arXiv subjects

C. C. Barros Jr

Publications and source records attributed to C. C. Barros Jr.

23 records · Page 2Linked to original sources

arXiv2005

Quantum mechanics in curved space-time II

This paper is a sequence of the work presented in [1], where, the principles of the general relativity have been used to formulate quantum wave equations taking into account the effect of the electromagnetic and strong interactions in the space-time metric of quantum systems. Now, the role of the energy-momentum tensor in this theory is studied, and it is consistent with the formulation of the general quantum mechanics shown in [1]. With this procedure, a dynamical cut-off is generated and the constant $A$ of the field equation is calculated.

physics.gen-ph↗

arXiv2005

Quantum mechanics in curved space-time

In this paper, the principles of the general relativity are used to formulate quantum wave equations for spin-0 and spin-1/2 particles. More specifically, the equations are worked in a Schwarzschild-like metric. As a test, the hydrogen atom spectrum is calculated. A comparison of the calculated spectrum with the numerical data of the deuterium energy levels shows a significant improvement of the accord, and the deviations are almost five times smaller then the ones obtained with the Dirac theory. The implications of the theory considering the strong interactions are also discussed.

physics.gen-ph↗

arXiv2004

$πΛ$ phase shifts and CP Violation in ${Ξ\to πΛ}$ Deca

The CP violation asymmetry parameters in $Ξ\toπΛ$ nonleptonic decays are presently being measured by the HyperCP experiment. In the study of these CP violation parameters, the strong $S$ and $P$ phase shifts for the $πΛ$ final-state interactions are needed. In this work, these phases are calculated using an effective chiral Lagrangian model, that considers $Σ$, $Σ^*$(1385), and the $σ$-term, in the intermediate states. The $σ$-term is calculated in terms of the scalar form factor of the baryon.

hep-ph↗

arXiv2003

$πΞ$ phase shifts and CP Violation in ${Ω\toπΞ}$ Decay

In the study of CP violation signals in $Ø\toπΞ$ nonleptonic decays, the strong $J$=3/2 $P$ and $D$ phase shifts for the $πΞ$ final-state interactions are needed. These phases are calculated using an effective Lagrangian model, including $Ξ$, $Ξ^*$(1530), $ρ$ and the $σ$-term, in the intermediate states. The $σ$-term is calculated in terms of the scalar form factor of the baryon.

hep-ph↗

arXiv2002

Hyperon scalar form factors

We evaluate the long range part of the hyperon form factors and their contribution to elastic pion-hyperon scattering.

hep-ph↗