Single transverse-spin asymmetry and Sivers function in large momentum effective theory

URN to cite this document:: urn:nbn:de:bvb:355-epub-517571
DOI to cite this document:: 10.5283/epub.51757

Ji, Xiangdong ; Liu, Yizhuang ; Schäfer, Andreas ; Yuan, Feng

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Date of publication of this fulltext: 20 Feb 2022 15:50

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Abstract

We apply recent developments in large momentum effective theory (LaMET) to formulate a nonperturbative calculation of the single transverse-spin asymmetry from the so-called Sivers mechanism in terms of quasi-transverse-momentum-dependent quark distribution functions. When the spin asymmetry is defined as the ratio of the quark Sivers function over the spin-averaged distribution, it can be ...