✦ LIBER ✦

Beam normal spin asymmetry in elastic lepton–nucleon scattering

✍ Scribed by M Gorchtein; P.A.M Guichon; M Vanderhaeghen

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 260 KB
Volume: 741
Category: Article
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2004.06.008

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✦ Synopsis

We discuss the two-photon exchange contribution to observables which involve lepton helicity flip in elastic lepton-nucleon scattering. This contribution is accessed through the single spin asymmetry for a lepton beam polarized normal to the scattering plane. We estimate this beam normal single spin asymmetry at large momentum transfer using a parton model and we express the corresponding amplitude in terms of generalized parton distributions.

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