A search for prompt lepton-jets in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector - INSPIRE

DataBETA

A search for prompt lepton-jets in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector

ATLAS

Collaboration

Dec, 2012

9 pages

Published in:

Phys.Lett.B 719 (2013) 299-317

Published: Feb 26, 2013

e-Print:

1212.5409 [hep-ex]

DOI:

10.1016/j.physletb.2013.01.034

PDG: Supersymmetry miscellaneous results

Report number:

CERN-PH-EP-2012-319

Experiments:

CERN-LHC-ATLAS

View in:

reference search51 citations

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Abstract: (Elsevier)

We present a search for a light (mass <2GeV) boson predicted by Hidden Valley supersymmetric models that decays into a final state consisting of collimated muons or electrons, denoted ''lepton-jets''. The analysis uses 5fb^-^1 of s=7TeV proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider to search for the following signatures: single lepton-jets with at least four muons pairs of lepton-jets, each with two or more muons and pairs of lepton-jets with two or more electrons. This study finds no statistically significant deviation from the Standard Model prediction and places 95% confidence-level exclusion limits on the production cross section times branching ratio of light bosons for several parameter sets of a Hidden Valley model.

Note:

9 pages plus author list (24 in total), 3 figures, 4 tables. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2012-16/ Revision matches published version

p p: scattering
muon: multiplicity
electron: multiplicity
ATLAS
channel cross section: branching ratio: upper limit
CERN LHC Coll
supersymmetry
signature
new physics: search for
squark: pair production

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