Zobrazeno 1 - 10
of 353
pro vyhledávání: '"Pochinsky A."'
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:
Leskovec, Luka, Meinel, Stefan, Petschlies, Marcus, Negele, John, Paul, Srijit, Pochinsky, Andrew, Rendon, Gumaro
Lattice Quantum Chromodynamics (QCD) has significantly contributed to our understanding of the CKM matrix through precise determinations of hadronic matrix elements. With advancements in theoretical methodologies and computational resources, investig
Externí odkaz:
http://arxiv.org/abs/2403.19543
Autor:
Rodekamp, Marcel, Engelhardt, Michael, Green, Jeremy R., Krieg, Stefan, Liuti, Simonetta, Meinel, Stefan, Negele, John W., Pochinsky, Andrew, Syritsyn, Sergey
The second Mellin moments $\langle x\rangle$ of the nucleon's unpolarized, polarized, and transversity parton distribution functions (PDFs) are computed. Two lattice QCD ensembles at the physical pion mass are used: these were generated using a tree-
Externí odkaz:
http://arxiv.org/abs/2401.05360
Autor:
Rodekamp, Marcel, Engelhardt, Michael, Green, Jeremy R., Krieg, Stefan, Meinel, Stefan, Negele, John W., Pochinsky, Andrew, Syritsyn, Sergey
We present a Lattice QCD calculation of the second Mellin moments of the nucleon axial, vector and tensor parton distribution functions (PDFs). The calculation is performed at the physical pion mass with two different lattice spacings, and includes b
Externí odkaz:
http://arxiv.org/abs/2306.14431
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:
Leskovec, Luka, Meinel, Stefan, Petschlies, Marcus, Negele, John, Paul, Srijit, Pochinsky, Andrew, Rendon, Gumaro
$V_{ub}$ is the smallest and least known of all CKM matrix elements; the community currently determines its magnitude primarily through the exclusive process $B\to\pi\ell\bar{\nu}$. Here we present our progress toward a lattice QCD determination of t
Externí odkaz:
http://arxiv.org/abs/2212.08833
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., Musch B., Bhattacharya T., Green J. R., Gupta R., Hägler P., Krieg S., Negele J., Pochinsky A., Schäfer A., Syritsyn S., Yoon B.
Publikováno v:
EPJ Web of Conferences, Vol 112, p 01008 (2016)
An ongoing program of evaluating TMD observables within Lattice QCD is reviewed, summarizing recent progress with respect to several challenges faced by such calculations. These lattice calculations are based on a definition of TMDs through hadronic
Externí odkaz:
https://doaj.org/article/52569953d5f54b6c9368410e1a259c6f
Autor:
Amarasinghe, Saman, Baghdadi, Riyadh, Davoudi, Zohreh, Detmold, William, Illa, Marc, Parreno, Assumpta, Pochinsky, Andrew V., Shanahan, Phiala E., Wagman, Michael L.
Publikováno v:
Phys. Rev. D 107, 094508 (2023)
The low-energy spectrum and scattering of two-nucleon systems are studied with lattice quantum chromodynamics using a variational approach. A wide range of interpolating operators are used: dibaryon operators built from products of plane-wave nucleon
Externí odkaz:
http://arxiv.org/abs/2108.10835
Autor:
Silvi, Giorgio, Paul, Srijit, Alexandrou, Constantia, Krieg, Stefan, Leskovec, Luka, Meinel, Stefan, Negele, John, Petschlies, Marcus, Pochinsky, Andrew, Rendon, Gumaro, Syritsyn, Sergey, Todaro, Antonino
Publikováno v:
Phys. Rev. D 103, 094508 (2021)
We determine the $\Delta(1232)$ resonance parameters using lattice QCD and the L\"uscher method. The resonance occurs in elastic pion-nucleon scattering with $J^P=3/2^+$ in the isospin $I = 3/2$, $P$-wave channel. Our calculation is performed with $N
Externí odkaz:
http://arxiv.org/abs/2101.00689