SPICE: Simulation Package for Including Flavor in Collider Events

TL;DR

SPICE is a comprehensive, user-friendly simulation tool that models flavor violation in supersymmetric collider events, integrating high-scale flavor parameters to predict low-energy spectra and event outputs.

Contribution

It introduces a flexible, publicly available software that combines flavor-violating parameters with supersymmetric models to simulate collider events, aiding flavor studies at colliders.

Findings

Generates low-energy spectra and branching ratios with flavor violation

Outputs compatible HERWIG and SUSY LesHouches files

Supports various supersymmetric models and flavor-violation specifications

Abstract

We describe SPICE: Simulation Package for Including Flavor in Collider Events. SPICE takes as input two ingredients: a standard flavor-conserving supersymmetric spectrum and a set of flavor-violating slepton mass parameters, both of which are specified at some high "mediation" scale. SPICE then combines these two ingredients to form a flavor-violating model, determines the resulting low-energy spectrum and branching ratios, and outputs HERWIG and SUSY LesHouches files, which may be used to generate collider events. The flavor-conserving model may be any of the standard supersymmetric models, including minimal supergravity, minimal gauge-mediated supersymmetry breaking, and anomaly-mediated supersymmetry breaking supplemented by a universal scalar mass. The flavor-violating contributions may be specified in a number of ways, from specifying charges of fields under horizontal symmetries to completely specifying all flavor-violating parameters. SPICE is fully documented and publicly available, and is intended to be a user-friendly aid in the study of flavor at the Large Hadron Collider and other future colliders.