Zobrazeno 1 - 10
of 345
pro vyhledávání: '"Noguera, S"'
We study the role of the Schwinger phase (SP) that appears in the propagator of a charged particle in the presence of a static and uniform magnetic field $\vec{B}$. We first note that this phase cannot be removed by a gauge transformation; far from t
Externí odkaz:
http://arxiv.org/abs/2306.04128
The mass spectrum of $\pi^+$ and $\rho^+$ mesons in the presence of a static uniform magnetic field $\vec B$ is studied within a two-flavor NJL-like model. We improve previous calculations taking into account the effect of Schwinger phases carried by
Externí odkaz:
http://arxiv.org/abs/2209.10679
Mixing effects on the mass spectrum of light neutral pseudoscalar and vector mesons in the presence of an external uniform magnetic field $\vec B$ are studied in the framework of a two-flavor NJL-like model. The model includes isoscalar and isovector
Externí odkaz:
http://arxiv.org/abs/2205.15928
Publikováno v:
Phys. Rev. D 101, 034003 (2020)
We consider the decay $\pi^- \to l \, \bar{\nu}_l$ ($l=e^-,\,\mu^-$) in the presence of an arbitrary large uniform magnetic field, using the symmetric gauge. The consequences of the axial symmetry of the problem and the issue of angular momentum cons
Externí odkaz:
http://arxiv.org/abs/1910.10814
Publikováno v:
J. High Energ. Phys. 2020, 58 (2020)
We study the effect of a uniform magnetic field $\vec B$ on the decays $\pi^-\to l^-\,\bar{\nu}_l$, where $l^-\,=e^-,\,\mu^-$, carrying out a general analysis that includes four $\pi^-$ decay constants. Taking the values of these constants from a chi
Externí odkaz:
http://arxiv.org/abs/1908.10765
Publikováno v:
Phys. Rev. D 100, 054014 (2019)
In the framework of the Nambu--Jona-Lasino (NJL) model, we study the effect of an intense external uniform magnetic field on neutral and charged pion masses and decay form factors. In particular, the treatment of charged pions is carried out on the b
Externí odkaz:
http://arxiv.org/abs/1907.05840
Publikováno v:
Phys. Rev. D 99, 054031 (2019)
We propose a model-independent parametrization for the one-pion-to-vacuum matrix elements of the vector and axial vector hadronic currents in the presence of an external uniform magnetic field. It is shown that, in general, these hadronic matrix elem
Externí odkaz:
http://arxiv.org/abs/1810.08110
We study the behavior of strongly interacting matter under a strong external magnetic field in the context of chiral quark models that include nonlocal interactions. In particular, we analyze the influence of a constant magnetic field on the chiral q
Externí odkaz:
http://arxiv.org/abs/1805.04597
Publikováno v:
Phys. Rev. D 96, 114012 (2017)
We study the behavior of strongly interacting matter under a uniform intense external magnetic field in the context of nonlocal extensions of the Polyakov-Nambu-Jona-Lasinio model. A detailed description of the formalism is presented, considering the
Externí odkaz:
http://arxiv.org/abs/1709.04742
Publikováno v:
Phys. Rev. D 95, 054006 (2017)
We study the $\eta$ and $\eta'$ distribution amplitudes (DAs) in the context of a nonlocal SU(3)_L x SU(3)_R chiral quark model. The corresponding Lagrangian allows to reproduce the phenomenological values of pseudoscalar meson masses and decay const
Externí odkaz:
http://arxiv.org/abs/1611.08457