A Method of Experimentally Probing Transeverse Momentum Dependent Distributions

Details A Method of Experimentally Probing Transeverse Momentum Dependent Distributions A Method of Experimentally Probing Transeverse Momentum Dependent Distributions

2007-10-14

arxiv.org/abs/0710.2672v1

Phys.Lett.B662:123-128,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 31 figures

Scientific paper

10.1016/j.physletb.2008.01.033

We calculate the double spin asymmetry A_LL(x, y, z, P_hT) of pi^0 production with the spectator model and the model based on the factorization ansatz. We also calculate the double spin asymmetry for the integration over the range of (x,y,z) for the setups of the experiments of COMPASS, HERMES, and JLab. We find that the results are characteristically dependent on the model used. Therefore, we suggest that the measurements of the double spin asymmetry provides a method of experimentally probing the transeverse momentum dependent distributions.

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