Neutron contribution to nuclear DVCS asymmetries
| dc.creator | Guzey, V. | |
| dc.date | 2008-01-21 | |
| dc.date.accessioned | 2026-07-07T11:55:24Z | |
| dc.date.available | 2026-07-07T11:55:24Z | |
| dc.description | Using a simple model for nuclear GPDs, we study the role of the neutron contribution to nuclear DVCS observables. As an example, we use the beam-spin asymmetry A_{LU}^A measured in coherent and incoherent DVCS on a wide range of nuclear targets in the HERMES and JLab kinematics. We find that at small values of the momentum transfer t, A_{LU}^A is dominated by the coherent-enriched contribution, which enhances A_{LU}^A compared to the free proton asymmetry A_{LU}^p, A_{LU}^A(ϕ)/A_{LU}^p(ϕ)=1.8-2.2. At large values of t, the nuclear asymmetry is dominated by the incoherent contribution and A_{LU}^A/(ϕ)A_{LU}^p(ϕ)=0.66-0.74. The deviation of A_{LU}^A(ϕ)/A_{LU}^p(ϕ) from unity at large t is a result of the neutron contribution, which gives a possibility to constain neutron GPDs in incoherent nuclear DVCS. A similar trend is expected for other DVCS asymmetries. | |
| dc.description | 24 pages, 7 figures | |
| dc.identifier | https://arxiv.org/abs/0801.3235 | |
| dc.identifier | http://arxiv.org/abs/0801.3235 | |
| dc.identifier | Phys.Rev.C78:025211,2008 | |
| dc.identifier | doi:10.1103/PhysRevC.78.025211 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205233 | |
| dc.subject | Nuclear Theory | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Neutron contribution to nuclear DVCS asymmetries | |
| dc.type | text |