Search For Tev Scale Gravity Signatures In Final States With Leptons And Jets With The Atlas Detector At Square Root Of
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Search for TeV-scale Gravity Signatures in Final States with Leptons and Jets with the ATLAS Detector at [square Root Of]
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Theories postulating extra spatial dimensions into which the gravitational field can propagate provide interesting extensions to the Standard Model addressing the hierarchy problem. These frameworks predict TeV-scale gravity signatures, such as black hole or string ball production, that could be observed at the Large Hadron Collider. Said black holes decay into a high multiplicity of particles with typical energies ranging in the few 100 GeV. The production of events with multiple high transverse momentum particles including charged leptons and jets is measured, using 13.0 fb 1 of proton-proton collision data recorded by the ATLAS detector during 2012 at s = 8 TeV. No excess beyond Standard Model expectations is observed, and upper limits on the cross sections for non-Standard Model production of these final states are set.
Search for TeV-scale Gravity Signatures in High-mass Final States with Leptons and Jets with the ATLAS Detector at {u221A}s
In this paper, a search for physics beyond the Standard Model, in final states with at least one high transverse momentum charged lepton (electron or muon) and two additional high transverse momentum leptons or jets, is performed using 3.2 fb-1 of proton–proton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2015 at √s=13 TeV. The upper end of the distribution of the scalar sum of the transverse momenta of leptons and jets is sensitive to the production of high-mass objects. No excess of events beyond Standard Model predictions is observed. Finally, exclusion limits are set for models of microscopic black holes with two to six extra dimensions.
A Search for T[anti T] [yields] Lepton + E[sub T] + Jets Signature in P[anti P] Collisions at [radical]
The authors report the results from a search for t[anti t] production in p[anti p] collisions at [radical]s = 1.8 TeV with the D0 detector at Fermilab in the final states consisting of one isolated high p[sub T] lepton (e or [mu]), multiple jets and a substantial missing transverse energy (E[sub T]), excluding the events that have [mu]-tagged jets. Two independent analysis approaches lead them to similar estimates for the cross-section. They see no conclusive evidence for top production in the 13.5 pb[sup [minus]1] of data taken during the 1992--1993 run of the Tevatron.