Deeply virtual compton scattering from the neutron with CLAS and CLAS12

被引：0

作者：

Sokhan, D. ^{[1
]}

机构：

[1] Univ Glasgow, Glasgow, Lanark, Scotland

来源：

PHYSICS OF PARTICLES AND NUCLEI | 2014年 / 45卷 / 01期

关键词：

Light Guide; Longitudinal Momentum; Deeply Virtual Compton Scattering; Free Proton; Polarisation Asym Metries;

D O I：

10.1134/S1063779614010961

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Generalised Parton Distributions (GPDs) offer an insight into the three-dimensional structure of the nucleon and its internal dynamics, relating the longitudinal momentum of quarks to their transverse position. A very effective means of accessing GPDs is via measurements of cross-sections and polarisation-asymmetries in Deeply Virtual Compton Scattering (DVCS). In particular, the beam-spin asymmetry (BSA) in DVCS from the neutron is especially sensitive to angular momentum of the up- and down-quarks, and its measurement therefore has potential to shed important light on the puzzle of nucleon spin. We present a preliminary extraction of BSA from a recent experiment using a 6 GeV electron beam and the CLAS detector at Jefferson Laboratory and introduce the Central Neutron Detector to be integrated with CLAS12 for the exclusive measurement of neutron DVCS at 11 GeV, made possible by the Jefferson Lab upgrade.

引用

页码：170 / 172

页数：3

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