Spatial Mass
High Energy Physics - Phenomenology
2014-07-09 v1
Abstract
In analogy to the transverse mass constructed from two objects, we define the spatial mass constructed from the input objects 3-vector momenta. This observable is insensitive to jet mass scale and resolution uncertainties when constructed from small-radius hadronic jets. Thus it improves the effective resolution on multijet masses for searches and measurements in hadronic final states. To illustrate the efficacy of the spatial mass, we consider a top quark mass measurement at the Large Hadron Collider (LHC) in the 3-jet final state. The reduction in uncertainty comes with a negligible cost in sensitivity.
Keywords
Cite
@article{arxiv.1407.2204,
title = {Spatial Mass},
author = {Benjamin Nachman and Ariel Schwartzman},
journal= {arXiv preprint arXiv:1407.2204},
year = {2014}
}