Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Bernard Metsch"'
Autor:
Martin Ueding, Christopher Helmes, Bartosz Kostrzewa, Markus Werner, Bernard Metsch, Christian Jost, Bastian Knippschild, Marcus Petschlies, Liuming Liu, Carsten Urbach, Chuan Liu
Publikováno v:
The European Physical Journal A. 56
We present a lattice QCD investigation of the $$\rho $$ρ-meson with $$N_\mathrm{{f}}=2+1+1$$Nf=2+1+1 dynamical quark flavours for the first time. The calculation is performed based on gauge configuration ensembles produced by the ETM Collaboration w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb3f04642fc42adb63ea49305ac73e85
https://doi.org/10.1140/epja/s10050-020-00057-4
https://doi.org/10.1140/epja/s10050-020-00057-4
Autor:
Frank Klein, V. Sokhoyan, A. Wilson, E. Gutz, M. Pfeiffer, S. Shende, J. Junkersfeld, J. G. Messchendorp, R. Beck, D. V. Novinski, Ch. Schmidt, M. Kotulla, D. Walther, V. A. Nikonov, R. Castelijns, Matthew Lang, Wolfgang Hillert, A. Thiel, A. V. Anisovich, I. Horn, S. Lugert, H. Kalinowsky, Cbelsa, U. Thoma, Eberhard Klempt, B. Bantes, V. Kleber, D. Elsner, Volker Metag, H. van Pee, R. Gregor, R. Varma, T. Mertens, Friedrich Klein, Herbert Löhner, R. W. Novotny, Yu. A. Beloglazov, B. Krusche, A. Roy, A. V. Sarantsev, Ph. Hoffmeister, O. Bartholomy, L. M. Pant, H. Dutz, S. Kammer, Bernard Metsch, Frank Frommberger, D. Piontek, Ch. Wendel, Ch. Funke, I. V. Lopatin, V. V. Sumachev, H. Schmieden, V. Crede, D. E. Bayadilov, A. B. Gridnev, Mariana Nanova, A. Süle, I. Jaegle, M. Ostrick, D. Trnka, J. C. S. Bacelar, R. Ewald, T. Szczepanek, M. Fuchs
Publikováno v:
Physical Review Letters. 114
The N pi(0)pi(0) decays of positive-parity N* and Delta* resonances at about 2 GeV are studied at ELSA by photoproduction of two neutral pions off protons. The data reveal clear evidence for several intermediate resonances: Delta(1232), N(1520)3/2(-)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63b1d2e570c126e5710f7991b5971f6b
https://doi.org/10.1103/physrevlett.114.091803
https://doi.org/10.1103/physrevlett.114.091803
Publikováno v:
The European Physical Journal A. 28:213-225
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::720297b78c4212e21300dda9a833f1c5
https://doi.org/10.1140/epja/i2006-10053-5
https://doi.org/10.1140/epja/i2006-10053-5
Publikováno v:
EUROPEAN PHYSICAL JOURNAL A
We present results for the helicity amplitudes of the lowest-lying hyperon resonances Y*, computed within the framework of the Bonn constituent-quark model, which is based on the Bethe-Salpeter approach. The seven parameters entering the model were f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98838438b647472db09d8299c6b7f498
https://doi.org/10.1140/epja/i2005-10190-3
https://doi.org/10.1140/epja/i2005-10190-3
Publikováno v:
The European Physical Journal A. 13:477-491
In this paper we investigate weak decays of heavy mesons in the framework of a covariant quark model, which is based on the Bethe-Salpeter equation in instantaneous approximation. Apart from a phenomenological confinement potential, a residual intera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::563885a5deee21ab7f355101b72de6d5
https://doi.org/10.1007/s10050-002-8778-1
https://doi.org/10.1007/s10050-002-8778-1
Publikováno v:
The European Physical Journal A. 10:309-346
This is the first of a series of three papers treating light baryon resonances (up to 3 GeV) within a relativistically covariant quark model based on the three-fermion Bethe-Salpeter equation with instantaneous two- and three-body forces. In this pap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b6b8b600c67329bc7de11aba6ddd429
https://doi.org/10.1007/s100500170117
https://doi.org/10.1007/s100500170117
Publikováno v:
Czechoslovak Journal of Physics. 51:B152-B159
In this contribution, the results on the spectra and semileptonic decays of light and heavy mesons in a relativistic constituent quark model incorporating a confinement potential as well as a residual interaction induced by instantons are reported.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e60f078f8ba3ea31963a9d610e867f0
https://doi.org/10.1007/s10582-001-0053-1
https://doi.org/10.1007/s10582-001-0053-1
Publikováno v:
The European Physical Journal A. 9:73-94
We present new results of a relativistic quark model based on the Bethe-Salpeter equation in its instantaneous approximation. Assuming a linearly rising confinement potential with an appropriate spinorial structure in Dirac space and adopting a resid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8621a0642f0fc1cf8e742d43c52735bd
https://doi.org/10.1007/pl00013675
https://doi.org/10.1007/pl00013675
Autor:
Bernard Metsch
Publikováno v:
Nuclear Physics A. 675:161-166
In this talk we will briefly review the role of instantons for the mass spectra and decay properties of light-flavour hadrons.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2be2fd6502d8653e809908c5a9c32a58
https://doi.org/10.1016/s0375-9474(00)00239-6
https://doi.org/10.1016/s0375-9474(00)00239-6
Publikováno v:
EUROPEAN PHYSICAL JOURNAL A
We present some of our results for the electromagnetic properties of excited Σ hyperons, computed within the framework of the Bonn constituent-quark model, which is based on the Bethe-Salpeter approach. The seven parameters entering the model are fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f9ae89a49ee86ff5d3bd94e56436bd2
https://doi.org/10.1140/epja/i2006-10265-7
https://doi.org/10.1140/epja/i2006-10265-7