Transverse single-spin asymmetries in gauge boson production

Abstract

Transverse single-spin asymmetries (SSA) in inclusive reactions are now considered to be directly related to the transverse momentum $k_T$ of the fundamental partons involved in the process. Several possible leading-twist QCD mechanisms have been proposed to explain the available data, in particular the Sivers effect which was resurrected recently. We show that from the measurement of transverse SSA in inclusive production of gauge bosons, one can learn more about the Sivers functions and possibly to achieve a reliable flavor separation.

arXiv comment7 pages, latex, no figures, to be published in Phys.Lett.B

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Cited by in corpus (8)

• Test the time-reversal modified universality of the Sivers function
• Connection between the Sivers function and the anomalous magnetic moment
• TMDs and SSAs in hadronic interactions
• Transverse single spin asymmetries in photon production
• Single transverse spin asymmetry of dilepton production near $Z^0$ pole
• Transverse spin asymmetries for W-production in proton-proton collisions
• Spin asymmetries for vector boson production in polarized p+p collisions
• Positivity bounds for Sivers functions