A search for prompt lepton-jets in pp collisions at sqrt(s)=7 TeV with the ATLAS detector

ATLAS Collaboration; Wahid Bhimji; Andy Buckley; Philip Clark; Robert Harrington; Victoria Martin

doi:10.1016/j.physletb.2013.01.034

A search for prompt lepton-jets in pp collisions at sqrt(s)=7 TeV with the ATLAS detector

ATLAS Collaboration
, Wahid Bhimji
, Andy Buckley
, Philip Clark
, Robert Harrington
, Victoria Martin

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present a search for a light (mass <2 GeV) 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 sqrt(s) = 7 TeV 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.

Original language	English
Pages (from-to)	299-317
Number of pages	19
Journal	Physics Letters B
Volume	B719
DOIs	https://doi.org/10.1016/j.physletb.2013.01.034
Publication status	Published - 2013

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10.1016/j.physletb.2013.01.034

A search for prompt lepton jets in pp collisions at sqrts=7 TeV with the ATLAS detectorFinal published version, 1.26 MB

http://arxiv.org/abs/1212.5409

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title = "A search for prompt lepton-jets in pp collisions at sqrt(s)=7 TeV with the ATLAS detector",

abstract = "We present a search for a light (mass <2 GeV) 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 sqrt(s) = 7 TeV 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.",

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doi = "10.1016/j.physletb.2013.01.034",

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T1 - A search for prompt lepton-jets in pp collisions at sqrt(s)=7 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Bhimji, Wahid

AU - Buckley, Andy

AU - Clark, Philip

AU - Harrington, Robert

AU - Martin, Victoria

N1 - CERN-PH-EP-2012-319

PY - 2013

Y1 - 2013

N2 - We present a search for a light (mass <2 GeV) 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 sqrt(s) = 7 TeV 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.

AB - We present a search for a light (mass <2 GeV) 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 sqrt(s) = 7 TeV 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.

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DO - 10.1016/j.physletb.2013.01.034

M3 - Article

SN - 0370-2693

VL - B719

SP - 299

EP - 317

JO - Physics Letters B

JF - Physics Letters B

ER -

A search for prompt lepton-jets in pp collisions at sqrt(s)=7 TeV with the ATLAS detector

Abstract

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