Search for a two-photon exchange contribution to inclusive deep-inelastic scattering

2009/07/31 by The HERMES Collaboration, A. Airapetian, Н. Акопов +98 · 2 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Crystallography and Radiation Phenomena #Radiation Detection and Scintillator Technologies #hep-ex

paper · pdf · doi:10.1016/j.physletb.2009.11.041

published as Phys.Lett.B682:351-354,2010 · 5 pages, 1 figure, revised text

arxiv created 2009/11/18 · openalex publication_date 2009/11/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/02

Abstract

The transverse-target single-spin asymmetry for inclusive deep-inelastic scattering with effectively unpolarized electron and positron beams off a transversely polarized hydrogen target was measured, with the goal of searching for a two-photon exchange signal in the kinematic range 0.007<xB<0.9 and 0.25GeV2<Q2<20GeV2. In two separate regions Q2>1GeV2 and Q2<1GeV2, and for both electron and positron beams, the asymmetries are found to be consistent with zero within statistical and systematic uncertainties, which are of order 10−3 for the asymmetries integrated over xB.

Citations

• Transverse single spin asymmetries in inclusive deep-inelastic scattering
• Global analysis of proton elastic form factor data with two-photon exchange corrections

Cited by

• Single-spin asymmetries in inclusive deep inelastic scattering and multiparton correlations in the nucleon
• Target-normal single spin asymmetries measured with positrons

Related

• Diffractive Two-Photon Exchange and Beam Normal-Spin Asymmetries for Elastic Electron Scattering on Nuclei
• Measurement of the transverse target-spin asymmetry associated with deeply virtual Compton scattering on the proton
• The transversity function and double spin asymmetry in semi-inclusive DIS
• Beam normal spin asymmetry in the equivalent photon approximation
• Improved positivity bound for Deep Inelastic Scattering on transversely polarized nucleon