Testing ATLAS Z+MET Excess with LHC Run 2
Abstract
The ATLAS collaboration reported a 3sigma excess in the search of events containing on-Z dilepton, jets, and large missing momentum (MET) in the 8 TeV LHC run. Motivated by this excess, many models of new physics have been proposed. Recently, the ATLAS and CMS collaborations reported new results for similar Z+MET channels in the 13 TeV run. In this paper, we comprehensively discuss the consistency between the proposed models and the LHC results of Run 1 and Run 2. We find that in models with heavy gluino production, there is generically some tension between the 8 TeV and 13 TeV results. On the other hand, models with light squark production provide relatively better fitting to both results.
Keywords
Cite
@article{arxiv.1601.05777,
title = {Testing ATLAS Z+MET Excess with LHC Run 2},
author = {Xiaochuan Lu and Satoshi Shirai and Takahiro Terada},
journal= {arXiv preprint arXiv:1601.05777},
year = {2016}
}
Comments
18 pages, 2 tables, 8 figures. Version accepted for publication in JHEP