Thursday, February 21, 2013

1302.5047 (Chien-Yeah Seng et al.)

Parity Violating Deep Inelastic Electron-Deuteron Scattering: Higher
Twist and Parton Angular Momentum
   [PDF]

Chien-Yeah Seng, Michael J. Ramsey-Musolf
We study the effect of parton angular momentum on the twist-four correction to the left-right asymmetry in the electron-deuteron parity-violating deep inelastic scattering (PVDIS). We show that this higher-twist correction is transparent to the dynamics of parton angular momentum needed to account for the Sivers and Boer-Mulders functions and spin-independent parton distribution functions. A sufficiently precise measurement of the PVDIS asymmetry may, thus, provide additional information about the parton dynamics responsible for nucleon spin.
View original: http://arxiv.org/abs/1302.5047

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