Transverse Lambda Polarization at LHC

TL;DR

This paper discusses the phenomenon of transverse Lambda hyperon polarization in proton-proton and proton-lead collisions at the LHC, proposing a factorized model involving transverse momentum and spin effects in fragmentation.

Contribution

It introduces a factorized description of Lambda polarization at high transverse momentum, with specific predictions for LHC experiments in different collision regions.

Findings

Transverse Lambda polarization can be described by a factorized model.

Predictions for polarization signals at midrapidity and forward regions at LHC.

Suggestions for experimental investigations at LHC.

Abstract

Transverse polarization of Lambda hyperons produced in p p and p Pb collisions is discussed. A factorized description in the intermediate to high p_T region is considered that involves transverse momentum and spin dependence in the fragmentation process. Consequences and suggestions for investigations at LHC are pointed out for the process p + p -> Lambda^uparrow + jets + X at midrapidity and p + p/Pb -> Lambda^uparrow + X in the forward region.