6533b85ffe1ef96bd12c10ee
RESEARCH PRODUCT
Low-energy doubly virtual Compton scattering from dilepton electroproduction on a nucleon
Marc VanderhaeghenCarl E. CarlsonVladyslav Pauksubject
PhysicsParticle physicsProtonNuclear Theory010308 nuclear & particles physicsHadronCompton scatteringFOS: Physical sciences01 natural sciencesLamb shiftNuclear Theory (nucl-th)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesSensitivity (control systems)010306 general physicsNucleonElectron scatteringExotic atomdescription
We propose a new way to experimentally determine the subleading low-energy structure constant of doubly virtual Compton scattering on a proton. Such empirical determination will reduce the theoretical model error in estimates of the hadronic correction to the muonic hydrogen Lamb shift. We demonstrate that the dilepton forward-backward asymmetry in the e−p→e−pe−e+ process, which can be accessed at electron scattering facilities, yields a large sensitivity to this so far unknown low-energy constant.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-09-08 | Physical Review |