Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-04-09
Phys.Rev.D79:116009,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
25 pages, 5 figures; v2: published version
Scientific paper
10.1103/PhysRevD.79.116009
We determine the widths of three-body decays of sleptons, $\tilde{l}^- \to \tilde{l}^{\pm} l^- l^{\mp}, \tilde{l}^- \nu \bar{\nu}, \tilde{l}^- q \bar{q}$, in the presence of arbitrary slepton flavor violation and left-right mixing. These decays are important in scenarios in which the lightest supersymmetric particle is the gravitino, a generic possibility in models with gauge- and gravity-mediated supersymmetry breaking. Three-body decays have been discussed previously assuming flavor conservation and left-right mixing in only the stau sector. Flavor violation and general left-right mixing open up many new decay channels, which provide new avenues for precision mass measurements and may play an essential role in solving the standard model flavor problem. We present results for toy models with two-generation mixing, and discuss the implementation of these results in SPICE, a program that simplifies collider event simulations of flavor-violating supersymmetric models.
Feng Jonathan L.
Galon Iftah
Sanford David
Shadmi Yael
Yu Felix
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