论文标题
在SPD NICA实验中，横向单旋不对称性在$ D $ -Meson生产中
On transverse single-spin asymmetries in $D$-meson production at the SPD NICA experiment
论文作者
论文摘要
在本研究中，我们对sivers效应感兴趣，对$ p^{\ uparrow} p \ to dx $感兴趣。我们在两个现象学模型中计算出$ d $ -Meson生产的横向单旋不对称（TSSA），即广义的Parton模型（GPM），以及它的颜色规范不变配方（CGI-GPM），它考虑了初始Partons的横向动量。最后一个允许我们研究与过程无关的士兵功能。为了预测$ d $ -Mesons的生产横截面，我们使用了与比例无关的Peterson碎片化功能的碎片化方法，请记住$ C $ -QUARK和$ D $ -MESON的非零质量。在计划的SPD NICA实验条件下，首次提出了TSSA的估计，作为横向动量和Feynman变量的函数$ x_f $ $ d $ -Meson。
In the present study we are interested in the Sivers effect in process $p^{\uparrow}p\to DX$. We calculate the transverse single-spin asymmetry (TSSA) of $D$-meson production within two phenomenological models, namely the Generalized Parton Model (GPM) and it's Colour Gauge-Invariant formulation (CGI-GPM), which takes into account the transverse momenta of initial partons. The last one allows us to study process-independent Sivers functions. To predict production cross-section of $D$-mesons we use a fragmentation approach with scale-independent Peterson fragmentation function, taking in mind nonzero masses of $c$-quark and $D$-mesons. Estimates for the TSSAs, as a function of transverse momentum and Feynman variable $x_F$ of $D$-meson, within the conditions of the planned SPD NICA experiment are presented for the first time.
