A model of deep inelastic polarized electroproduction

Joshipura, Anjan S. ; Roy, Probir (1982) A model of deep inelastic polarized electroproduction Physics Letters B, 195 (3). pp. 365-380. ISSN 0370-2693

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0550-3213(82)90001-3


A realistic phenomenological model combining parton/QCD ideas with lower energy SU(6) constraints is proposed for the shape and evolution of the leading spin-dependent structure function Gep(x, Q2) in polarized electroproduction. Close's broken-SU(6) ansatz is used to relate appropriately defined polarized quark-parton distribution densities to unpolarized ones at the matching momentum scale Q2 = Q02. The differences between spin and helicity distribution densities as well as the complications due to perturbative QCD and parton kτ (with related target-mass) effects are taken into account. Evolution to higher ( > 10 GeV2) values of Q2 (where target-mass effects can be neglected) yields experimentally testable numerical predictions that are presented through various plots. The value of Q0 is self-consistently determined to be about 0.5 GeV.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:75055
Deposited On:20 Dec 2011 11:56
Last Modified:11 Jul 2012 05:18

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