The ρ-resonance from Nf = 2 lattice QCD including the physical pion mass

Autor: Matthias Fischer, Bartosz Kostrzewa, Maxim Mai, Marcus Petschlies, Ferenc Pittler, Martin Ueding, Carsten Urbach, Markus Werner

Publikováno v: Physics Letters B, Vol 819, Iss , Pp 136449- (2021)

We present a lattice computation of ππ–scattering in the I=1 channel with Nf=2 dynamical quark flavours obtained with ensembles bracketing the physical value of the pion mass. Employing a global fit to data at three values of the pion mass, we de

Externí odkaz: https://doaj.org/article/ba83dc6e1e3843c980f3d12a697b3f45

Elastic π − N scattering in the I = 3/2 channel

Autor: Ferenc Pittler, Constantia Alexandrou, Kyriakos Hadjiannakou, Giannis Koutsou, Srijit Paul, Marcus Petschlies, Antonino Todaro

Publikováno v: Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa492193b79b8d7d25dce3d9be3f48f2
https://doi.org/10.22323/1.396.0226

Lattice QCD results for the topological up-quark mass contribution: too small to rescue the $m_u=0$ solution to the strong CP problem

Autor: Lena Funcke, Constantia Alexandrou, Jacob Finkenrath, Karl Jansen, Bartosz Kostrzewa, Ferenc Pittler, Carsten Urbach

Publikováno v: Proceedings of Science / International School for Advanced Studies (LATTICE2021), 352 (2022). doi:10.22323/1.396.0352
38th International Symposium on Lattice Field Theory, Lattice 2021, Online, United States, 2021-07-26-2021-07-30

38th International Symposium on Lattice Field Theory, Lattice 2021, Online, United States, 26 Jul 2021 - 30 Jul 2021; Proceedings of Science / International School for Advanced Studies (LATTICE2021), 352 (2022). doi:10.22323/1.396.0352
A vanishi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be3f45082bedc4ff2c1d4158f502e6da

Hadron-Hadron Interactions from $N_f = 2 + 1 + 1$ Lattice QCD: $\pi-K$ scattering length

Autor: Ferenc Pittler

Publikováno v: Proceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018).

In this proceeding we perform a separate chiral and continuum extrapolation of the scattering length for the $\pi-K$ scattering in the maximal isospin channel $I_3=\frac{3}{2}$. In order to verify our approach, we extrapolate separately the meson par

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::67ec972abca5378a08e624cf975a67a9
https://doi.org/10.22323/1.334.0072

Testing a non-perturbative mechanism for elementary fermion mass generation: lattice setup

Autor: Bastian Knippschild, Ferenc Pittler, Giancarlo Rossi, Bartosz Kostrzewa, Petros Dimopoulos, Giulia Maria de Divitiis, Marco Garofalo, Carsten Urbach, Stefano Capitani, Roberto Frezzotti

Publikováno v: EPJ Web of Conferences, Vol 175, p 08009 (2018)

In this contribution we lay down a lattice setup that allows for the non-perturbative study of a field theoretical model where a SU(2) fermion doublet, subjected to non-Abelian gauge interactions, is also coupled to a complex scalar field doublet via

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fdb4657b0d507e4e058cde87b9cb986
http://publikationen.ub.uni-frankfurt.de/files/49326/epjconf_lattice2018_08009.pdf