Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in vs = 7 TeV pp collisions at the LHC

G. Aad...[et al.]; Mogens Dam; John Renner Hansen; Jørgen Beck Hansen; Jørn Dines Hansen; Peter Henrik Hansen; Morten Dam Jørgensen; Esben Bryndt Klinkby; Troels Christian Petersen; Stefania Xella; Nele Maria Philomena Boelaert; Thomas Høvring Kittelmann

doi:10.1103/PhysRevLett.106.251801

Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in vs = 7 TeV pp collisions at the LHC

G. Aad...[et al.], Mogens Dam, John Renner Hansen, Jørgen Beck Hansen, Jørn Dines Hansen, Peter Henrik Hansen, Morten Dam Jørgensen, Esben Bryndt Klinkby, Troels Christian Petersen, Stefania Xella, Nele Maria Philomena Boelaert, Thomas Høvring Kittelmann

15 Citations (Scopus)

Abstract

This Letter presents the first search for a heavy particle decaying into an e±μss final state in √s=7TeV pp collisions at the LHC. The data were recorded by the ATLAS detector during 2010 and correspond to a total integrated luminosity of 35pb^-1. No excess above the standard model background expectation is observed. Exclusions at 95% confidence level are placed on two representative models. In an R-parity violating supersymmetric model, tau sneutrinos with a mass below 0.75 TeV are excluded, assuming all R-parity violating couplings are zero except λ311′=0.11 and λ₃₁₂=0.07. In a lepton flavor violating model, a Z′-like vector boson with masses of 0.70-1.00 TeV and corresponding cross sections times branching ratios of 0.175-0.183 pb is excluded. These results extend to higher mass R-parity violating sneutrinos and lepton flavor violating Z's than previous constraints from the Tevatron.

Original language	English
Journal	Physical Review Letters
Volume	106
Issue number	25
Pages (from-to)	251801
Number of pages	18
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.106.251801
Publication status	Published - 22 Jun 2011

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10.1103/PhysRevLett.106.251801

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Aad...[et al.], G., Dam, M., Hansen, J. R., Hansen, J. B., Hansen, J. D., Hansen, P. H., Jørgensen, M. D., Klinkby, E. B., Petersen, T. C., Xella, S., Boelaert, N. M. P., & Kittelmann, T. H. (2011). Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in vs = 7 TeV pp collisions at the LHC. Physical Review Letters, 106(25), 251801. https://doi.org/10.1103/PhysRevLett.106.251801

Aad...[et al.], G, Dam, M , Hansen, JR , Hansen, JB , Hansen, JD , Hansen, PH, Jørgensen, MD, Klinkby, EB, Petersen, TC , Xella, S, Boelaert, NMP & Kittelmann, TH 2011, 'Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in vs = 7 TeV pp collisions at the LHC', Physical Review Letters, vol. 106, no. 25, pp. 251801. https://doi.org/10.1103/PhysRevLett.106.251801

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title = "Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in vs = 7 TeV pp collisions at the LHC",

abstract = "This Letter presents the first search for a heavy particle decaying into an e±μss final state in √s=7TeV pp collisions at the LHC. The data were recorded by the ATLAS detector during 2010 and correspond to a total integrated luminosity of 35pb-1. No excess above the standard model background expectation is observed. Exclusions at 95% confidence level are placed on two representative models. In an R-parity violating supersymmetric model, tau sneutrinos with a mass below 0.75 TeV are excluded, assuming all R-parity violating couplings are zero except λ311′=0.11 and λ312=0.07. In a lepton flavor violating model, a Z′-like vector boson with masses of 0.70-1.00 TeV and corresponding cross sections times branching ratios of 0.175-0.183 pb is excluded. These results extend to higher mass R-parity violating sneutrinos and lepton flavor violating Z's than previous constraints from the Tevatron.",

author = "{Aad...[et al.]}, G. and Mogens Dam and Hansen, {John Renner} and Hansen, {J{\o}rgen Beck} and Hansen, {J{\o}rn Dines} and Hansen, {Peter Henrik} and J{\o}rgensen, {Morten Dam} and Klinkby, {Esben Bryndt} and Petersen, {Troels Christian} and Stefania Xella and Boelaert, {Nele Maria Philomena} and Kittelmann, {Thomas H{\o}vring}",

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T1 - Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in vs = 7 TeV pp collisions at the LHC

AU - Aad...[et al.], G.

AU - Dam, Mogens

AU - Hansen, John Renner

AU - Hansen, Jørgen Beck

AU - Hansen, Jørn Dines

AU - Hansen, Peter Henrik

AU - Jørgensen, Morten Dam

AU - Klinkby, Esben Bryndt

AU - Petersen, Troels Christian

AU - Xella, Stefania

AU - Boelaert, Nele Maria Philomena

AU - Kittelmann, Thomas Høvring

PY - 2011/6/22

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N2 - This Letter presents the first search for a heavy particle decaying into an e±μss final state in √s=7TeV pp collisions at the LHC. The data were recorded by the ATLAS detector during 2010 and correspond to a total integrated luminosity of 35pb-1. No excess above the standard model background expectation is observed. Exclusions at 95% confidence level are placed on two representative models. In an R-parity violating supersymmetric model, tau sneutrinos with a mass below 0.75 TeV are excluded, assuming all R-parity violating couplings are zero except λ311′=0.11 and λ312=0.07. In a lepton flavor violating model, a Z′-like vector boson with masses of 0.70-1.00 TeV and corresponding cross sections times branching ratios of 0.175-0.183 pb is excluded. These results extend to higher mass R-parity violating sneutrinos and lepton flavor violating Z's than previous constraints from the Tevatron.

AB - This Letter presents the first search for a heavy particle decaying into an e±μss final state in √s=7TeV pp collisions at the LHC. The data were recorded by the ATLAS detector during 2010 and correspond to a total integrated luminosity of 35pb-1. No excess above the standard model background expectation is observed. Exclusions at 95% confidence level are placed on two representative models. In an R-parity violating supersymmetric model, tau sneutrinos with a mass below 0.75 TeV are excluded, assuming all R-parity violating couplings are zero except λ311′=0.11 and λ312=0.07. In a lepton flavor violating model, a Z′-like vector boson with masses of 0.70-1.00 TeV and corresponding cross sections times branching ratios of 0.175-0.183 pb is excluded. These results extend to higher mass R-parity violating sneutrinos and lepton flavor violating Z's than previous constraints from the Tevatron.

U2 - 10.1103/PhysRevLett.106.251801

DO - 10.1103/PhysRevLett.106.251801

M3 - Journal article

SN - 0031-9007

VL - 106

SP - 251801

JO - Physical Review Letters

JF - Physical Review Letters

IS - 25

ER -

Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in vs = 7 TeV pp collisions at the LHC

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