6533b81ffe1ef96bd1278719
RESEARCH PRODUCT
First measurement of proton's charge form factor at very low $Q^2$ with initial state radiation
Michaela ThielM. O. DistlerJ. BeričičM. MihovilovičM. MihovilovičConcettina SfientiJan C. BernauerL. NungesserS. ŠIrcaS. ŠIrcaIvica FriščićA. G. DenigT. BeranekD. G. MiddletonJ. PochodzallaP. AchenbachR. BöhmF. SchulzA. TyukinDamir BosnarK. A. GriffioenM. I. Ferretti BondyMarc VanderhaeghenY. KohlM. CardinaliM. RohrbeckL. DebenjakM. SchothL. CorreaM. HoekB. S. SchlimmeM. WeinrieferU. MüllerS. Sánchez MajosS. KegelS. ŠTajnerH. FonvieilleA. WeberAnselm EsserJ.m. FriedrichHarald Merkelsubject
experimental methodsProtonelastic scattering01 natural sciencesHigh Energy Physics - ExperimentLamb shiftHigh Energy Physics - Experiment (hep-ex)Initial state radiation ; Proton ; Form factor ; Radiative correctionsRadiative transfer[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex][ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex]Nuclear Experiment (nucl-ex)Nuclear ExperimentNuclear ExperimentMicrotronElastic scatteringPhysicsForm factor (quantum field theory)beam: currentRadiative correctionslcsh:QC1-9993. Good healthPRIRODNE ZNANOSTI. Fizika.ProtonNuclear and High Energy PhysicsFOS: Physical sciencesBethe-Heitler25.30.BfRadiation[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]Nuclear physicselectron p: scatteringMainz Linac[ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex]12.20.-m0103 physical sciencesradiation: initial-state interaction010306 general physicsnumerical calculationsform factor: charge41.60.-m010308 nuclear & particles physicsScatteringp: chargeNATURAL SCIENCES. Physics.microtronForm factorLamb shiftspectrometerInitial state radiationlcsh:Physicsexperimental resultsdescription
We report on a new experimental method based on initial-state radiation (ISR) in e-p scattering, in which the radiative tail of the elastic e-p peak contains information on the proton charge form factor ($G_E^p$) at extremely small $Q^2$. The ISR technique was validated in a dedicated experiment using the spectrometers of the A1-Collaboration at the Mainz Microtron (MAMI). This provided first measurements of $G_E^p$ for $0.001\leq Q^2\leq 0.004 (GeV/c)^2$.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-08-01 |