Accurate Mass Determinations in Decay Chains with Missing Energy: II
Abstract
We discuss kinematic methods for determining the masses of the particles in events at a hadron collider in which a pair of identical particles is produced with each decaying via a series of on-shell intermediate beyond-the-SM (BSM) particles to visible SM particles and an invisible particle (schematically, pp -> ZZ + jets with Z -> Aa -> Bba -> Ccba -> ... -> cba... + N where a,b,c,... are visible SM particles or groups of SM particles, A,B,C,... are on-shell BSM particles and N is invisible). This topology arises in many models including SUSY processes such as squark and gluino pair production and decay. We present the detailed procedure for the case of Z -> 3 visible particles + N and demonstrate that the masses obtained from the kinematic procedure are independent of the model by comparing SUSY to UED.
Cite
@article{arxiv.0905.1344,
title = {Accurate Mass Determinations in Decay Chains with Missing Energy: II},
author = {Hsin-Chia Cheng and John F. Gunion and Zhenyu Han and Bob McElrath},
journal= {arXiv preprint arXiv:0905.1344},
year = {2010}
}
Comments
v2, published version in PRD