Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Metsch, Bernard"'
Publikováno v:
Eur. Phys. J. A (2024) 60:200
We study the fine-structure constant dependence of the rates of some selected radiative capture reactions within the framework of so-called Halo Effective Field Theory in order to assess the adequacy of some assumptions made on the Coulomb penetrabil
Externí odkaz:
http://arxiv.org/abs/2405.09971
We study the dependence of the primordial nuclear abundances as a function of the electromagnetic fine-structure constant $\alpha$, keeping all other fundamental constants fixed. We update the leading nuclear reaction rates, in particular the electro
Externí odkaz:
http://arxiv.org/abs/2305.15849
Autor:
Meißner, Ulf-G., Metsch, Bernard Ch.
We study the dependence of primordial nuclear abundances on fundamental nuclear observables such as binding energies, scattering lengths, neutron lifetime, \textit{etc.} by varying these quantities. The numerical computations were performed with four
Externí odkaz:
http://arxiv.org/abs/2208.12600
Akademický článek
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Autor:
Werner, Markus, Ueding, Martin, Helmes, Christopher, Jost, Christian, Knippschild, Bastian, Kostrzewa, Bartosz, Liu, Chuan, Liu, Liuming, Metsch, Bernard, Petschlies, Marcus, Urbach, Carsten
Publikováno v:
Eur.Phys.J.A 56 (2020) 2, 61
We present an investigation of the Rho-meson from Nf=2+1+1 flavour lattice QCD. The calculation is performed based on gauge configuration ensembles produced by the ETM collaboration with three lattice spacing values and pion masses ranging from 230 M
Externí odkaz:
http://arxiv.org/abs/1907.01237
Autor:
Ronniger, Michael, Metsch, Bernard Ch.
Publikováno v:
Eur. Phys. J A 49, 8 (2013)
This paper is a continuation of previous work about the effects of a phenomenological flavour dependent force in a relativistically covariant constituent quark model based on the Salpeter equation on the structure of light-flavoured baryon resonances
Externí odkaz:
http://arxiv.org/abs/1207.2640
Autor:
Ronniger, Michael, Metsch, Bernard Ch.
Publikováno v:
Eur.Phys.J. A47 (2011) 162
The effective quark interaction in a relativistically covariant constituent quark model based on the Salpeter equation is supplemented by an extra phenomenological flavour dependent force in order to account for some discrepancies mainly in the descr
Externí odkaz:
http://arxiv.org/abs/1111.3835
Publikováno v:
Eur.Phys.J. A28 (2006) 41
We calculate mass spectra of charmed baryons within a relativistically covariant quark model based on the Bethe-Salpeter-equation in instantaneous approximation. Interactions are given by a linearly rising three-body confinement potential and a flavo
Externí odkaz:
http://arxiv.org/abs/hep-ph/0602153
Publikováno v:
Eur.Phys.J. A28 (2006) 213-225
We show that static properties like the charge radius and the magnetic moment of relativistic three-fermion bound states with instantaneous interactions can be formulated as expectation values with respect to intrinsically defined wavefunctions. The
Externí odkaz:
http://arxiv.org/abs/hep-ph/0602151
Publikováno v:
Eur.Phys.J. A28 (2006) 55
We calculate semileptonic decays of light and heavy baryons in a relativistically covariant constituent quark model. The model is based on the Bethe-Salpeter-equation in instantaneous approximation. It generates satisfactory mass spectra for mesons a
Externí odkaz:
http://arxiv.org/abs/hep-ph/0602152