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pro vyhledávání: '"A, Heitger"'
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
Hadronic matrix elements involving tensor currents play an important r\^ole in decays that allow to probe the consistency of the Standard Model via precision lattice QCD calculations. The non-singlet tensor current is a scale-dependent (anomalous) qu
Externí odkaz:
http://arxiv.org/abs/2309.04314
Autor:
Leonardo Chimirri, Patrick Fritzsch, Jochen Heitger, Fabian Joswig, Marco Panero, Carlos Pena, David Preti
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-42 (2024)
Abstract Hadronic matrix elements involving tensor currents play an important rôle in decays that allow to probe the consistency of the Standard Model via precision lattice QCD calculations. The non-singlet tensor current is a scale-dependent (anoma
Externí odkaz:
https://doaj.org/article/b0a84450e67c4e1bbaacb3c94281b407
Autor:
The RQCD collaboration and the ALPHA collaboration, Simon Kuberski, Fabian Joswig, Sara Collins, Jochen Heitger, Wolfgang Söldner
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-44 (2024)
Abstract We present results for the leptonic decay constants of the D and Ds mesons from N 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-pertur
Externí odkaz:
https://doaj.org/article/e2db68b22e7a4b1d8fd4250b9479fef3
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
Our exploratory study looks for direct access to the resonant hadronic transition amplitude without resorting to the L\"uscher formalism. We study the decay $\Psi(3770)\to\bar{D}D$ by applying partially twisted boundary conditions to the quenched cha
Externí odkaz:
http://arxiv.org/abs/2212.11206