Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector

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

doi:10.1103/PhysRevD.85.032004

Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector

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

40 Citations (Scopus)

Abstract

An inclusive search for anomalous production of two prompt, isolated muons with the same electric charge is presented. The search is performed in a data sample corresponding to 1.6fb^-1 of integrated luminosity collected in 2011 at √s=7TeV with the ATLAS detector at the LHC. Muon pairs are selected by requiring two isolated muons of the same electric charge with p _T>20GeV and |η|<2.5. Minimal requirements are placed on the rest of the event activity. The distribution of the invariant mass of the muon pair m(μμ) is found to agree well with the background expectation. Upper limits on the cross section for anomalous production of two muons with the same electric charge are placed as a function of m(μμ) within a fiducial region defined by the event selection. The fiducial cross-section limit constrains the like-sign top-quark pair-production cross section to be below 3.7pb at 95% confidence level. The data are also analyzed to search for a narrow like-sign dimuon resonance as predicted for e.g. doubly charged Higgs bosons (H ^±). Assuming pair production of H^± bosons and a branching ratio to muons of 100% (33%), this analysis excludes masses below 355 (244)GeV and 251 (209)GeV for H^± bosons coupling to left-handed and right-handed fermions, respectively.

Original language	English
Journal	Physical Review D (Particles, Fields, Gravitation and Cosmology)
Volume	85
Issue number	3
Pages (from-to)	032004
ISSN	1550-7998
DOIs	https://doi.org/10.1103/PhysRevD.85.032004
Publication status	Published - 17 Feb 2012

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Aad, G., Dam, M., Boelaert, N. M. P., Hansen, J. R., Hansen, J. B., Hansen, P. H., Hansen, J. D., Heisterkamp, S. J. F., Jørgensen, M. D., Mehlhase, S., Klinkby, E. B., Nilsson, B. S., Petersen, T. C., & Xella, S. (2012). Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector. Physical Review D (Particles, Fields, Gravitation and Cosmology), 85(3), 032004. https://doi.org/10.1103/PhysRevD.85.032004

Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector. / Aad, G.; Dam, Mogens; Boelaert, Nele Maria Philomena et al.

In: Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol. 85, No. 3, 17.02.2012, p. 032004.

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

Aad, G, Dam, M, Boelaert, NMP, Hansen, JR , Hansen, JB , Hansen, PH , Hansen, JD, Heisterkamp, SJF, Jørgensen, MD, Mehlhase, S, Klinkby, EB, Nilsson, BS, Petersen, TC & Xella, S 2012, 'Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector', Physical Review D (Particles, Fields, Gravitation and Cosmology), vol. 85, no. 3, pp. 032004. https://doi.org/10.1103/PhysRevD.85.032004

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title = "Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector",

abstract = "An inclusive search for anomalous production of two prompt, isolated muons with the same electric charge is presented. The search is performed in a data sample corresponding to 1.6fb-1 of integrated luminosity collected in 2011 at √s=7TeV with the ATLAS detector at the LHC. Muon pairs are selected by requiring two isolated muons of the same electric charge with p T>20GeV and |η|<2.5. Minimal requirements are placed on the rest of the event activity. The distribution of the invariant mass of the muon pair m(μμ) is found to agree well with the background expectation. Upper limits on the cross section for anomalous production of two muons with the same electric charge are placed as a function of m(μμ) within a fiducial region defined by the event selection. The fiducial cross-section limit constrains the like-sign top-quark pair-production cross section to be below 3.7pb at 95% confidence level. The data are also analyzed to search for a narrow like-sign dimuon resonance as predicted for e.g. doubly charged Higgs bosons (H ±). Assuming pair production of H± bosons and a branching ratio to muons of 100% (33%), this analysis excludes masses below 355 (244)GeV and 251 (209)GeV for H± bosons coupling to left-handed and right-handed fermions, respectively.",

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AU - Aad, G.

AU - Dam, Mogens

AU - Boelaert, Nele Maria Philomena

AU - Hansen, John Renner

AU - Hansen, Jørgen Beck

AU - Hansen, Peter Henrik

AU - Hansen, Jørn Dines

AU - Heisterkamp, Simon Johann Franz

AU - Jørgensen, Morten Dam

AU - Mehlhase, Sascha

AU - Klinkby, Esben Bryndt

AU - Nilsson, Björn Stefan

AU - Petersen, Troels Christian

AU - Xella, Stefania

PY - 2012/2/17

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N2 - An inclusive search for anomalous production of two prompt, isolated muons with the same electric charge is presented. The search is performed in a data sample corresponding to 1.6fb-1 of integrated luminosity collected in 2011 at √s=7TeV with the ATLAS detector at the LHC. Muon pairs are selected by requiring two isolated muons of the same electric charge with p T>20GeV and |η|<2.5. Minimal requirements are placed on the rest of the event activity. The distribution of the invariant mass of the muon pair m(μμ) is found to agree well with the background expectation. Upper limits on the cross section for anomalous production of two muons with the same electric charge are placed as a function of m(μμ) within a fiducial region defined by the event selection. The fiducial cross-section limit constrains the like-sign top-quark pair-production cross section to be below 3.7pb at 95% confidence level. The data are also analyzed to search for a narrow like-sign dimuon resonance as predicted for e.g. doubly charged Higgs bosons (H ±). Assuming pair production of H± bosons and a branching ratio to muons of 100% (33%), this analysis excludes masses below 355 (244)GeV and 251 (209)GeV for H± bosons coupling to left-handed and right-handed fermions, respectively.

AB - An inclusive search for anomalous production of two prompt, isolated muons with the same electric charge is presented. The search is performed in a data sample corresponding to 1.6fb-1 of integrated luminosity collected in 2011 at √s=7TeV with the ATLAS detector at the LHC. Muon pairs are selected by requiring two isolated muons of the same electric charge with p T>20GeV and |η|<2.5. Minimal requirements are placed on the rest of the event activity. The distribution of the invariant mass of the muon pair m(μμ) is found to agree well with the background expectation. Upper limits on the cross section for anomalous production of two muons with the same electric charge are placed as a function of m(μμ) within a fiducial region defined by the event selection. The fiducial cross-section limit constrains the like-sign top-quark pair-production cross section to be below 3.7pb at 95% confidence level. The data are also analyzed to search for a narrow like-sign dimuon resonance as predicted for e.g. doubly charged Higgs bosons (H ±). Assuming pair production of H± bosons and a branching ratio to muons of 100% (33%), this analysis excludes masses below 355 (244)GeV and 251 (209)GeV for H± bosons coupling to left-handed and right-handed fermions, respectively.

U2 - 10.1103/PhysRevD.85.032004

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SP - 032004

JO - Physical Review D

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IS - 3

ER -

Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector

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