A short comparison between m_T2 and m_CT
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
We compare m_T2 with m_CT; both are kinematic variables designed to find relationships between masses of pair-produced new states with symmetric decay chains. We find that for massless visible particles m_CT equals m_T2 in a particular limit. We identify advantages and disadvantages to the use of each variable. Tovey's paper on m_CT also introduced a powerful concept of extracting mass information from an analysis at intermediate stages of a symmetric decay chain. We suggest that m_T2 is a better tool for performing this analysis than m_CT due to m_T2's better properties under initial state radiation.
Cite
@article{arxiv.0804.3344,
title = {A short comparison between m_T2 and m_CT},
author = {Mario Serna},
journal= {arXiv preprint arXiv:0804.3344},
year = {2008}
}
Comments
6 pages 2 figures, JHEP Style, minor clarifications and corrected typos