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

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Ji, Xiangdong ; Liu, Yizhuang ; Schäfer, Andreas ; Yuan, Feng
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 20 Feb 2022 15:50


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 ...


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