HepData and JetWeb: HEP data archiving and model validation

TL;DR

This paper describes the integration of HepData and JetWeb systems to improve data archiving and model validation in high-energy physics, enabling efficient model tuning against experimental data using a unified database and XML data formats.

Contribution

It introduces a combined system that unifies data storage and model validation processes with new XML data formats for high-energy physics applications.

Findings

Development of a unified database for model tuning

Implementation of caching for simulation results

Introduction of HepML XML data format

Abstract

The CEDAR collaboration is extending and combining the JetWeb and HepData systems to provide a single service for tuning and validating models of high-energy physics processes. The centrepiece of this activity is the fitting by JetWeb of observables computed from Monte Carlo event generator events against their experimentally determined distributions, as stored in HepData. Caching the results of the JetWeb simulation and comparison stages provides a single cumulative database of event generator tunings, fitted against a wide range of experimental quantities. An important feature of this integration is a family of XML data formats, called HepML.