On the role of Collins effect in the single spin asymmetry A_N in p(transv. polarized) p --> h X processes

16 π2 xa xb z2s d2k⊥a d2k⊥b d3p⊥ δ(p⊥ · pˆc) J (p⊥) δ(sˆ + tˆ+ uˆ)

[4] D. W. Sivers, Phys. Rev. D43, 261 (1991).

[5] D. Boer and P. Mulders, Phys. Rev. D57, 5780 (1998), hep-ph/9711485.

[6] J. C. Collins, Nucl. Phys. B396, 161 (1993).

[7] M. Anselmino et al., Phys. Rev. D72, 094007 (2005), hep-ph/0507181.

[8] M. Anselmino et al., Eur. Phys. J. A39, 89 (2009), 0805.2677[hep-ph].

[9] W. Vogelsang and F. Yuan, Phys. Rev. D72, 054028 (2005), hep-ph/0507266.

[10] J. C. Collins et al., Phys. Rev. D73, 014021 (2006), hep-ph/0509076.

[11] M. Anselmino et al., in Proceedings of the International Workshop on Transverse Polarization Phenomena in Hard Processes (Transversity 2005), Como, Italy, 2005, edited by V. Barone and P. G. Ratcliffe (World Scientific, Singapore, 2006), p. 236, hep-ph/0511017.

[12] A. V. Efremov, K. Goeke, and P. Schweitzer, Phys. Rev. D73, 094025 (2006), hep-ph/0603054.

[13] K. Abe et al. (Belle Collaboration), Phys. Rev. Lett. 96, 232002 (2006), hep-ex/0507063.

[14] R. Seidl et al. (Belle Collaboration), Phys. Rev. D78, 032011 (2008), 0805.2975[hep-ex].

[15] M. Anselmino et al., Phys. Rev. D75, 054032 (2007), hep-ph/0701006.

[16] M. Anselmino et al., Nucl. Phys. Proc. Suppl. 191, 98 (2009), 0812.4366[hep-ph].

[17] X.-D. Ji, J.-P. Ma, and F. Yuan, Phys. Rev. D71, 034005 (2005), hep-ph/0404183.