Prospects of transverse Λ and Λ polarization measurements at LHCb

2023/07/15 by C. Nunez, Nunez, Cynthia
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2307.07878

openalex publication_date 2023/07/15 · openalex created_date 2023/07/19 · openalex updated_date 2026/07/28

Abstract

Transverse Λ polarization observed over four decades ago contradicted expectations from early leading-order perturbative QCD calculations. Measurements of Λ polarization from unpolarized pp and pA collisions have been previously observed to increase as a function of x_F and p_T up to a few GeV range and approximately independent of beam energy. Recent studies have linked polarization to the process of hadronization, which describes how particular hadrons are formed from scattered quarks and gluons. The high energy of the LHC and the coverage and precision measurement possibilities from LHCb forward geometry are ideal for studying hyperon polarization as a function of both p_T and x_F. This contribution presents the status and prospects of hyperon polarization measurements in pp, pPb, Pbp, and fixed-target pA collisions at LHCb.

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