6533b7cffe1ef96bd125836b
RESEARCH PRODUCT
Photon-pion charge asymmetry in e+e− reactions: A laboratory for perturbative QCD phases
Bernard PireJohn P. RalstonG.a. SchulerJ. G. Körnersubject
PhysicsNuclear and High Energy PhysicsParticle physicsAnnihilationChiral perturbation theoryMesonHigh Energy Physics::Latticemedia_common.quotation_subjectHigh Energy Physics::PhenomenologyStrong interactionPerturbative QCDAsymmetryPionQuantum electrodynamicsCoulombHigh Energy Physics::Experimentmedia_commondescription
Abstract The charge asymmetry in the production of a photon and a meson in e + e - annihilation is studied in perturbative QCD. This quantity measures the interference of amplitudes governed by different momentum scales. It is thus a powerful tool to probe strong interaction phases at high energy and in the context of Sudakov exponentiation and the chromo Coulomb phase. We find a null result at the lowest non-trivial order off α s in the entire kinematic region described by perturbative QCD.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1987-11-01 | Physics Letters B |