m(T2): The Truth behind the glamour

By Alan J. Barr, Christopher Gorham Lester, P. Stephens. 2003

517 citations recorded by the source corpus.

We present the kinematic variable,mT2, which is in some ways similar to the more familiar 'transverse mass', but which can be used in events where two or more particles have escaped detection. We define this variable and describe the event topologies to which it applies, then present some of its mathematical properties. We then briefly discuss two case studies which show how mT2 is vital when reconstructing the masses of supersymmetric particles in mSUGRA-like and AMSB-like scenarios at the large hadron collider.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/96dd0bf9856f4f5f040f60e1164501be25c32b02

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In Nuclear and High Energy Physics

Citations in the corpus

Searches for electroweak production of supersymmetric particles with compressed mass spectra in √s = 13 TeV pp collisions with the ATLAS detector (2019, methodology): “This scenario exploits the relationship between the lepton momenta and the missing transverse momentum through the stransverse mass, mT2 [28, 29], which exhibits a kinematic endpoint similar to that for m`` in electroweakino decays.”
Anatomy of the inert two-Higgs-doublet model in the light of the LHC and non-LHC dark matter searches (2016, methodology): “In order to calculate the limits from the LHC at 8 TeV, we used the CheckMATE [90, 91, 92, 93, 94, 95, 96, 97, 98] framework, which allows easy application of implemented search analyses.”
Using subsystem MT2 for complete mass determinations in decay chains with missing energy at hadron colliders (2008, methodology): “1) We shall now give a formal definition of the quantity M (n,p,c) T2 , generalizing the original idea of MT2 [13, 17].”
Search for electroweak production of supersymmetric particles in final states with two or three leptons at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\odd (2018, methodology): “• 2`+0jets channel: targets χ̃ 1 χ̃ − 1 and ̃̀ ̃̀ production (shown in Figures 1(a) and 1(e)) in signal regions with a jet veto and defined using the “stransverse mass” variable, mT2 [89, 90], and the dilepton invariant mass m``; • 2`+jets channel: targets χ̃± 1 χ̃ 0 2 production with decays via g”
Beyond the Standard Model Physics at the HL-LHC and HE-LHC (2018, methodology): “Finally the stransverse mass MT2 [130, 131] is used to discriminate the signal from the background.”
Search for direct production of charginos, neutralinos and sleptons in final states with two leptons and missing transverse momentum in pp collisions at √s = 8 TeV with the ATLAS detector (2014, background): “Five of the SRs exploit the ‘stransverse’ mass mT2 [94, 95], defined as”
Weighing wimps with kinks at colliders: invisible particle mass measurements from endpoints (2007, methodology): “A suitable observable was put forward in [8, 9], and is defined as follows.”
Search for electroweak production of charginos and neutralinos in multilepton final states in proton-proton collisions at s=13$$ \sqrt{s}=13 $$ TeV (2017, background): “The MT2 variable is computed with the light lepton and the leading τh.”
Deep Learning, Dark Knowledge, and Dark Matter (2014, background): “There has been a vigorous eﬀort in the literature to build high-level features which can aid in this classiﬁcation task (Cheng and Han, 2008; Barr et al., 2003; Rogan, 2010; Buckley et al., 2013), including the ten used for this benchmark: • Axial E T : missing transverse energy along the vector…”