Logo image
返回
Search for new particles in final states with a boosted top quark and missing transverse momentum in proton-proton collisions at $ \sqrt{s} $ = 13 TeV with the ATLAS detector
資料集

Search for new particles in final states with a boosted top quark and missing transverse momentum in proton-proton collisions at $ \sqrt{s} $ = 13 TeV with the ATLAS detector

Georges Aad, Braden Keim Abbott, Kira Abeling, Nils Julius Abicht, Haider Abidi, Asmaa Aboulhorma, Halina Abramowicz, Henso Abreu, Yiming Abulaiti, Bobby Samir Acharya, …
Deutsches Elektronen-Synchrotron, DESY, Hamburg
2024
DOI: https://doi.org/10.3204/pubdb-2024-05533

摘要

CERN LHC Coll channel cross section: upper limit dark matter: associated production experimental results final state: ((n)jet) GeV-cms Hadron-Hadron Scattering mass: lower limit mass: scalar mediation p p: colliding beams p p: scattering quark: branching ratio quark: mass quark: single production quark: vector particle top: hadronic decay top: single production topology transverse momentum: missing-energy
A search for events with one top quark and missing transverse momentum in the final state is presented. The fully hadronic decay of the top quark is explored by selecting events with a reconstructed boosted top-quark topology produced in association with large missing transverse momentum. The analysis uses 139 fb$^{−1}$ of proton-proton collision data at a centre-of-mass energy of $ \sqrt{s} $ = 13 TeV recorded during 2015-2018 by the ATLAS detector at the Large Hadron Collider. The results are interpreted in the context of simplified models for Dark Matter particle production and the single production of a vector-like T quark. Without significant excess relative to the Standard Model expectations, 95% confidence-level upper limits on the corresponding cross-sections are obtained. The production of Dark Matter particles in association with a single top quark is excluded for masses of a scalar (vector) mediator up to 4.3 (2.3) TeV, assuming m$_{χ}$ = 1 GeV and the model couplings λ$_{q}$ = 0.6 and λ$_{χ}$ = 0.4 (a = 0.5 and g$_{χ}$ = 1). The production of a single vector-like T quark is excluded for masses below 1.8 TeV assuming a coupling to the top quark κ$_{T}$ = 0.5 and a branching ratio for T → Zt of 25%.[graphic not available: see fulltext]

相關連結

指標

1 檢視次數

詳細資料

Logo image