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One-Loop Matching for Parton Distributions: Non-Singlet Case
Xiaonu Xiong, Xiangdong Ji, Jian-Hui Zhang +1
We derive one-loop matching condition for non-singlet quark distributions in transverse-momentum cut-off scheme, including unpolarized, helicity and transversity distributions. The…
Gluon Helicity Delta G from a Universality Class of Operators on a Lattice
Yoshitaka Hatta, Xiangdong Ji, Yong Zhao
We show that the total gluon helicity in a polarized nucleon can be calculated on a Euclidean lattice through a universality class of QCD operators that describe the helicity…
Ionization Yield from Nuclear Recoils in Liquid-Xenon Dark Matter Detection
Wei Mu, Xiangdong Ji
The ionization yield in the two-phase liquid xenon dark-matter detector has been studied in keV nuclear-recoil energy region. The newly-obtained nuclear quenching as well as the re…
A Naturally Light Sterile neutrino in an Asymmetric Dark Matter Model
Yongchao Zhang, Xiangdong Ji, Rabindra N. Mohapatra
A recently proposed asymmetric mirror dark matter model where the mirror sector is connected with the visible one by a right handed neutrino portal, is shown to lead naturally to a…
Scintillation Efficiency for Low-Energy Nuclear Recoils in Liquid-Xenon Dark Matter Detectors
Wei Mu, Xiaonu Xiong, Xiangdong Ji
We perform a theoretical study of the scintillation efficiency in the low-energy region crucial for liquid-xenon dark-matter detectors. We develop a computer program to simulate th…
Parton Physics on Euclidean Lattice
Xiangdong Ji
I show that the parton physics related to correlations of quarks and gluons on the light-cone can be studied through the matrix elements of frame-dependent, equal-time correlators…