Zobrazeno 1 - 10
of 38
pro vyhledávání: '"M., J. L. Lucio"'
Publikováno v:
Phys.Rev.D78:114016,2008
We consider B to PS decays where P stands for pseudoscalar and S for a heavy (~1500 MeV) scalar meson. We achieve agreement with available experimental data -- which includes a two orders of magnitude hierarchy -- assuming the scalars mesons are two
Externí odkaz:
http://arxiv.org/abs/0808.2305
Autor:
M., J. L. Lucio
We point out limitations to the analogy between the continuous variable and spin 1/2 systems and show that the maximal violation of Bell inequality is related to an infinite degeneracy. We quantify non-maximal violation of the Bell-CHSH inequality an
Externí odkaz:
http://arxiv.org/abs/quant-ph/0610104
Autor:
Vaquera-Araujo, C. A., M, J. L. Lucio
We formulate non-relativistic classical and quantum mechanics in the non-commutative two dimensional plane. The approach we use is based on the Galilei group, where the non-commutativity is seen as a central extension upon identification of the boost
Externí odkaz:
http://arxiv.org/abs/math-ph/0512064
Publikováno v:
Eur.Phys.J.C45:693-700,2006
We analyze the decays $B^0 \to a^\pm_0 \pi^\mp$ and $B^{-,0} \to f_0 K^{-,0}$ and show that within the factorization approximation a phenomenological consistent picture can be obtained. We show that in this approach the $O_6$ operator provides the do
Externí odkaz:
http://arxiv.org/abs/hep-ph/0501022
Autor:
Vaquera-Araujo, C. A., M, J. L. Lucio
We show that Feynman's proof applies to Newtonian gravitation, implying thus the existence of gravitational analogous of the electric and magnetic fields and the corresponding Lorentz-like force. Consistency of the formalism require particular proper
Externí odkaz:
http://arxiv.org/abs/physics/0410198
Publikováno v:
Phys.Rev.D69:074033,2004
We consider the phenomenological description of the two pion invariant mass spectrum in the $V' \to V \pi\pi$ decays. We study the parametrization of the amplitude involving both $S$ and $D$ wave contributions. From a fit to the two pion decays of th
Externí odkaz:
http://arxiv.org/abs/hep-ph/0311133
Publikováno v:
Eur.Phys.J.C26:253-260,2002
The complementarity between Chiral Perturbation Theory and the Linear Sigma Model is exploited to study $\pi^0\pi^0$ production in $\phi$ radiative decays, where the effects of the $f_0(980)$ scalar resonance, and those of its more controversial $\si
Externí odkaz:
http://arxiv.org/abs/hep-ph/0204339
Publikováno v:
Eur.Phys.J.C28:107-114,2003
Using the pole approach we determine the mass and width of the $f_0(980)$; in particular, we analyze the possibility that two nearby poles are associated to it. We restrict our analysis to a neighborhood of the resonance, using $\pi\pi$ data for the
Externí odkaz:
http://arxiv.org/abs/hep-ph/0204338
Publikováno v:
Phys.Lett.B517:345-354,2001
The complementarity between Chiral Perturbation Theory and the Linear Sigma Model in the scalar channel is exploited to study $\pi^0\pi^0$ production in $\rho$ and $\omega$ radiative decays, where the effects of a low mass scalar resonance $\sigma(50
Externí odkaz:
http://arxiv.org/abs/hep-ph/0105179
Autor:
M., J. L. Lucio, Pestieau, J.
Publikováno v:
Mod.Phys.Lett. A16 (2001) 1315-1320
We consider the problem of propagation of an unstable particle in the framework of Quantum Field Theory. Using unitarity, we show that a real renormalization constant free of threshold singularities naturally arises.
Comment: 5 pages, no figures
Comment: 5 pages, no figures
Externí odkaz:
http://arxiv.org/abs/hep-ph/0012207