254 citations · 3.5k across the 63 of their papers we have counts for
63 papers
Collins-Soper kernel from lattice QCD at the physical pion mass
Artur Avkhadiev, Phiala Shanahan, Michael Wagman +1
This work presents a determination of the quark Collins-Soper kernel, which relates transverse-momentum-dependent parton distributions (TMDs) at different rapidity scales, using la…
Parton Distributions from Boosted Fields in the Coulomb Gauge
Xiang Gao, Wei-Yang Liu, Yong Zhao
We propose a new method to calculate parton distribution functions (PDFs) from lattice correlations of boosted quarks and gluons in the Coulomb gauge. Compared to the widely used g…
The case for an EIC Theory Alliance: Theoretical Challenges of the EIC
Raktim Abir, Igor Akushevich, Tolga Altinoluk +167
We outline the physics opportunities provided by the Electron Ion Collider (EIC). These include the study of the parton structure of the nucleon and nuclei, the onset of gluon satu…
Moments of proton GPDs from the OPE of nonlocal quark bilinears up to NNLO
Shohini Bhattacharya, Krzysztof Cichy, Martha Constantinou +7
For the first time, we present a lattice QCD determination of Mellin moments of unpolarized generalized parton distributions (GPDs) of the proton from an analysis of the quasi-GPD…
Generalized Parton Distributions from Lattice QCD
Krzysztof Cichy, Shohini Bhattacharya, Martha Constantinou +8
In recent years, there has been a breakthrough in lattice calculations of -dependent partonic distributions. This encompasses also distributions describing the 3D structure of t…
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…
Progress in calculation of the fourth Mellin moment of the pion light-cone distribution amplitude using the HOPE method
William Detmold, Anthony V. Grebe, Issaku Kanamori +3
The pion light-cone distribution amplitude (LCDA) is a central non-perturbative object of interest for the calculation of high-energy exclusive processes in quantum chromodynamics.…
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…
Lattice QCD and Particle Physics
Andreas S. Kronfeld, Tanmoy Bhattacharya, Thomas Blum +79
Contribution from the USQCD Collaboration to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021).
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…
One-loop matching for gluon lattice TMDs
Stella T. Schindler, Iain W. Stewart, Yong Zhao
Transverse-momentum-dependent parton distributions (TMDs) can be calculated from first principles by computing a related set of Euclidean lattice observables and connecting them vi…
Lattice QCD Calculations of Parton Physics
Martha Constantinou, Luigi Del Debbio, Xiangdong Ji +12
In this document, we summarize the status and challenges of calculating parton physics in lattice QCD for the US Particle Physics Community Planning Exercise (a.k.a. "Snowmass"). W…
Factorization connecting continuum and lattice TMDs
Markus A. Ebert, Stella T. Schindler, Iain W. Stewart +1
Transverse-momentum-dependent parton distribution functions (TMDs) can be studied from first principles by a perturbative matching onto lattice-calculable quantities: so-called lat…
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…
Progress in the determination of Mellin moments of the pion LCDA using the HOPE method
William Detmold, Anthony V. Grebe, Issaku Kanamori +4
The pion light-cone distribution amplitude (LCDA) is a central non-perturbative object of interest for the calculation of high-energy exclusive processes in quantum chromodynamics.…
Parton physics from a heavy-quark operator product expansion: Lattice QCD calculation of the second moment of the pion distribution amplitude
William Detmold, Anthony Grebe, Issaku Kanamori +4
The pion light-cone distribution amplitude (LCDA) is a central non-perturbative object of interest for high-energy exclusive processes in quantum chromodynamics. In this article, t…
Lattice QCD calculation of the Collins-Soper kernel from quasi TMDPDFs
Phiala Shanahan, Michael Wagman, Yong Zhao
This work presents a lattice quantum chromodynamics (QCD) calculation of the nonperturbative Collins-Soper kernel, which describes the rapidity evolution of quark transverse-moment…
Parton physics from a heavy-quark operator product expansion: Formalism and Wilson coefficients
William Detmold, Anthony V. Grebe, Issaku Kanamori +3
Parton distribution functions (PDFs) and light-cone distribution amplitudes (LCDAs) are central non-perturbative objects of interest in high-energy inelastic and elastic scattering…
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…
A Preliminary Determination of the Second Mellin Moment of the Pion's Distribution Amplitude Using the Heavy Quark Operator Product Expansion
William Detmold, Anthony V. Grebe, Issaku Kanamori +4
We explore the feasibility of determining Mellin moments of the pion's light cone distribution amplitude using the heavy quark operator product expansion (HOPE) method. As the firs…
Proton spin after 30 years: what we know and what we don't?
Xiangdong Ji, Feng Yuan, Yong Zhao
More than three decades has passed since the European Muon Collaboration published the first surprising result on the spin structure of the proton. Much theoretical and experimenta…