Zobrazeno 1 - 10
of 765
pro vyhledávání: '"Krieg, S."'
Autor:
Engelhardt, M., Hasan, N., Krieg, S., Liuti, S., Meinel, S., Negele, J., Pochinsky, A., Rodekamp, M., Syritsyn, S.
Quark orbital angular momentum in the proton is evaluated via a Lattice QCD calculation of the second Mellin moment of the twist-3 generalized parton distribution $\widetilde{E}_{2T} $ in the forward limit. The connection between this approach to qua
Externí odkaz:
http://arxiv.org/abs/2406.00845
Autor:
Engelhardt, M., Hasan, N., Izubuchi, T., Kallidonis, C., Krieg, S., Meinel, S., Negele, J., Pochinsky, A., Silvi, G., Syritsyn, S.
Previous Lattice QCD calculations of nucleon transverse momentum-dependent parton distributions (TMDs) focused on the case of transversely polarized nucleons, and thus did not encompass two leading-twist TMDs associated with longitudinal polarization
Externí odkaz:
http://arxiv.org/abs/2301.06118
Autor:
Engelhardt, M., Green, J. R., Hasan, N., Izubuchi, T., Kallidonis, C., Krieg, S., Liuti, S., Meinel, S., Negele, J., Pochinsky, A., Rajan, A., Silvi, G., Syritsyn, S.
Generalized transverse momentum-dependent parton distributions (GTMDs) provide a comprehensive framework for imaging the internal structure of the proton. In particular, by encoding the simultaneous distribution of quark transverse positions and mome
Externí odkaz:
http://arxiv.org/abs/2112.13464
Autor:
Engelhardt, M., Green, J. R., Hasan, N., Krieg, S., Meinel, S., Negele, J., Pochinsky, A., Syritsyn, S.
Publikováno v:
Phys. Rev. D 102, 074505 (2020)
A Lattice QCD approach to quark orbital angular momentum in the proton based on generalized transverse momentum-dependent parton distributions (GTMDs) is enhanced methodologically by incorporating a direct derivative technique. This improvement remov
Externí odkaz:
http://arxiv.org/abs/2008.03660
Autor:
Engelhardt, M., Green, J., Hasan, N., Krieg, S., Meinel, S., Negele, J., Pochinsky, A., Syritsyn, S.
Publikováno v:
PoS SPIN2018 (2019) 047; PoS LATTICE2018 (2019) 115
Quark orbital angular momentum (OAM) in the proton can be calculated directly given a Wigner function encoding the simultaneous distribution of quark transverse positions and momenta. This distribution can be accessed via proton matrix elements of a
Externí odkaz:
http://arxiv.org/abs/1901.00843
Autor:
collaboration, Budapest-Marseille-Wuppertal, Borsanyi, Sz., Fodor, Z., Hoelbling, C., Kawanai, T., Krieg, S., Lellouch, L., Malak, R., Miura, K., Szabo, K. K., Torrero, C., Toth, B. C.
Publikováno v:
Phys. Rev. Lett. 121, 022002 (2018)
We compute the leading, strong-interaction contribution to the anomalous magnetic moment of the electron, muon and tau using lattice quantum chromodynamics (QCD) simulations. Calculations include the effects of $u$, $d$, $s$ and $c$ quarks and are pe
Externí odkaz:
http://arxiv.org/abs/1711.04980
Autor:
Varnhorst, L., Durr, S., Fodor, Z., Hoelbling, C., Krieg, S., Lellouch, L., Portelli, A., Sastre, A., Szabo, K. K.
We present a determination of the corrections to Dashen's theorem and of the individual up and down quark masses from a lattice calculation based on quenched QED and $N_f=2+1$ QCD simulations with 5 lattice spacings down to 0.054 fm. The simulations
Externí odkaz:
http://arxiv.org/abs/1702.00309
Autor:
Borsanyi, Sz., Fodor, Z., Kawanai, T., Krieg, S., Lellouch, L., Malak, R., Miura, K., Szabo, K. K., Torrero, C., Toth, B.
Publikováno v:
Phys. Rev. D 96, 074507 (2017)
We compute the slope and curvature, at vanishing four-momentum transfer squared, of the leading order hadron vacuum polarization function, using lattice QCD. Calculations are performed with 2+1+1 flavors of staggered fermions directly at the physical
Externí odkaz:
http://arxiv.org/abs/1612.02364
Autor:
Fodor, Z., Hoelbling, C., Krieg, S., Lellouch, L., Lippert, Th., Portelli, A., Sastre, A., Szabo, K. K., Varnhorst, L.
Publikováno v:
Phys. Rev. Lett. 117, 082001 (2016)
In a previous letter (arXiv:1306.2287) we determined the isospin mass splittings of the baryon octet from a lattice calculation based on quenched QED and $N_f{=}2{+}1$ QCD simulations with 5 lattice spacings down to $0.054~\mathrm{fm}$, lattice sizes
Externí odkaz:
http://arxiv.org/abs/1604.07112
Autor:
Durr, S., Fodor, Z., Hoelbling, C., Katz, S. D., Krieg, S., Lellouch, L., Lippert, T., Metivet, T., Portelli, A., Szabo, K. K., Torrero, C., Toth, B. C., Varnhorst, L.
Publikováno v:
Phys. Rev. Lett. 116, 172001 (2016)
We present a QCD calculation of the $u$, $d$ and $s$ scalar quark contents of nucleons based on $47$ lattice ensembles with $N_f = 2+1$ dynamical sea quarks, $5$ lattice spacings down to $0.054\,\text{fm}$, lattice sizes up to $6\,\text{fm}$ and pion
Externí odkaz:
http://arxiv.org/abs/1510.08013