Zobrazeno 1 - 10
of 440
pro vyhledávání: '"Orginos K"'
Lattice QCD offers the possibility of computing parton distributions from first principles, although not in the usual $\overline{MS}$ factorization scheme. We study in this paper the evolution of non-singlet parton distribution functions (PDFs) in th
Externí odkaz:
http://arxiv.org/abs/2310.19926
Autor:
Karpie, J., Whitehill, R. M., Melnitchouk, W., Monahan, C., Orginos, K., Qiu, J. -W., Richards, D. G., Sato, N., Zafeiropoulos, S.
We perform a new global analysis of spin-dependent parton distribution functions with the inclusion of Ioffe time pseudo-distributions computed in lattice QCD (LQCD), which are directly sensitive to the gluon helicity distribution, $\Delta g$. These
Externí odkaz:
http://arxiv.org/abs/2310.18179
Autor:
Barry, P. C., Egerer, C., Karpie, J., Melnitchouk, W., Monahan, C., Orginos, K., Qiu, Jian-Wei, Richards, D., Sato, N., Sufian, R. S., Zafeiropoulos, S.
We extract pion parton distribution functions (PDFs) in a Monte Carlo global QCD analysis of experimental data together with reduced Ioffe time pseudo-distributions and matrix elements of current-current correlators generated from lattice QCD. By inc
Externí odkaz:
http://arxiv.org/abs/2204.00543
Autor:
Beane, S. R., Chang, E., Cohen, S. D., Detmold, W., Lin, H. -W., Orginos, K., Parreño, A., Savage, M. J.
Publikováno v:
Phys. Rev. D 91, 114503 (2015)
Quarkonium-nucleus systems are composed of two interacting hadronic states without common valence quarks, which interact primarily through multi-gluon exchanges, realizing a color van der Waals force. We present lattice QCD calculations of the intera
Externí odkaz:
http://arxiv.org/abs/1410.7069
Autor:
Beane, S. R., Chang, E., Cohen, S., Detmold, W., Lin, H. W., Orginos, K., Parreno, A., Savage, M. J., Tiburzi, B. C.
Publikováno v:
Phys. Rev. Lett. 113, 252001 (2014)
We present the results of lattice QCD calculations of the magnetic moments of the lightest nuclei, the deuteron, the triton and ${}^3$He, along with those of the neutron and proton. These calculations, performed at quark masses corresponding to $m_\p
Externí odkaz:
http://arxiv.org/abs/1409.3556
Autor:
Beane, S. R., Chang, E., Cohen, S. D., Detmold, W., Junnarkar, P., Lin, H. W., Luu, T. C., Orginos, K., Parreno, A., Savage, M. J., Walker-Loud, A.
The scattering lengths and effective ranges that describe low-energy nucleon-nucleon scattering are calculated in the limit of SU(3)-flavor symmetry at the physical strange-quark mass with Lattice Quantum Chromodynamics. The calculations are performe
Externí odkaz:
http://arxiv.org/abs/1301.5790
Autor:
Beane, S. R., Chang, E., Cohen, S. D., Detmold, W., Lin, H. W., Luu, T. C., Orginos, K., Parreno, A., Savage, M. J., Walker-Loud, A.
The binding energies of a range of nuclei and hypernuclei with atomic number A <= 4 and strangeness |s| <= 2, including the deuteron, di-neutron, H-dibaryon, 3He, Lambda 3He, Lambda 4He, and Lambda Lambda 4He, are calculated in the limit of flavor-SU
Externí odkaz:
http://arxiv.org/abs/1206.5219
Hyperon-Nucleon Interactions and the Composition of Dense Nuclear Matter from Quantum Chromodynamics
Autor:
Beane, S. R., Chang, E., Cohen, S. D., Detmold, W., Lin, H. -W., Luu, T. C., Orginos, K., Parreno, A., Savage, M. J., Walker-Loud, A.
The low-energy neutron-Sigma^- interactions determine, in part, the role of the strange quark in dense matter, such as that found in astrophysical environments. The scattering phase shifts for this system are obtained from a numerical evaluation of t
Externí odkaz:
http://arxiv.org/abs/1204.3606
Autor:
Beane, S. R., Chang, E., Detmold, W., Lin, H. W., Luu, T. C., Orginos, K., Parreno, A., Savage, M. J., Torok, A., Walker-Loud, A.
Results of a high-statistics, multi-volume Lattice QCD exploration of the deuteron, the di-neutron, the H-dibaryon, and the Xi-Xi- system at a pion mass of m ~ 390 MeV are presented. Calculations were performed with an anisotropic n_f = 2+1 Clover di
Externí odkaz:
http://arxiv.org/abs/1109.2889
Autor:
Beane, S. R., Detmold, W., Junnarkar, P. M., Luu, T. C., Orginos, K., Parreno, A., Savage, M. J., Torok, A., Walker-Loud, A.
Publikováno v:
Phys.Rev.D86:094509,2012
An analysis of the pion mass and pion decay constant is performed using mixed-action Lattice QCD calculations with domain-wall valence quarks on ensembles of rooted, staggered n_f = 2+1 MILC configurations. Calculations were performed at two lattice
Externí odkaz:
http://arxiv.org/abs/1108.1380