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

Research output: Contribution to journalArticlepeer-review

Authors

  • LHCb Collaboration

Colleges, School and Institutes

External organisations

  • Universidad de Santiago de Compostela
  • CERN
  • University of Bristol
  • LPC
  • University of Cincinnati
  • TU Dortmund University, Germany
  • University of Glasgow
  • Universitat de Barcelona
  • Nikhef National Institute for Subatomic Physics
  • Petersburg Nuclear Physics Institute (PNPI)
  • Imperial College London
  • Universidade Federal Do Rio de Janeiro
  • INFN Padova
  • IN2P3
  • Tsinghua University
  • Sezione INFN di Firenze
  • Ecole Polytechnique Federale de Lausanne
  • Sezione INFN di Ferrara
  • University of Maryland
  • University of Manchester
  • Ruprecht-Karls-Universität Heidelberg
  • Institute for High Energy Physics (IHEP)
  • Syracuse University
  • University of Zurich
  • Department of Physics and Astronomy and INFN
  • University of Warwick
  • Pontifícia Universidade Católica Do Rio de Janeiro
  • INFN Sezione di Cagliari
  • Massachusetts Institute of Technology
  • Institute of Physics
  • Max-Planck-Institut für Kernphysik (MPIK)

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.

Details

Original languageEnglish
Article number745
Number of pages19
JournalEuropean Physical Journal C
Volume79
Issue number9
Publication statusPublished - 7 Sep 2019