论文标题
标量$ p $ - 波Quarkonia在轻$ k_t $ -factorization方法中
Hadroproduction of scalar $P$-wave quarkonia in the light-front $k_T$-factorization approach
论文作者
论文摘要
在这项工作中，我们对标量$ p $ -Wave $χ_{q0} $，$ q = c，b $ quarkonia电磁形式的形式的详细分析，$γ^*γ^*γ^* \χ_{q0}} $ couplings以及使用$ k_ per $ k_ \ perpact的Quark-forpact的Quark-fortor Quark-forrist Quark-fortor Quark-formont-froptim-波函数。电磁形式因子作为光子虚拟的功能表示。我们讨论了通过将我们的结果与标准非递归QCD（NRQCD）方法中的结果进行比较，讨论了MELOSH自旋旋转和相对论校正的作用。通过使用两个不同的未集成的Gluon密度进行分析，并具有$ Q \ bar Q $相互作用势与Meson Spectra一致的五个不同模型，可以找到我们方法的理论不确定性。显示了$ \ sqrt {s} = 13 \，\ rm {tev} $的$χ_{q0} $的速度和横向动量分布的结果。
In this work, we present a thorough analysis of scalar $P$-wave $χ_{Q0}$, $Q=c,b$ quarkonia electromagnetic form factors for the $γ^* γ^* \to χ_{Q0}$ couplings, as well as their hadroproduction observables in $k_\perp$-factorisation using the light-front potential approach for the quarkonium wave function. The electromagnetic form factors are presented as functions of photon virtualities. We discuss the role of the Melosh spin-rotation and relativistic corrections estimated by comparing our results with those in the standard nonrelativistic QCD (NRQCD) approach. Theoretical uncertainties of our approach are found by performing the analysis with two different unintegrated gluon densities and with five distinct models of the $Q\bar Q$ interaction potentials consistent with the meson spectra. The results for the rapidity and transverse momentum distributions of $χ_{Q0}$ produced in high-energy $pp$ collisions at $\sqrt{s} = 13 \, \rm{TeV}$ are shown.
