Probing the Gluon Sivers Function with an Unpolarized Target: GTMD Distributions and the Odderons

Renaud Boussarie; Yoshitaka Hatta; Lech Szymanowski; Samuel Wallon

doi:10.1103/PhysRevLett.124.172501

Probing the Gluon Sivers Function with an Unpolarized Target: GTMD Distributions and the Odderons

Renaud Boussarie
, Yoshitaka Hatta
, Lech Szymanowski
, Samuel Wallon

Brookhaven National Laboratory
Physics Department
National Centre for Nuclear Research (NCBJ)
Université Paris-Saclay
UPMC Univ. Paris 06
Sorbonne Université

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

It is commonly believed that the Sivers function has uniquely to do with processes involving a transversely polarized nucleon. In this Letter we show that this is not necessarily the case. We demonstrate that exclusive pion production in unpolarized electron-proton scattering in the forward region is a direct probe of the gluon Sivers function due to its connection to the QCD odderon.

Original language	English
Article number	172501
Journal	Physical Review Letters
Volume	124
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.124.172501
Publication status	Published - 1 May 2020
Externally published	Yes

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10.1103/PhysRevLett.124.172501

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abstract = "It is commonly believed that the Sivers function has uniquely to do with processes involving a transversely polarized nucleon. In this Letter we show that this is not necessarily the case. We demonstrate that exclusive pion production in unpolarized electron-proton scattering in the forward region is a direct probe of the gluon Sivers function due to its connection to the QCD odderon.",

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AU - Wallon, Samuel

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AB - It is commonly believed that the Sivers function has uniquely to do with processes involving a transversely polarized nucleon. In this Letter we show that this is not necessarily the case. We demonstrate that exclusive pion production in unpolarized electron-proton scattering in the forward region is a direct probe of the gluon Sivers function due to its connection to the QCD odderon.

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Probing the Gluon Sivers Function with an Unpolarized Target: GTMD Distributions and the Odderons

Abstract

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