
Volume79
Issue number9
DOIs
Publication statusPublished - 1 Sep 2019

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Luminance
Protons
Kinematics
asymmetry
Detectors
decay
CP violation
baryons
kinematics
mesons
luminosity
protons
detectors

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Cite this

Measurements of CP asymmetries in charmless four-body Λb0 and Ξb0 decays. / LHCb Collaboration.

In: European Physical Journal C, Vol. 79, No. 9, 745, 01.09.2019.

Research output: Contribution to journalArticle

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abstract = "A search for CP violation in charmless four-body decays of Λb0 and Ξb0 baryons with a proton and three charged mesons in the final state is performed. To cancel out production and detection charge-asymmetry effects, the search is carried out by measuring the difference between the CP asymmetries in a charmless decay and in a decay with an intermediate charmed baryon with the same particles in the final state. The data sample used was recorded in 2011 and 2012 with the LHCb detector and corresponds to an integrated luminosity of 3fb-1. A total of 18 CP asymmetries are considered, either accounting for the full phase space of the decays or exploring specific regions of the decay kinematics. No significant CP-violation effect is observed in any of the measurements.",
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AU - Albrecht, J.

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