Search for resonances in the dilepton mass distribution in pp collisions at √s = 7TeV

The CMS collaboration

doi:10.1007/JHEP05(2011)093

Search for resonances in the dilepton mass distribution in pp collisions at √s = 7TeV

The CMS collaboration

Physics and Astronomy

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

30 Scopus citations

Abstract

A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at √s = 7TeV. The event samples correspond to integrated luminosities of 40 pb^-1in the dimuon channel and 35 pb^-1in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z') or as Kaluza- Klein graviton excitations (G_KK) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z'(G_KK) ! ℓ⁺ℓ^-relative to Z → ℓ⁺ℓ^-are presented. These limits exclude at 95% confidence level a Z' with standard-model-like couplings below 1140 GeV, the superstring-inspired Z' ψ below 887 GeV, and, for values of the coupling parameter k√MPl of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.

Original language	English (US)
Article number	93
Journal	Journal of High Energy Physics
Volume	2011
Issue number	5
DOIs	https://doi.org/10.1007/JHEP05(2011)093
State	Published - 2011

Funding

Keywords

Hadron-hadron scattering

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP05(2011)093

Cite this

@article{38443eefd2a346d69e31e96e3ef92b47,

title = "Search for resonances in the dilepton mass distribution in pp collisions at √s = 7TeV",

abstract = "A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at √s = 7TeV. The event samples correspond to integrated luminosities of 40 pb-1in the dimuon channel and 35 pb-1in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z') or as Kaluza- Klein graviton excitations (GKK) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z'(GKK) ! ℓ+ℓ-relative to Z → ℓ+ℓ-are presented. These limits exclude at 95% confidence level a Z' with standard-model-like couplings below 1140 GeV, the superstring-inspired Z' ψ below 887 GeV, and, for values of the coupling parameter k√MPl of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.",

keywords = "Hadron-hadron scattering",

author = "{The CMS collaboration} and {Correction Chatrchyan}, S. and V. Khachatryan and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and T. Bergauer and M. Dragicevic and J. Er{\"o} and C. Fabjan and M. Friedl and R. Fr{\"u}hwirth and Ghete, {V. M.} and J. Hammer and S. H{\"a}nsel and M. Hoch and N. H{\"o}rmann and J. Hrubec and M. Jeitler and G. Kasieczka and W. Kiesenhofer and M. Krammer and D. Liko and I. Mikulec and M. Pernicka and H. Rohringer and R. Sch{\"o}fbeck and J. Strauss and F. Teischinger and P. Wagner and W. Waltenberger and G. Walzel and E. Widl and Wulz, {C. E.} and V. Mossolov and N. Shumeiko and {Suarez Gonzalez}, J. and L. Benucci and {De Wolf}, {E. A.} and X. Janssen and T. Maes and L. Mucibello and S. Ochesanu and B. Roland and R. Rougny and M. Selvaggi and {Van Haevermaet}, H. and {Van Mechelen}, P. and Hahn, {Kristian Allan} and Schmitt, {Michael H} and Mayda Velasco",

year = "2011",

doi = "10.1007/JHEP05(2011)093",

language = "English (US)",

volume = "2011",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "5",

}

TY - JOUR

T1 - Search for resonances in the dilepton mass distribution in pp collisions at √s = 7TeV

AU - The CMS collaboration

AU - Correction Chatrchyan, S.

AU - Khachatryan, V.

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Bergauer, T.

AU - Dragicevic, M.

AU - Erö, J.

AU - Fabjan, C.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hammer, J.

AU - Hänsel, S.

AU - Hoch, M.

AU - Hörmann, N.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Kasieczka, G.

AU - Kiesenhofer, W.

AU - Krammer, M.

AU - Liko, D.

AU - Mikulec, I.

AU - Pernicka, M.

AU - Rohringer, H.

AU - Schöfbeck, R.

AU - Strauss, J.

AU - Teischinger, F.

AU - Wagner, P.

AU - Waltenberger, W.

AU - Walzel, G.

AU - Widl, E.

AU - Wulz, C. E.

AU - Mossolov, V.

AU - Shumeiko, N.

AU - Suarez Gonzalez, J.

AU - Benucci, L.

AU - De Wolf, E. A.

AU - Janssen, X.

AU - Maes, T.

AU - Mucibello, L.

AU - Ochesanu, S.

AU - Roland, B.

AU - Rougny, R.

AU - Selvaggi, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Hahn, Kristian Allan

AU - Schmitt, Michael H

AU - Velasco, Mayda

PY - 2011

Y1 - 2011

N2 - A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at √s = 7TeV. The event samples correspond to integrated luminosities of 40 pb-1in the dimuon channel and 35 pb-1in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z') or as Kaluza- Klein graviton excitations (GKK) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z'(GKK) ! ℓ+ℓ-relative to Z → ℓ+ℓ-are presented. These limits exclude at 95% confidence level a Z' with standard-model-like couplings below 1140 GeV, the superstring-inspired Z' ψ below 887 GeV, and, for values of the coupling parameter k√MPl of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.

AB - A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at √s = 7TeV. The event samples correspond to integrated luminosities of 40 pb-1in the dimuon channel and 35 pb-1in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z') or as Kaluza- Klein graviton excitations (GKK) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z'(GKK) ! ℓ+ℓ-relative to Z → ℓ+ℓ-are presented. These limits exclude at 95% confidence level a Z' with standard-model-like couplings below 1140 GeV, the superstring-inspired Z' ψ below 887 GeV, and, for values of the coupling parameter k√MPl of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.

KW - Hadron-hadron scattering

UR - http://www.scopus.com/inward/record.url?scp=80053133985&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80053133985&partnerID=8YFLogxK

U2 - 10.1007/JHEP05(2011)093

DO - 10.1007/JHEP05(2011)093

M3 - Article

AN - SCOPUS:80053133985

SN - 1126-6708

VL - 2011

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 5

M1 - 93

ER -

Search for resonances in the dilepton mass distribution in pp collisions at √s = 7TeV

Abstract

Funding

Keywords

ASJC Scopus subject areas

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