Transverse polarization of $\Lambda$ hyperons from quasireal photoproduction on nuclei

Abstract

The transverse polarization of $\Lambda$ hyperons was measured in inclusive quasireal photoproduction for various target nuclei ranging from hydrogen to xenon. The data were obtained by the HERMES experiment at HERA using the 27.6 GeV lepton beam and nuclear gas targets internal to the lepton storage ring. The polarization observed is positive for light target nuclei and is compatible with zero for krypton and xenon.

arXiv commentfinal version to be published in Phys. Rev. D (in press)

References in corpus (10)

• High-Energy-Physics Event Generation with PYTHIA 6.1
• The complete tree-level result up to order $1/Q$ for polarized deep-inelastic leptoproduction
• The HERMES Spectrometer
• Impact Parameter Dependent Parton Distributions and Transverse Single Spin Asymmetries
• An Observation Concerning the Process Dependence of the Sivers Functions
• Towards an explanation of transverse single-spin asymmetries in proton-proton collisions: the role of fragmentation in collinear factorization
• Hadronization in semi-inclusive deep-inelastic scattering on nuclei
• Multidimensional Study of Hadronization in Nuclei
• Transverse Polarization of Lambda and Lambda-bar Hyperons in Quasireal Photoproduction
• Hyperon Polarization from Unpolarized pp and ep Collisions

Cited by in corpus (9)

• Parton Fragmentation Functions
• Operator Constraints for Twist-3 Functions and Lorentz Invariance Properties of Twist-3 Observables
• Polarized hyperon production in single-inclusive electron-positron annihilation at next-to-leading order
• Twist-3 fragmentation contribution to polarized hyperon production in unpolarized hadronic collisions
• Single-spin asymmetries in the leptoproduction of transversely polarized $\Lambda$ hyperons
• Polarized Lambda hyperon production in Semi-inclusive deep inelastic scattering off an unpolarized nulceon target
• Twist-3 Gluon Fragmentation Contribution to Polarized Hyperon Production in Unpolarized Proton-Proton Collision
• Measurement of transverse $\Lambda$ and $\bar{\Lambda }$ hyperon polarization in $p$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV
• Global $\Lambda$ hyperon polarization in low-energy heavy ion collisions -- a scenario without vorticity