6533b85dfe1ef96bd12be941
RESEARCH PRODUCT
Lepton mass effects for beam-normal single-spin asymmetry in elastic muon-proton scattering
Oleksandr KoshchiiAndrei Afanasevsubject
PhysicsMuon010308 nuclear & particles physicsScatteringPhysics::Instrumentation and Detectorsmedia_common.quotation_subjectFOS: Physical sciencesKinematicsPolarization (waves)01 natural sciencesAsymmetryNuclear physicsTransverse planeHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Proton scattering0103 physical sciencesPhysics::Accelerator PhysicsHigh Energy Physics::Experiment010306 general physicsNuclear ExperimentLeptonmedia_commondescription
We estimate the beam-normal single-spin asymmetry in elastic lepton-proton scattering without employing the ultrarelativistic approximation. Our calculation is relevant for analyses of muon scattering at energies of few hundred MeV and below -- when effects of the muon mass become essential. At such energies, the transverse polarization of the muon beam is expected to contribute significantly to the systematic uncertainty of precision measurements of elastic muon-proton scattering. We evaluate such systematics using an example of the MUSE experiment at PSI. The muon asymmetry is estimated at about 0.1\% in kinematics of MUSE and it is the largest for scattering into a backward hemisphere.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-11-26 |