2009/04/30 by Jonathan L. Feng, Iftah Galon, David Sanford +3
Physics and Astronomy · #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.79.116009
published as Phys.Rev.D79:116009,2009 · 25 pages, 5 figures; v2: published version
openalex publication_date 2009/06/22 · arxiv created 2009/06/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We determine the widths of three-body decays of sleptons, \stackrel\texttildelow\ensuremathℓ^\ensuremath-\ensuremath→\stackrel\texttildelow\ensuremathℓ^\ifmmode±\else\textpm\fi\ensuremathℓ^\ensuremath-\ensuremathℓ^\ensuremath∓, \stackrel\texttildelow\ensuremathℓ^\ensuremath-\ensuremathν\ensuremathν, \stackrel\texttildelow\ensuremathℓ^\ensuremath-qq, 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.