Zobrazeno 1 - 10
of 491
pro vyhledávání: '"Gutsche Thomas"'
Publikováno v:
EPJ Web of Conferences, Vol 212, p 07005 (2019)
We complete our derivation of upper limits on the CP violating ηππ and η‘ππ couplings from an analysis of their two-loop contribution to the neutron electric dipole moment (nEDM). As a result we obtain numerical upper limits for the ηππ an
Externí odkaz:
https://doaj.org/article/2e5d71fb3fdb490780ff61a4e0173da8
Autor:
Surovtsev, Yury S., Bydžovský, Petr, Gutsche, Thomas, Kamiński, Robert, Lyubovitskij, Valery E., Nagy, Miroslav
Publikováno v:
Particles 5, 210 (2022)
We study the process $\gamma\gamma\to\pi^0\pi^0$ involving the principle mechanisms, the structure of its cross section and the role of individual isoscalar-tensor resonances in the saturation of its energy spectrum.
Comment: 16 pages, 6 figures
Comment: 16 pages, 6 figures
Externí odkaz:
http://arxiv.org/abs/2112.15435
Publikováno v:
Phys. Rev. D 104, 094048 (2021)
We have studied the dominant radiative transitions of the charmonium $S$-and $P$-wave states within the covariant confined quark model. The gauge invariant leading-order transition amplitudes have been expressed by using either the conventional Loren
Externí odkaz:
http://arxiv.org/abs/2107.08774
Publikováno v:
Phys. Rev. D 101, 114032 (2020)
Recent lattice QCD calculations showed that a $d_{N\Omega}$ dibaryon state similar to the deuteron with small binding energy may exist. In this work we propose a hadronic molecular approach to study the dynamical properties of this exotic state. We u
Externí odkaz:
http://arxiv.org/abs/2004.12415
Publikováno v:
J. Phys. G 48, 025001 (2020)
Strong two- and three-body decays of the new excited hyperon $\Omega^*(2012)$ are discussed in the hadronic molecular approach. The $\Omega^*(2012)$ state is considered to contain the mixed $\Xi \bar K$ and $\Omega \eta$ hadronic components. In our c
Externí odkaz:
http://arxiv.org/abs/1912.10894
Autor:
Gutsche, Thomas, Ivanov, Mikhail A., Körner, Jürgen G., Lyubovitskij, Valery E., Tyulemissov, Zhomart
Publikováno v:
Phys. Rev. D 100, 114037 (2019)
We calculate the semileptonic and a subclass of sixteen nonleptonic two-body decays of the double charm baryon ground states $\Xi_{cc}^{++},\,\Xi_{cc}^{+}$ and $\Omega_{cc}^+$ where we concentrate on the nonleptonic decay modes. We identify those non
Externí odkaz:
http://arxiv.org/abs/1911.10785
Publikováno v:
Phys. Rev. D 101, 034026 (2020)
We present a study of the $N^*(1535)$ resonance electroexcitation in a soft-wall AdS/QCD model. Both the transverse $A_{1/2}^p$ and longitudinal $S_{1/2}^p$ helicity amplitudes are calculated resulting in good agreement with data and with the MAID pa
Externí odkaz:
http://arxiv.org/abs/1911.00076
Publikováno v:
Phys. Rev. D 100, 094031 (2019)
We study the hadronic molecular structure of hidden heavy pentaquarks - new exotic states composed of charmed/bottom baryons and $D(D^*)/B(B^*)$ mesons. Based on the observation of three pentaquark candidates $P_c^+(4312)$, $P_c^+(4440)$, and $P_c^+(
Externí odkaz:
http://arxiv.org/abs/1910.03984
Autor:
Obukhovsky, Igor T., Faessler, Amand, Fedorov, Dimitry K., Gutsche, Thomas, Lyubovitskij, Valery E.
Publikováno v:
Phys. Rev. D 100, 094013 (2019)
A workable basis of quark configurations $s^3$, $s^2p$ and $sp^2$ at light front has been constructed to describe the high-$Q^2$ behavior of transition form factors and helicity amplitudes in the electroproduction of the lightest nucleon resonances,
Externí odkaz:
http://arxiv.org/abs/1909.13787
Publikováno v:
Nucl. Phys. B952 (2020) 114934
We present a study of the nucleon electromagnetic form factors and of the Roper-nucleon transition at finite small temperature $T$, using an extended version of a soft-wall AdS/QCD approach developed by us previously. In the action we introduce the e
Externí odkaz:
http://arxiv.org/abs/1906.08641