Sivers Effect in Dihadron Electroproduction
1 Yerevan Physics Institute, 2 Alikhanyan Brothers St., 375036 Yerevan, Armenia
2 INFN, Sezione di Torino, 10125 Torino, Italy
3 ARC Centre of Excellence for Particle Physics at the Tera-scale, CSSM, School of Chemistry and Physics, The University of Adelaide, Adelaide SA 5005, Australia
Published online: 23 January 2015
The Sivers effect in polarized SIDIS can be measured in two hadron production as sine modulations involving the azimuthal angles ϕT and ϕR of both the total and the relative transverse momenta of the hadron pair, complementary to the conventional single hadron studies. In this talk we briefly present the results obtained in our recent work  and . We also present the leading order parton model expression for the two hadron SIDIS cross section for different choices of the relative transverse momentum that dismiss the seeming contradiction of our results with previous work. Finally, we show the numerical predictions for the corresponding single spin asymmetries in the kinematics of COMPASS experiment obtained using the modified version of the LEPTO Monte Carlo event generator that includes the Sivers effect.
© Owned by the authors, published by EDP Sciences, 2015
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