Abstract
Search for metastable heavy charged particles with large ionization energy loss in pp collisions at $\sqrt{s}$=13 TeV with the ATLAS detector
Highlights
Heavy long-lived particles (LLPs) are predicted by several extensions of the Standard Model
Some Supersymmetry models [1] predict the existence of meta-stable sleptons, in particular in Gauge-Mediated SUSY Breaking (GMSB) with the τ slepton (τ) as a LLP, and of colored metastable squarks (q) and gluinos (g) in split SUSY
Heavy LLPs should be produced at the Large Hadron Collider (LHC) as massive particles
Summary
Heavy long-lived particles (LLPs) are predicted by several extensions of the Standard Model. Heavy LLPs should be produced at the LHC as massive particles They are expected to move slowly (β < 1), thereby having a measurable time-of-flight, and to release an anomalous amount of energy while passing through the detector. These proceedin√gs present a search for massive charged long-lived particles produced in protonproton collisions at s = 13 TeV at the LHC using the ATLAS experiment [2]. The search strategy focuses on decays occurring within the active detector volume, which covers lifetimes from around 1 ns to several tens of ns. Such R-hadrons with lifetimes consistent with decaying inside the ATLAS detector are referred to as metastable. The approach described in these proceedings allows direct observation of charged R-hadrons which are either stable or metastable and traverse at least seven silicon layers of the ATLAS inner tracking system
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