# xSLHA: an Les Houches Accord reader for Python and Mathematica

## TL;DR

xSLHA is a software package that efficiently reads and processes SLHA format files in Python and Mathematica, supporting standard and non-standard data blocks for high energy physics models.

## Contribution

It introduces a fast, versatile parser for SLHA files in Python and Mathematica, accommodating deviations and large datasets for broader physics applications.

## Key findings

- Supports large data samples efficiently
- Handles non-standard blocks used by tools like HiggsBounds
- Provides high-level language integration for SLHA data

## Abstract

The format defined by the SUSY Les Houches Accord (SLHA) is widely used in high energy physics to store and exchange information. It is no longer applied only to a few supersymmetric models, but the general structure is adapted to all kind of models. Therefore, it is helpful to have parsers at hand which can import files in the SLHA format into high-level languages as Python and Mathematica in order to further process the data. The focus of the xSLHA package, which exists now for Python and Mathematica, was on a fast read-in of large data samples. Moreover, also some blocks used by different tools, as HiggsBounds for instance, deviate from the standard conventions. These are also supported by xSLHA.