Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-09-20
Physics
High Energy Physics
High Energy Physics - Phenomenology
Scientific paper
We show that the scalar leptoquark Yukawa couplings generate a significant lepton flavour violation. We compute the light scalar leptoquark contributions to the branching ratios (Br) of the lepton flavour violating (LFV) decays $\ell \to \ell_i \ell_j \bar{\ell}_j$ and $\ell \rightarrow \ell^{\prime} \gamma$ with (i,j = e,$\mu$). We discuss the role of the relevant input parameters to these decay rates which are the Yukawa couplings ($h_{a\ell}$) with ($a=u,c,t$), the light scalar mass $M_{S_{1}}$ and the mixing angle $\sin2\theta_{LQ}$. We investigate the experimental limits from $(g-2)_\mu$, $\mu-e$ conversion and $\pi \to e \nu_e, \mu \nu_\mu$ to get constraint on the input parameter space. We predict that the upper limits on the branching ratios of $\tau \to \ell_i \ell_j \bar{\ell}_j $ can reach the experimental current limits. We also show that it is possible to accommodate both $\tau \to \ell_i \ell_j \bar{\ell}_j$ and $\tau \to \ell\gamma$ branching ratios for certain choices of LQ parameters.
Benbrik Rachid
Chabab Mohamed
Faisel Gaber
No associations
LandOfFree
Lepton Flavour Violating tau and mu decays induced by scalar leptoquark does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Lepton Flavour Violating tau and mu decays induced by scalar leptoquark, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lepton Flavour Violating tau and mu decays induced by scalar leptoquark will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-265518