Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Glässle, Benjamin"'
Publikováno v:
JHEP09(2021)106
We evaluate nucleon four-point functions in the framework of lattice QCD in order to extract the first Mellin moment of double parton distributions (DPDs) in the unpolarized proton. In this first study, we employ an nf = 2 + 1 ensemble with pseudosca
Externí odkaz:
http://arxiv.org/abs/2106.03451
Autor:
Bali, Gunnar S., Castagnini, Luca, Diehl, Markus, Gaunt, Jonathan R., Gläßle, Benjamin, Schäfer, Andreas, Zimmermann, Christian
We perform a lattice study of double parton distributions in the pion, using the relationship between their Mellin moments and pion matrix elements of two local currents. A good statistical signal is obtained for almost all relevant Wick contractions
Externí odkaz:
http://arxiv.org/abs/2006.14826
Autor:
Bali, Gunnar S., Braun, Vladimir M., Gläßle, Benjamin, Göckeler, Meinulf, Gruber, Michael, Hutzler, Fabian, Korcyl, Piotr, Schäfer, Andreas, Wein, Philipp, Zhang, Jian-Hui
Publikováno v:
Phys. Rev. D 98, 094507 (2018)
Building upon our recent study arXiv:1709.04325, we investigate the feasibility of calculating the pion distribution amplitude from suitably chosen Euclidean correlation functions at large momentum. We demonstrate in this work the advantage of analyz
Externí odkaz:
http://arxiv.org/abs/1807.06671
Publikováno v:
Phys. Rev. Lett. 121, 072001 (2018)
The leptonic decay of charged pions is investigated in the presence of background magnetic fields. In this situation Lorentz symmetry is broken and new fundamental decay constants need to be introduced, associated with the decay via the vector part o
Externí odkaz:
http://arxiv.org/abs/1805.10971
Autor:
Bali, Gunnar S., Collins, Sara, Glässle, Benjamin, Heybrock, Simon, Korcyl, Piotr, Löffler, Marius, Rödl, Rudolf, Schäfer, Andreas
We have implemented a new way of computing three-point correlation functions. It is based on a factorization of the entire correlation function into two parts which are evaluated with open spin- (and to some extent flavor-) indices. This allows us to
Externí odkaz:
http://arxiv.org/abs/1711.02384
The leptonic decay of the charged pion in the presence of background magnetic fields is investigated using quenched Wilson fermions. It is demonstrated that the magnetic field opens up a new channel for this decay. The magnetic field-dependence of th
Externí odkaz:
http://arxiv.org/abs/1710.01502
Autor:
Bali, Gunnar S., Braun, Vladimir M., Gläßle, Benjamin, Göckeler, Meinulf, Gruber, Michael, Hutzler, Fabian, Korcyl, Piotr, Lang, Bernhard, Schäfer, Andreas, Wein, Philipp, Zhang, Jian-Hui
Publikováno v:
Eur. Phys. J. C78 (2018) 217
Following the proposal in [1], we study the feasibility to calculate the pion distribution amplitude (DA) from suitably chosen Euclidean correlation functions at large momentum. In our lattice study we employ the novel momentum smearing technique [2,
Externí odkaz:
http://arxiv.org/abs/1709.04325
Publikováno v:
Phys. Rev. D 97, 034505 (2018)
We determine the light meson spectrum in QCD in the presence of background magnetic fields using quenched Wilson fermions. Our continuum extrapolated results indicate a monotonous reduction of the connected neutral pion mass as the magnetic field gro
Externí odkaz:
http://arxiv.org/abs/1707.05600
We study the change of the QCD spectrum of low-lying mesons in the presence of an external magnetic field using Wilson fermions in the quenched approximation. Motivated by qualitative differences observed in the spectra of overlap and Wilson fermions
Externí odkaz:
http://arxiv.org/abs/1510.03899
Autor:
Arts, Paul, Bloch, Jacques, Georg, Peter, Glaessle, Benjamin, Heybrock, Simon, Komatsubara, Yu, Lohmayer, Robert, Mages, Simon, Mendl, Bernhard, Meyer, Nils, Parcianello, Alessio, Pleiter, Dirk, Rappl, Florian, Rossi, Mauro, Solbrig, Stefan, Tecchiolli, Giampietro, Wettig, Tilo, Zanier, Gianpaolo
We give an overview of QPACE 2, which is a custom-designed supercomputer based on Intel Xeon Phi processors, developed in a collaboration of Regensburg University and Eurotech. We give some general recommendations for how to write high-performance co
Externí odkaz:
http://arxiv.org/abs/1502.04025