1211.4731 (Elliot Leader et al.)

Comment on "Proton Spin Structure from Measurable Parton Distributions"
by Ji, Xiong and Yuan (PRL109, 152005 (2012))    [PDF]

Elliot Leader, Cédric Lorcé

We show that the recent claim that the expression 1/2 \int x dx [ H_q (x,0,0) + E_q(x,0,0)], involving the generalized parton distributions H and E, measures the transverse angular momentum of quarks in a transversely polarized nucleon, is incorrect.

View original: http://arxiv.org/abs/1211.4731