Further search for supersymmetry at root s=7 TeV in final states with jets, missing transverse momentum, and isolated leptons with the ATLAS detector

G. Aad; Mogens Dam; Jørgen Beck Hansen; Peter Henrik Hansen; John Renner Hansen; Jørn Dines Hansen; Simon Johann Franz Heisterkamp; Morten Dam Jørgensen; Esben Bryndt Klinkby; Björn Stefan Nilsson; Sascha Mehlhase; Troels Christian Petersen; Nele Maria Philomena Boelaert; Stefania Xella; Ask Emil Løvschall-Jensen

doi:10.1103/PhysRevD.86.092002

Further search for supersymmetry at root s=7 TeV in final states with jets, missing transverse momentum, and isolated leptons with the ATLAS detector

G. Aad, Mogens Dam, Jørgen Beck Hansen, Peter Henrik Hansen, John Renner Hansen, Jørn Dines Hansen, Simon Johann Franz Heisterkamp, Morten Dam Jørgensen, Esben Bryndt Klinkby, Björn Stefan Nilsson, Sascha Mehlhase, Troels Christian Petersen, Nele Maria Philomena Boelaert, Stefania Xella, Ask Emil Løvschall-Jensen

67 Citations (Scopus)

Abstract

This work presents a new inclusive search for supersymmetry (SUSY) by the ATLAS experiment at the LHC in proton-proton collisions at a center-of-mass energy √s=7TeV in final states with jets, missing transverse momentum and one or more isolated electrons and/or muons. The search is based on data from the full 2011 data-taking period, corresponding to an integrated luminosity of 4.7fb^-1. Single-lepton and multilepton channels are treated together in one analysis. An increase in sensitivity is obtained by simultaneously fitting the number of events in statistically independent signal regions, and the shapes of distributions within those regions. A dedicated signal region is introduced to be sensitive to decay cascades of SUSY particles with small mass differences ("compressed SUSY"). Background uncertainties are constrained by fitting to the jet-multiplicity distribution in background control regions. Observations are consistent with Standard Model expectations, and limits are set or extended on a number of SUSY models.

Original language	English
Journal	Physical Review D (Particles, Fields, Gravitation and Cosmology)
Volume	86
Issue number	9
Pages (from-to)	092002
Number of pages	18
ISSN	1550-7998
DOIs	https://doi.org/10.1103/PhysRevD.86.092002
Publication status	Published - 2 Nov 2012

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Aad, G., Dam, M., Hansen, J. B., Hansen, P. H., Hansen, J. R., Hansen, J. D., Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Nilsson, B. S., Mehlhase, S., Petersen, T. C., Boelaert, N. M. P., Xella, S., & Løvschall-Jensen, A. E. (2012). Further search for supersymmetry at root s=7 TeV in final states with jets, missing transverse momentum, and isolated leptons with the ATLAS detector. Physical Review D (Particles, Fields, Gravitation and Cosmology), 86(9), 092002. https://doi.org/10.1103/PhysRevD.86.092002

Further search for supersymmetry at root s=7 TeV in final states with jets, missing transverse momentum, and isolated leptons with the ATLAS detector. / Aad, G.; Dam, Mogens ; Hansen, Jørgen Beck et al.
In: Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol. 86, No. 9, 02.11.2012, p. 092002.

Research output: Contribution to journal › Journal article › Research › peer-review

Aad, G, Dam, M , Hansen, JB , Hansen, PH , Hansen, JR , Hansen, JD, Heisterkamp, SJF, Jørgensen, MD, Klinkby, EB, Nilsson, BS, Mehlhase, S, Petersen, TC, Boelaert, NMP, Xella, S & Løvschall-Jensen, AE 2012, 'Further search for supersymmetry at root s=7 TeV in final states with jets, missing transverse momentum, and isolated leptons with the ATLAS detector', Physical Review D (Particles, Fields, Gravitation and Cosmology), vol. 86, no. 9, pp. 092002. https://doi.org/10.1103/PhysRevD.86.092002

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abstract = "This work presents a new inclusive search for supersymmetry (SUSY) by the ATLAS experiment at the LHC in proton-proton collisions at a center-of-mass energy √s=7TeV in final states with jets, missing transverse momentum and one or more isolated electrons and/or muons. The search is based on data from the full 2011 data-taking period, corresponding to an integrated luminosity of 4.7fb-1. Single-lepton and multilepton channels are treated together in one analysis. An increase in sensitivity is obtained by simultaneously fitting the number of events in statistically independent signal regions, and the shapes of distributions within those regions. A dedicated signal region is introduced to be sensitive to decay cascades of SUSY particles with small mass differences ({"}compressed SUSY{"}). Background uncertainties are constrained by fitting to the jet-multiplicity distribution in background control regions. Observations are consistent with Standard Model expectations, and limits are set or extended on a number of SUSY models.",

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AU - Hansen, Peter Henrik

AU - Hansen, John Renner

AU - Hansen, Jørn Dines

AU - Heisterkamp, Simon Johann Franz

AU - Jørgensen, Morten Dam

AU - Klinkby, Esben Bryndt

AU - Nilsson, Björn Stefan

AU - Mehlhase, Sascha

AU - Petersen, Troels Christian

AU - Boelaert, Nele Maria Philomena

AU - Xella, Stefania

AU - Løvschall-Jensen, Ask Emil

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AB - This work presents a new inclusive search for supersymmetry (SUSY) by the ATLAS experiment at the LHC in proton-proton collisions at a center-of-mass energy √s=7TeV in final states with jets, missing transverse momentum and one or more isolated electrons and/or muons. The search is based on data from the full 2011 data-taking period, corresponding to an integrated luminosity of 4.7fb-1. Single-lepton and multilepton channels are treated together in one analysis. An increase in sensitivity is obtained by simultaneously fitting the number of events in statistically independent signal regions, and the shapes of distributions within those regions. A dedicated signal region is introduced to be sensitive to decay cascades of SUSY particles with small mass differences ("compressed SUSY"). Background uncertainties are constrained by fitting to the jet-multiplicity distribution in background control regions. Observations are consistent with Standard Model expectations, and limits are set or extended on a number of SUSY models.

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JO - Physical Review D (Particles, Fields, Gravitation and Cosmology)

JF - Physical Review D (Particles, Fields, Gravitation and Cosmology)

IS - 9

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Further search for supersymmetry at root s=7 TeV in final states with jets, missing transverse momentum, and isolated leptons with the ATLAS detector

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