Parton distribution functions from Ioffe time pseudo-distributions

Autor: Bálint Joó, Joseph Karpie, Kostas Orginos, Anatoly Radyushkin, David Richards, Savvas Zafeiropoulos

Publikováno v: Journal of High Energy Physics, Vol 2019, Iss 12, Pp 1-44 (2019)

Abstract In this paper, we present a detailed study of the unpolarized nucleon parton distribution function (PDF) employing the approach of parton pseudo-distribution func- tions. We perform a systematic analysis using three lattice ensembles at two

Externí odkaz: https://doaj.org/article/85458cd6980d47508dc52f776e5a91bb

Unpolarized gluon distribution in the nucleon from lattice quantum chromodynamics

Autor: Christopher J. Monahan, Anatoly Radyushkin, Eloy Romero, Savvas Zafeiropoulos, Kostas Orginos, Joseph Karpie, Wayne Morris, Raza Sabbir Sufian, Bálint Joó, David G. Richards, Tanjib Khan, Colin Egerer

Publikováno v: Phys.Rev.D
Phys.Rev.D, 2021, 104 (9), pp.094516. ⟨10.1103/PhysRevD.104.094516⟩
Physical Review

In this study, we present a determination of the unpolarized gluon Ioffe-time distribution in the nucleon from a first principles lattice quantum chromodynamics calculation. We carry out the lattice calculation on a $32^3\times 64$ ensemble with a pi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::989e75ceb4ae66d486c9ddde01279588
https://hal.archives-ouvertes.fr/hal-03313186

Two-nucleon higher partial-wave scattering from lattice QCD

Autor: Thorsten Kurth, Evan Berkowitz, Mark Strother, Andre Walker-Loud, Amy Nicholson, Pavlos Vranas, Enrico Rinaldi, Bálint Joó

Publikováno v: Berkowitz, E; Kurth, T; Nicholson, A; Joó, B; Rinaldi, E; Strother, M; et al.(2017). Two-nucleon higher partial-wave scattering from lattice QCD. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 765, 285-292. doi: 10.1016/j.physletb.2016.12.024. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/50d1f6mx
Physics Letters B
Physics Letters B, Vol 765, Iss C, Pp 285-292 (2017)

We present a determination of nucleon-nucleon scattering phase shifts for l >= 0. The S, P, D and F phase shifts for both the spin-triplet and spin-singlet channels are computed with lattice Quantum ChromoDynamics. For l > 0, this is the first lattic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d56f034942f0cbb2eded41aba560b3b8
https://doi.org/10.1016/j.physletb.2016.12.024

Pion valence structure from Ioffe-time parton pseudodistribution functions

Autor: David G. Richards, Joseph Karpie, Savvas Zafeiropoulos, Anatoly Radyushkin, Raza Sabbir Sufian, Kostas Orginos, Bálint Joó

Publikováno v: Physical Review D
Physical Review D, American Physical Society, 2019, 100 (11), pp.114512. ⟨10.1103/PhysRevD.100.114512⟩
Phys.Rev.D
Phys.Rev.D, 2019, 100 (11), pp.114512. ⟨10.1103/PhysRevD.100.114512⟩
Physical Review

We present a calculation of the pion valence quark distribution extracted using the formalism of reduced Ioffe-time pseudodistributions or more commonly known as pseudo-PDFs. Our calculation is carried out on two different 2+1 flavor QCD ensembles us

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6912f0bf3c7519ef4c1505b9c73ff64a
https://hal.archives-ouvertes.fr/hal-02403748

Lessons Learned from Optimizing Kernels for Adaptive Aggregation Multi-grid Solvers in Lattice QCD

Autor: Bálint Joó, Thorsten Kurth

Publikováno v: Lecture Notes in Computer Science ISBN: 9783030024642
ISC Workshops

In recent years, adaptive aggregation multi-grid (AAMG) methods have become the gold standard for solving the Dirac equation in Lattice QCD (LQCD) using Wilson-Clover fermions. These methods are able to overcome the critical slowing down as quark mas

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::95f3399cbd4572b5e4f9a0075410aeae
https://doi.org/10.1007/978-3-030-02465-9_34