Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Egerer, Colin"'
Autor:
Dutrieux, Hervé, Edwards, Robert G., Egerer, Colin, Karpie, Joseph, Monahan, Christopher, Orginos, Kostas, Radyushkin, Anatoly, Richards, David, Romero, Eloy, Zafeiropoulos, Savvas
Publikováno v:
JHEP 08 (2024) 162
We present an exploration of the unpolarized isovector proton generalized parton distributions (GPDs) $H^{u-d}(x, \xi, t)$ and $E^{u-d}(x, \xi, t)$ in the pseudo-distribution formalism using distillation. Taking advantage of the large kinematic cover
Externí odkaz:
http://arxiv.org/abs/2405.10304
Autor:
Edwards, Robert G., Egerer, Colin, Karpie, Joseph, Karthik, Nikhil, Monahan, Christopher J., Morris, Wayne, Orginos, Kostas, Radyushkin, Anatoly, Richards, David, Romero, Eloy, Sufian, Raza Sabbir, Zafeiropoulos, Savvas
The non-singlet helicity quark parton distribution functions (PDFs) of the nucleon are determined from lattice QCD, by jointly leveraging pseudo-distributions and the distillation spatial smearing paradigm. A Lorentz decomposition of appropriately is
Externí odkaz:
http://arxiv.org/abs/2211.04434
Autor:
Egerer, Colin, Joó, Bálint, Karpie, Joseph, Karthik, Nikhil, Khan, Tanjib, Monahan, Christopher J., Morris, Wayne, Orginos, Kostas, Radyushkin, Anatoly, Richards, David G., Romero, Eloy, Sufian, Raza Sabbir, Zafeiropoulos, Savvas
We present the first exploratory lattice quantum chromodynamics (QCD) calculation of the polarized gluon Ioffe-time pseudo-distribution in the nucleon. The Ioffe-time pseudo-distribution provides a frame-independent and gauge-invariant framework to d
Externí odkaz:
http://arxiv.org/abs/2207.08733
Autor:
Egerer, Colin, Kallidonis, Christos, Karpie, Joseph, Karthik, Nikhil, Monahan, Christopher J., Morris, Wayne, Orginos, Kostas, Radyushkin, Anatoly, Romero, Eloy, Sufian, Raza Sabbir, Zafeiropoulos, Savvas
We present a determination of the non-singlet transversity parton distribution function (PDF) of the nucleon, normalized with respect to the tensor charge at $\mu^2=2$ GeV$^2$ from lattice quantum chromodynamics. We apply the pseudo-distribution appr
Externí odkaz:
http://arxiv.org/abs/2111.01808
Autor:
Khan, Tanjib, Sufian, Raza Sabbir, Karpie, Joseph, Monahan, Christopher J., Egerer, Colin, Joó, Bálint, Morris, Wayne, Orginos, Kostas, Radyushkin, Anatoly, Richards, David G., Romero, Eloy, Zafeiropoulos, Savvas
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:
http://arxiv.org/abs/2107.08960
Autor:
Egerer, Colin, Edwards, Robert G., Kallidonis, Christos, Orginos, Kostas, Radyushkin, Anatoly V., Richards, David G., Romero, Eloy, Zafeiropoulos, Savvas
We apply the Distillation spatial smearing program to the extraction of the unpolarized isovector valence PDF of the nucleon. The improved volume sampling and control of excited-states afforded by distillation leads to a dramatically improved determi
Externí odkaz:
http://arxiv.org/abs/2107.05199
Publikováno v:
Phys. Rev. D 103, 034502 (2021)
Extraction of hadronic observables at finite-momenta from Lattice QCD (LQCD) is constrained by the well-known signal-to-noise problems afflicting all such LQCD calculations. Traditional quark smearing algorithms are commonly used tools to improve the
Externí odkaz:
http://arxiv.org/abs/2009.10691
Autor:
Sufian, Raza Sabbir, Egerer, Colin, Karpie, Joseph, Edwards, Robert G., Joó, Bálint, Ma, Yan-Qing, Orginos, Kostas, Qiu, Jian-Wei, Richards, David G.
Publikováno v:
Phys. Rev. D 102, 054508 (2020)
We extract the pion valence quark distribution $q^\pi_{\rm v}(x)$ from lattice QCD (LQCD) calculated matrix elements of spacelike correlations of one vector and one axial vector current analyzed in terms of QCD collinear factorization, using a new sh
Externí odkaz:
http://arxiv.org/abs/2001.04960
Autor:
Sufian, Raza Sabbir, Karpie, Joseph, Egerer, Colin, Orginos, Kostas, Qiu, Jian-Wei, Richards, David G.
Publikováno v:
Phys. Rev. D 99, 074507 (2019)
We present the first exploratory lattice QCD calculation of the pion valence quark distribution extracted from spatially separated current-current correlations in coordinate space. We show that an antisymmetric combination of vector and axial-vector
Externí odkaz:
http://arxiv.org/abs/1901.03921
Publikováno v:
Phys. Rev. D 99, 034506 (2019)
We investigate the application of the distillation smearing approach, and the use of the variational method with an extended basis of operators facilitated by this approach, on the calculation of the nucleon isovector charges $g_S^{u-d}$, $g_A^{u-d}$
Externí odkaz:
http://arxiv.org/abs/1810.09991