Search for Squarks and Gluinos in Final States with Jets and Missing Transverse Momentum Using 36 Fb[minus]1 of [square Root]s

Search for Squarks and Gluinos in Final States with Jets and Missing Transverse Momentum Using 36 Fb[minus]1 of [square Root]s
Author: ATLAS Collaboration CERN
Publisher:
Total Pages: 0
Release: 2018
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Abstract: A search for the supersymmetric partners of quarks and gluons (squarks and gluinos) in final states containing hadronic jets and missing transverse momentum, but no electrons or muons, is presented. The data used in this search were recorded in 2015 and 2016 by the ATLAS experiment in √s=13 TeV proton-proton collisions at the Large Hadron Collider, corresponding to an integrated luminosity of 36.1 fb−1. The results are interpreted in the context of various models where squarks and gluinos are pair produced and the neutralino is the lightest supersymmetric particle. An exclusion limit at the 95% confidence level on the mass of the gluino is set at 2.03 TeV for a simplified model incorporating only a gluino and the lightest neutralino, assuming the lightest neutralino is massless. For a simplified model involving the strong production of mass-degenerate first- and second-generation squarks, squark masses below 1.55 TeV are excluded if the lightest neutralino is massless. These limits substantially extend the region of supersymmetric parameter space previously excluded by searches with the ATLAS detector

Search for Squarks and Gluinos in Final States with Jets and Missing Transverse Momentum at S√

Search for Squarks and Gluinos in Final States with Jets and Missing Transverse Momentum at S√
Author: Hannah Arnold
Publisher:
Total Pages:
Release: 2016
Genre:
ISBN:

Abstract: A search for squarks and gluinos in final states containing hadronic jets, missing transverse momentum but no electrons or muons is presented. The data were recorded in 2015 by the ATLAS experiment in s√=13 TeV proton-proton collisions at the Large Hadron Collider. No excess above the Standard Model background expectation was observed in 3.2 fb−1 of analyzed data. Results are interpreted within simplified models that assume R-parity is conserved and the neutralino is the lightest supersymmetric particle. An exclusion limit at the 95 % confidence level on the mass of the gluino is set at 1.51 TeV for a simplified model incorporating only a gluino octet and the lightest neutralino, assuming the lightest neutralino is massless. For a simplified model involving the strong production of mass-degenerate first- and second-generation squarks, squark masses below 1.03 TeV are excluded for a massless lightest neutralino. These limits substantially extend the region of supersymmetric parameter space excluded by previous measurements with the ATLAS detector

Search for Squarks and Gluinos in Final States with Jets and Missing Transverse Momentum at {u221A}s

Search for Squarks and Gluinos in Final States with Jets and Missing Transverse Momentum at {u221A}s
Author:
Publisher:
Total Pages:
Release: 2016
Genre:
ISBN:

In this paper, a search for squarks and gluinos in final states containing hadronic jets, missing transverse momentum but no electrons or muons is presented. The data were recorded in 2015 by the ATLAS experiment in √s=13 TeV proton–proton collisions at the Large Hadron Collider. No excess above the Standard Model background expectation was observed in 3.2 fb-1 of analyzed data. Results are interpreted within simplified models that assume R-parity is conserved and the neutralino is the lightest supersymmetric particle. An exclusion limit at the 95 % confidence level on the mass of the gluino is set at 1.51 TeV for a simplified model incorporating only a gluino octet and the lightest neutralino, assuming the lightest neutralino is massless. For a simplified model involving the strong production of mass-degenerate first- and second-generation squarks, squark masses below 1.03 TeV are excluded for a massless lightest neutralino. Finally, these limits substantially extend the region of supersymmetric parameter space excluded by previous measurements with the ATLAS detector.

Summary of the Searches for Squarks and Gluinos Using {u221A}s

Summary of the Searches for Squarks and Gluinos Using {u221A}s
Author:
Publisher:
Total Pages: 100
Release: 2015
Genre:
ISBN:

A summary is presented of ATLAS searches for gluinos and first- and second-generation squarks in final states containing jets and missing transverse momentum, with or without leptons or b-jets, in the √s = 8 TeV data set collected at the Large Hadron Collider in 2012. This paper reports the results of new interpretations and statistical combinations of previously published analyses, as well as a new analysis. Since no significant excess of events over the Standard Model expectation is observed, the data are used to set limits in a variety of models. In all the considered simplified models that assume R-parity conservation, the limit on the gluino mass exceeds 1150 GeV at 95% confidence level, for an LSP mass smaller than 100 GeV. Moreover, exclusion limits are set for left-handed squarks in a phenomenological MSSM model, a minimal Supergravity/Constrained MSSM model, R-parity-violation scenarios, a minimal gauge-mediated supersymmetry breaking model, a natural gauge mediation model, a non-universal Higgs mass model with gaugino mediation and a minimal model of universal extra dimensions.

Searches for Squarks and Gluinos with the ATLAS Detector

Searches for Squarks and Gluinos with the ATLAS Detector
Author: Philipp Mogg
Publisher:
Total Pages: 0
Release: 2019
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ISBN:

Abstract: Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. This talk summarizes recent ATLAS results on searches for supersymmetric squarks and gluinos, including third generation squarks produced directly or via decay of gluinos. The searches involve final states containing jets (possibly identified as coming from b-quarks), missing transverse momentum and, in some cases, leptons, and were performed with pp collisions at a centre-of-mass energy of 13 TeV

Search for Squarks and Gluinos in Events with Jets and Missing Transverse Energy in P Anti-p Collisions at S**1/2

Search for Squarks and Gluinos in Events with Jets and Missing Transverse Energy in P Anti-p Collisions at S**1/2
Author:
Publisher:
Total Pages: 8
Release: 2006
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The results of a search for squarks and gluinos using data from ppbar collisions recorded at a center-of-mass energy of 1.96 TeV by the D0 detector at the Fermilab Tevatron Collider are reported. The topologies analyzed consist of acoplanar-jet and multijet events with large missing transverse energy. No evidence for the production of squarks or gluinos was found in a data sample of 310 pb-1. Lower limits of 325 and 241 GeV were derived at the 95% C.L. on the squark and gluino masses, respectively, within the framework of minimal supergravity with tan[beta]=3, A0=0, and mu

Searches for Squarks and Gluinos at CDF and D0 Detectors

Searches for Squarks and Gluinos at CDF and D0 Detectors
Author:
Publisher:
Total Pages: 3
Release: 2007
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This contribution reports on preliminary measurements of searches for squarks and gluinos at CDF and D0 detectors in p{bar p} collisions at (square root)s = 1.96 TeV using 1 fb−1 of data. The analyses are optimized for event topologies with multiple jets and large missing transverse energy in the final state. No excess with respect to the Standard Model predictions is observed and new limits on the gluino and squark masses are extracted in a mSUGRA scenario with R-parity conservation.

A Search for Squarks and Gluinos Using the Jets and Missing Energy Signature at D-0

A Search for Squarks and Gluinos Using the Jets and Missing Energy Signature at D-0
Author:
Publisher:
Total Pages: 226
Release: 1997
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This thesis reports on a search for evidence of production and decay of squarks (q) and gluinos (g) of Minimal Supergravity (mSUGRA) in p{bar p} collisions at a center of mass energy of 1.8 TeV using the D0 detector at the Fermi National Accelerator Laboratory. Data corresponding to 79.2 ± 4.2 pb−1 were examined for events with large missing transverse energy (E{sub T}), three or more jets, high energy leading jet, and the absence of isolated leptons. Since no events were observed in excess of Standard Model background predictions, limits are placed in the mSUGRA M0 - M{sub {1/2}} plane for fixed parameters tan? = 2, A{sub o} = 0, and?

Search for Squarks and Gluinos with the D-Zero Detector

Search for Squarks and Gluinos with the D-Zero Detector
Author:
Publisher:
Total Pages: 11
Release: 1997
Genre:
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We report on a search for squarks and gluinos in p{anti p} collisions at (square root) s= 1.8 TeV using the D0 detector at Fermilab. Data corresponding to 79.2 " 4.2 pb−1 were examined for events with large missing transverse energy, three or more jets, and the absence of isolated leptons. No events were observed significantly in excess of Standard Model background predictions, and we place limits on the Minimal Supergravity parameters M0 and M12.