107 citations · 626 across the 15 of their papers we have counts for
15 papers
Accessing proton GPDs in asymmetric frames: Numerical implementation
Martha Constantinou, Shohini Bhattacharya, Krzysztof Cichy +7
In this work, we present a numerical investigation of a novel Lorentz-covariant parametrization to extract -dependent GPDs using off-forward matrix elements of momentum-boosted…
Generalized Parton Distributions from Lattice QCD with Asymmetric Momentum Transfer: Unpolarized Quarks
Shohini Bhattacharya, Krzysztof Cichy, Martha Constantinou +7
Traditionally, lattice QCD computations of generalized parton distributions (GPDs) have been carried out in a symmetric frame, where the transferred momentum is symmetrically distr…
Continuum-extrapolated NNLO Valence PDF of Pion at the Physical Point
Xiang Gao, Andrew D. Hanlon, Nikhil Karthik +7
We present lattice QCD calculations of valence parton distribution function (PDF) of pion employing next-to-next-leading-order (NNLO) perturbative QCD matching. Our calculations ar…
Pion distribution amplitude at the physical point using the leading-twist expansion of the quasi-distribution-amplitude matrix element
Xiang Gao, Andrew D. Hanlon, Nikhil Karthik +5
We present a lattice QCD determination of the distribution amplitude (DA) of the pion and the first few Mellin moments from an analysis of the quasi-DA matrix element within the le…
Lattice QCD Determination of the Bjorken- Dependence of Parton Distribution Functions at Next-to-next-to-leading Order
Xiang Gao, Andrew D. Hanlon, Swagato Mukherjee +4
We report the first lattice QCD calculation of pion valence quark distribution with next-to-next-to-leading order perturbative matching correction, which is done using two fine lat…
Towards studying the structural differences between the pion and its radial excitation
Xiang Gao, Nikhil Karthik, Swagato Mukherjee +3
We present an exploratory lattice QCD investigation of the differences between the valence quark structure of pion and its radial excitation in a fixed finite volume usin…
Pion form factor and charge radius from Lattice QCD at physical point
Xiang Gao, Nikhil Karthik, Swagato Mukherjee +3
We present our results on the electromagnetic form factor of pion over a wide range of using lattice QCD simulations with Wilson-clover valence quarks and HISQ sea quarks. We…
Origin and Resummation of Threshold Logarithms in the Lattice QCD Calculations of PDFs
Xiang Gao, Kyle Lee, Swagato Mukherjee +2
Many present lattice QCD approaches to calculate the parton distribution functions (PDFs) rely on a factorization formula or effective theory expansion of certain Euclidean matrix…
Valence parton distribution of pion from lattice QCD: Approaching continuum
Xiang Gao, Luchang Jin, Christos Kallidonis +6
We present a high-statistics lattice QCD determination of the valence parton distribution function (PDF) of the pion, with a mass of 300 MeV, using two very fine lattice spacings o…
Isovector parton distribution functions of the proton on a superfine lattice
Zhouyou Fan, Xiang Gao, Ruizi Li +7
We study isovector unpolarized and helicity parton distribution functions (PDF) of the proton within the framework of Large Momentum Effective Theory. We use a gauge ensemble, gene…
Theory of Subcycle Linear Momentum Transfer in Strong-Field Tunneling Ionization
Hongcheng Ni, Simon Brennecke, Xiang Gao +8
Interaction of a strong laser pulse with matter transfers not only energy but also linear momentum of the photons. Recent experimental advances have made it possible to detect the…
Pion valence quark PDF from lattice QCD
Charles Shugert, Xiang Gao, Taku Izubichi +7
We present lattice results on the valence-quark structure of the pion using a coordinate space method within the framework of Large Momentum Effective Theory (LaMET). In this metho…
Strong Modification of Radiative Transition Rates due to a Breit-Interaction-Induced Avoided Crossing
Zhimin Hu, Gang Xiong, Xiang Gao +11
We present the observations of x-rays emitted from the inner shell excited state of B-like W and Bi ions. The relative transition rates are obtained for…
Revealing Energy Dependence of Quantum Defects via Two Heteronuclear Atoms in an Optical Tweezer
Kunpeng Wang, Xiaodong He, Xiang Gao +8
As a physically motivated and computationally simple model for cold atomic and molecular collisions, the multichannel quantum defect theory (MQDT) with frame transformation (FT) fo…
Towards Fully Converged GW Calculations for Large Systems
Weiwei Gao, Weiyi Xia, Xiang Gao +1
Although the GW approximation is recognized as one of the most accurate theories for predicting materials excited states properties, scaling up conventional GW calculations for lar…