6533b852fe1ef96bd12aaef5

RESEARCH PRODUCT

Nuclear-mass dependence of azimuthal beam-helicity and beam-charge asymmetries in deeply virtual Compton scattering

Y. HollerD. VeretennikovXianguo LuM. NegodaevF. GiordanoY. SalomatinP. E. ReimerM. ContalbrigoAlessandra FantoniHengqiang YeM. HoekRezo ShanidzeMartin RaithelE. C. AschenauerJ. BurnsB. ZihlmannMichael TytgatA. NassB. Q. MaM. HartigP. LenisaK. RithV. A. KorotkovS. TaroianAlexander BorissovB. BallC. B. Van HulseM. CapiluppiH. S. JoM. EhrenfriedT. KeriT. KeriSalvatore FrullaniM. StateraA. AirapetianA. AirapetianR. De LeoA. IvanilovP. F. DalpiazStephen V. GliskeShan WangV. A. GapienkoE. AvetisyanP. Di NezzaA. TrzcinskiM. DiefenthalerM. DiefenthalerValeria MucciforaC. A. MillerC. RiedlG. ElbakianS. I. ManaenkovH. MarukyanN. AkopovL. FelawkaM. AmarianS. YaschenkoS. HaanG. HillS. JoostenS. JoostenV. VikhrovJ. G. RubinF. StinzingX. R. LuA. López RuizG. KaryanI. LehmannN. C. R. MakinsG. P. CapitaniW. YuA. KisselevW. AugustyniakV. KozlovWouter DeconinckWouter DeconinckRalf KaiserY. Van HaarlemY. Van HaarlemS. BelostotskiR. LambV. BryzgalovDirk RyckboschM. StancariL. LagambaAdel TerkulovA. RostomyanA. R. ReolonG. CiulloA. AvetissianE. SteffensLuciano PappalardoZ. AkopovT. A. ShibataP. ZupranskiI. VilardiG. GavrilovG. GavrilovH. BöttcherR.o. AvakianG. GapienkoD. ZeilerR. Perez-benitoH. E. JacksonE. CisbaniVadim GuzeyB. MarianskiD. GabbertMorgan MurrayK. P. SchülerAndreas MussgillerE. De SanctisJ. StewartFrank EllinghausFrank EllinghausG. RosnerFranco GaribaldiVitaly ShutovH. P. BlokA. MovsisyanE. R. KinneyNicola BianchiWolfgang LorenzonY. NaryshkinArne VandenbrouckeRiccardo FabbriA. HillenbrandY. ImazuIvana HristovaJ. BowlesCynthia Marie HadjidakisY. MiyachiD. HaschL. De NardoZhenyu YeV. GharibyanJ. J. M. SteijgerMichael DürenW.-d. NowakL. ManfréA. Martinez De La OssaH. GulerEugenio NappiG. SchnellL. LapikásM. VarandaDavid MahonAndreas SchäferY. J. MaoP. Kravchenko

subject

Nuclear and High Energy PhysicsParticle physicsPhotonNuclear TheoryHERAFOS: Physical sciencesIMPACT PARAMETER SPACEPartonGENERALIZED PARTON DISTRIBUTIONS; IMPACT PARAMETER SPACE; SPIN; HERA01 natural sciences7. Clean energyHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)GENERALIZED PARTON DISTRIBUTIONS0103 physical sciencesddc:530Nuclear Experiment010306 general physicsPhysicsElastic scattering010308 nuclear & particles physicsScatteringCompton scatteringHERASPINPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentNucleonBeam (structure)

description

The nuclear-mass dependence of azimuthal cross section asymmetries with respect to charge and longitudinal polarization of the lepton beam is studiedfor hard exclusive electroproduction of real photons. The observed beam-charge and beam-helicity asymmetries are attributed to the interference between the Bethe-Heitler and deeply virtual Compton scattering processes. For various nuclei, the asymmetries are extracted for both coherent and incoherent-enriched regions, which involve different (combinations of) generalized parton distributions. For both regions, the asymmetries are compared to those for a free proton, and no nuclear-mass dependence is found.

yearjournalcountryeditionlanguage
2009-10-31
https://bib-pubdb1.desy.de/record/87781