arXiv:1912.08182·v1·High Energy Physics — Phenomenology
Probing the Sivers function with an unpolarized target: GTMD distributions and the Odderons
Renaud Boussarie🇺🇸 · Yoshitaka Hatta🇺🇸 · Lech Szymanowski🇵🇱 · Samuel Wallon🇫🇷
Abstract
It is commonly believed that the Sivers function has uniquely to do with processes involving a transversely polarized nucleon. In this paper we show that it is not necessarily the case. We demonstrate that exclusive pion production in polarized electron-proton scattering in the forward region is a direct probe of the gluon Sivers function due to its connection to the QCD Odderon.
Comments: 6 pages, 1 figure