Two-photon exchange measurements with positrons and electrons

Journal Article · Wed Sep 02 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3232022· OSTI ID:21344528

Arrington, John ^[1]

---

1. Physics Division, Argonne National Laboratory, Argonne, IL 60439 (United States)

Two-photon exchange contributions have potentially broad ranging impact on several charged lepton scattering measurements. Previously believed to be extremely small, based in part on comparisons of positron scattering and electron scattering in the 1950s and 1960s, recent data suggest that the corrections may be larger than expected, in particular in kinematic regions that were inaccessible in these early positron scattering measurements. Additional measurements using positron beams at Jefferson Lab would allow for a detailed investigation of these contributions in a range of reactions and observables.

• OSTI ID: 21344528
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1160; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BOSONS
CEBAF ACCELERATOR
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
COMPARATIVE EVALUATIONS
CORRECTIONS
DEUTERIUM TARGET
DEUTERONS
DIMENSIONLESS NUMBERS
ELECTROMAGNETIC FORM FACTORS
ELECTRON REACTIONS
ELECTRONS
ELEMENTARY PARTICLES
EVALUATION
EXCHANGE INTERACTIONS
FERMIONS
FORM FACTORS
INTERACTIONS
LEPTON REACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
LINEAR ACCELERATORS
MASSLESS PARTICLES
MATTER
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PHOTONS
POLARIZATION
POSITRON REACTIONS
POSITRONS
SCATTERING
TARGETS