Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-06-02
Phys.Rev. D61 (2000) 015007
Physics
High Energy Physics
High Energy Physics - Phenomenology
42 pages, Latex, 2 ps figures
Scientific paper
10.1103/PhysRevD.61.015007
We investigate, in detail, a model in which the third family fermions are subjected to an SU(2) dynamics different from the first two families. Constrained by the precision Z-pole data, the heavy gauge boson mass is bounded from below to be about 1.7 TeV at the $2\sigma$ level. The flavor-changing neutral current (FCNC) in the lepton sector can be significant in $\tau\leftrightarrow e$ and $\tau \leftrightarrow \mu$ transitions. In the latter case, the ratio $Br(\tau\to \mu \bar{\nu_\mu} \nu_\tau)/ Br(\tau\to e \bar{\nu_e} \nu_\tau)$ and $Br(\tau\to \mu \mu \mu)$ can constrain the model better than LEP/SLC data in some region of the parameter space. Furthermore, FCNCs are unavoidable in the quark sector. Significant effects to the $B^0-\bar{B^0}$ mixing and the rare decays of the K and B mesons, such as $K^\pm \to \pi^\pm \nu {\bar \nu}$, $b \to s \nu {\bar \nu}, B_s \to \tau^+\tau^-, \mu^+\mu^-$ and $B_{s,d} \to \mu^\pm \tau^\mp$, are expected.
Malkawi Ehab
Yuan C.--P.
No associations
LandOfFree
New Physics in the Third Family and its Effect on Low Energy Data 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 New Physics in the Third Family and its Effect on Low Energy Data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New Physics in the Third Family and its Effect on Low Energy Data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-561130