Zobrazeno 1 - 10
of 193
pro vyhledávání: '"Heitger Jochen"'
Estimating decay parameters in lattice simulations is a computationally demanding problem, requiring several volumes and momenta. We explore an alternative approach, where the transition amplitude can be extracted from the spectral decomposition of p
Externí odkaz:
http://arxiv.org/abs/2411.10123
We present results for the leptonic decay constants of the D and D$_{\rm s}$ mesons from $N_{\rm f}=2+1$ lattice QCD. We employ a set of 49 high statistics gauge ensembles generated by the Coordinated Lattice Simulations (CLS) effort utilising non-pe
Externí odkaz:
http://arxiv.org/abs/2405.04506
We report on a first study towards the use of stabilised Wilson fermions in heavy flavour physics. In particular, we are interested in fixing the charm quark mass via various physical observables and to inspect cut-off effects arising from different
Externí odkaz:
http://arxiv.org/abs/2401.05885
Autor:
Neuendorf, Jan, Egbring, Giulia, Heitger, Jochen, Höllwieser, Roman, Knechtli, Francesco, Korzec, Tomasz, Urrea-Niño, Juan Andrés
It has been demonstrated that distillation profiles can be employed to build optimized quarkonium interpolators for spectroscopy calculations in lattice QCD. We test their usefulness for heavy-light systems on (3+1)-flavor ensembles with mass-degener
Externí odkaz:
http://arxiv.org/abs/2401.05828
Autor:
Conigli, Alessandro, Frison, Julien, Fritzsch, Patrick, Gérardin, Antoine, Heitger, Jochen, Herdoiza, Gregorio, Kuberski, Simon, Pena, Carlos, Simma, Hubert, Sommer, Rainer
In a somewhat forgotten paper [1] it was shown how to perform interpolations between relativistic and static computations in order to obtain results for heavy-light observables for masses from, say, $m_{\rm charm}$ to $m_{\rm bottom}$. All quantities
Externí odkaz:
http://arxiv.org/abs/2312.09811
Autor:
Conigli, Alessandro, Frison, Julien, Fritzsch, Patrick, Gérardin, Antoine, Heitger, Jochen, Herdoiza, Gregorio, Kuberski, Simon, Pena, Carlos, Simma, Hubert, Sommer, Rainer
We present preliminary results for B-physics from a combination of non-perturbative results in the static limit with relativistic computations satisfying $am_{\mathrm{heavy}}\ll 1$. Relativistic measurements are carried out at the physical b-quark ma
Externí odkaz:
http://arxiv.org/abs/2312.10017
Autor:
Petrak, Pia Leonie Jones, Bali, Gunnar, Collins, Sara, Heitger, Jochen, Jenkins, Daniel, Weishäupl, Simon
A lot of progress has been made in the direct determination of nucleon sigma terms. Using similar methods, we consider the sigma terms of the other octet baryons as well. These are determined on CLS gauge field ensembles employing the L\"uscher-Weisz
Externí odkaz:
http://arxiv.org/abs/2301.03871
Publikováno v:
EPJ Web of Conferences, Vol 175, p 10004 (2018)
We report on non-perturbative computations of the improvement coefficient cV and the renormalization factor ZV of the vector current in three-flavour O(a) improved lattice QCD with Wilson quarks and tree-level Symanzik improved gauge action. To reduc
Externí odkaz:
https://doaj.org/article/893309cce53a4bab85dff4441ceead58
Publikováno v:
EPJ Web of Conferences, Vol 175, p 13002 (2018)
Among the different scenarios of New Physics, those with an extended Higgs sector are examined with a lot of attention. Recent experimental observations of several anomalies in flavour physics with respect to expectations of the Standard Model furthe
Externí odkaz:
https://doaj.org/article/91ec1dceeadc448ead2e948cfb75938f
Autor:
de Divitiis Giulia Maria, Firrotta Maurizio, Heitger Jochen, Köster Carl Christian, Vladikas Anastassios
Publikováno v:
EPJ Web of Conferences, Vol 175, p 10008 (2018)
We present our preliminary results of the non-perturbative determination of the valence mass dependent coefficients bA - bP and bm as well as the ratio ZPZm=ZA entering the flavour non-singlet PCAC relation in lattice QCD with Nf = 3 dynamical flavou
Externí odkaz:
https://doaj.org/article/a924e8afff6840988a7ba609c8c42ac6