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Measurement of transverse Λ and (Formula Presented) hyperon polarization in pPb collisions at (Formula Presented) TeV

  • LHCb Collaboration

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

The transverse polarization of Λ and (Formula Presented) hyperons is measured in pPb collisions collected by the LHCb experiment at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The polarization is averaged over hyperon transverse momentum in the range 0.15 < pT < 6.00 GeV=c, and Feynman-x in the ranges 0.005 < xF < 0.040 (forward region) and −0.10 < xF < −0.01 (backward region) defined relative to the proton beam direction. The transverse polarization is found to be compatible with zero for both Λ and Λ̄ hyperons. The results are also measured as a function of pT and xF with no significant dependence on these variables observed. The results are compared with previous experimental measurements at different center-of-mass energies and collision environments.

Original languageEnglish
Article number112022
Pages (from-to)1-15
Number of pages15
JournalPhysical Review D
Volume112
DOIs
Publication statusPublished - 1 Dec 2025

Bibliographical note

Published online: 24 December, 2025.

Publisher Copyright:
© 2025 CERN, for the LHCb Collaboration

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