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arXiv · 1006.4240

Fermion Resonances on a Thick Brane with a Piecewise Warp Factor

Hai-Tao Li·Yu-Xiao Liu·Zhen-Hua Zhao·Heng Guo
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Abstract

In this paper, we mainly investigate the problems of resonances of massive KK fermions on a single scalar constructed thick brane with a piecewise warp factor matching smoothly. The distance between two boundaries and the other parameters are determined by one free parameter through three junction conditions. For the generalized Yukawa coupling $\eta\bar{\Psi}\phi^{k}\Psi$ with odd $k=1,3,5,...$, the mass eigenvalue $m$, width $\Gamma$, lifetime $\tau$, and maximal probability $P_{max}$ of fermion resonances are obtained. Our numerical calculations show that the brane without internal structure also favors the appearance of resonant states for both left- and right-handed fermions. The scalar-fermion coupling and the thickness of the brane influence the resonant behaviors of the massive KK fermions.

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Hai-Tao Li, Yu-Xiao Liu, Zhen-Hua Zhao, Heng Guo. 2010-06-22. Fermion Resonances on a Thick Brane with a Piecewise Warp Factor. https://doi.org/10.1103/physrevd.83.045006

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