Search for excited leptons in pp collisions at s=7 TeV

CMS Collaboration

doi:10.1016/j.physletb.2013.02.031

Search for excited leptons in pp collisions at s=7 TeV

CMS Collaboration

European Organization for Nuclear Research
Yerevan Physics Institute
Institut für Hochenergiephysik
Vienna University of Technology
National Centre for Particle and High Energy Physics
University of Antwerp
Vrjie Universiteit Brussel
Université Libre de Bruxelles
Ghent University
University of Louvain
National Institute of Chemical Physics and Biophysics, Tallinn
Université de Mons
Centro Brasileiro de Pesquisas Fisicas
Rua São Francisco de Xavier
São Paulo State University
Federal University of ABC (UFABC)
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
University of Sofia
Institute of High Energy Physics, Chinese Academy of Sciences
Tsinghua University
Universidad de Los Andes, Colombia
University of Split
Ruđer Bošković Institute
University of Cyprus
Charles University
Egyptian Network of High Energy Physics
Suez Canal University
Cairo University
Zewail City of Science and Technology
Fayoum University
British University in Egypt
Ain Shams University
University of Helsinki
Helsinki Institute of Physics
LUT University
CEA/UVSQ/CNRS
Ip Paris
National Centre for Nuclear Research
Université de Strasbourg
Université de Haute Alsace
Université Paris-Sud
IGFL, Université de Lyon, Université Lyon 1
Tbilisi State University
Joint Institute for Nuclear Research, Dubna
RWTH Aachen University
c/o DESY
Joint Faculty of the Brandenburg University of Technology Cottbus Senftenberg
Universität Hamburg
Universität Karlsruhe/Forschungszentrum Karlsruhe
Moscow State University
Institute of Nuclear Physics Demokritos
University of Athens
University of Ioannina
Wigner Research Centre for Physics
Institute of Nuclear Research ATOMKI
University of Debrecen
Panjab University
University of Delhi
Saha Institute of Nuclear Physics
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research, Mumbai
University of Visva-Bharati
Institute for Research in Fundamental Sciences (IPM)
Isfahan University of Technology
Sharif University of Technology
Islamic Azad University, Science and Research Branch
INFN Sezione di Bari
Università degli studi di Bari Aldo Moro
Politecnico di Bari
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University of Bologna
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Università degli Studi di Catania
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University of Florence
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University of Rome
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University of Pisa
University of Siena
University of Bucharest
Sezione di Roma
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University of Turin
Laboratory of Molecular Pathology
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Kangwon National University
Kyungpook National University
Chonnam National University
Korea University
University of Seoul
Sungkyunkwan University
Vilnius University
CINVESTAV-IPN
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Benemerita Universidad Autonoma de Puebla
Universidad Autónoma de San Luis Potosi
University of Auckland
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Quaid-i-Azam University
University of Warsaw
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Petersburg Nuclear Physics Institute (PNPI)
Institute for Nuclear Research of the Russian Academy of Sciences
Institute for Theoretical and Experimental Physics
California Institute of Technology
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Kurchatov Institute
University of Belgrade
University of Belgrade
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
University of Oviedo
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Eötvös Loránd University
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University of Bristol
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University of Southampton
Imperial College London
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Baylor University
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Women and Infants Hospital of Rhode Island-Warren Alpert Medical School of Brown University
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Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

20 Citations (Scopus)

Résumé

Results are presented of a search for compositeness in electrons and muons using a data sample of pp collisions at a center-of-mass energy s=7 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 5.0 fb⁻¹. Excited leptons (ℓ^⁎) are assumed to be produced via contact interactions in conjunction with a standard model lepton and to decay via ℓ^⁎→ℓγ, yielding a final state with two energetic leptons and a photon. The number of events observed in data is consistent with that expected from the standard model. The 95% confidence upper limits for the cross section for the production and decay of excited electrons (muons), with masses ranging from 0.6 to 2 TeV, are 1.48 to 1.24 fb (1.31 to 1.11 fb). Excited leptons with masses below 1.9 TeV are excluded for the case where the contact interaction scale equals the excited lepton mass. The limits on the cross sections are the most stringent ones published to date.

langue originale	Anglais
Pages (de - à)	309-329
Nombre de pages	21
journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	720
Numéro de publication	4-5
Les DOIs	https://doi.org/10.1016/j.physletb.2013.02.031
état	Publié - 26 mars 2013

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10.1016/j.physletb.2013.02.031

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@article{b00da95cb4474c01b2e6aefceca9a003,

title = "Search for excited leptons in pp collisions at s=7 TeV",

abstract = "Results are presented of a search for compositeness in electrons and muons using a data sample of pp collisions at a center-of-mass energy s=7 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 5.0 fb−1. Excited leptons (ℓ⁎) are assumed to be produced via contact interactions in conjunction with a standard model lepton and to decay via ℓ⁎→ℓγ, yielding a final state with two energetic leptons and a photon. The number of events observed in data is consistent with that expected from the standard model. The 95\% confidence upper limits for the cross section for the production and decay of excited electrons (muons), with masses ranging from 0.6 to 2 TeV, are 1.48 to 1.24 fb (1.31 to 1.11 fb). Excited leptons with masses below 1.9 TeV are excluded for the case where the contact interaction scale equals the excited lepton mass. The limits on the cross sections are the most stringent ones published to date.",

keywords = "CMS, Physics",

author = "\{CMS Collaboration\} and S. Chatrchyan and V. Khachatryan and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and E. Aguilo 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 N. H{\"o}rmann and J. Hrubec and M. Jeitler and W. Kiesenhofer and V. Kn{\"u}nz and M. Krammer and I. Kr{\"a}tschmer and D. Liko and I. Mikulec and M. Pernicka and B. Rahbaran and C. Rohringer and H. Rohringer and R. Sch{\"o}fbeck and J. Strauss and A. Taurok and W. Waltenberger and G. Walzel and E. Widl and Wulz, \{C. E.\} and V. Mossolov and N. Shumeiko and \{Suarez Gonzalez\}, J. and M. Bansal and S. Bansal and T. Cornelis and \{De Wolf\}, \{E. A.\} and X. Janssen and F. Beaudette and C. Charlot and \{Granier de Cassagnac\}, R. and M. Nguyen and C. Ochando and P. Paganini and Y. Sirois and A. Zabi",

note = "Publisher Copyright: {\textcopyright} 2013 CERN",

year = "2013",

month = mar,

day = "26",

doi = "10.1016/j.physletb.2013.02.031",

language = "English",

volume = "720",

pages = "309--329",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Search for excited leptons in pp collisions at s=7 TeV

AU - CMS Collaboration

AU - Chatrchyan, S.

AU - Khachatryan, V.

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Aguilo, E.

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 - Hörmann, N.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Kiesenhofer, W.

AU - Knünz, V.

AU - Krammer, M.

AU - Krätschmer, I.

AU - Liko, D.

AU - Mikulec, I.

AU - Pernicka, M.

AU - Rahbaran, B.

AU - Rohringer, C.

AU - Rohringer, H.

AU - Schöfbeck, R.

AU - Strauss, J.

AU - Taurok, A.

AU - Waltenberger, W.

AU - Walzel, G.

AU - Widl, E.

AU - Wulz, C. E.

AU - Mossolov, V.

AU - Shumeiko, N.

AU - Suarez Gonzalez, J.

AU - Bansal, M.

AU - Bansal, S.

AU - Cornelis, T.

AU - De Wolf, E. A.

AU - Janssen, X.

AU - Beaudette, F.

AU - Charlot, C.

AU - Granier de Cassagnac, R.

AU - Nguyen, M.

AU - Ochando, C.

AU - Paganini, P.

AU - Sirois, Y.

AU - Zabi, A.

PY - 2013/3/26

Y1 - 2013/3/26

N2 - Results are presented of a search for compositeness in electrons and muons using a data sample of pp collisions at a center-of-mass energy s=7 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 5.0 fb−1. Excited leptons (ℓ⁎) are assumed to be produced via contact interactions in conjunction with a standard model lepton and to decay via ℓ⁎→ℓγ, yielding a final state with two energetic leptons and a photon. The number of events observed in data is consistent with that expected from the standard model. The 95% confidence upper limits for the cross section for the production and decay of excited electrons (muons), with masses ranging from 0.6 to 2 TeV, are 1.48 to 1.24 fb (1.31 to 1.11 fb). Excited leptons with masses below 1.9 TeV are excluded for the case where the contact interaction scale equals the excited lepton mass. The limits on the cross sections are the most stringent ones published to date.

AB - Results are presented of a search for compositeness in electrons and muons using a data sample of pp collisions at a center-of-mass energy s=7 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 5.0 fb−1. Excited leptons (ℓ⁎) are assumed to be produced via contact interactions in conjunction with a standard model lepton and to decay via ℓ⁎→ℓγ, yielding a final state with two energetic leptons and a photon. The number of events observed in data is consistent with that expected from the standard model. The 95% confidence upper limits for the cross section for the production and decay of excited electrons (muons), with masses ranging from 0.6 to 2 TeV, are 1.48 to 1.24 fb (1.31 to 1.11 fb). Excited leptons with masses below 1.9 TeV are excluded for the case where the contact interaction scale equals the excited lepton mass. The limits on the cross sections are the most stringent ones published to date.

KW - CMS

KW - Physics

U2 - 10.1016/j.physletb.2013.02.031

DO - 10.1016/j.physletb.2013.02.031

M3 - Article

AN - SCOPUS:85035810716

SN - 0370-2693

VL - 720

SP - 309

EP - 329

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 4-5

ER -

Search for excited leptons in pp collisions at s=7 TeV

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