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Search for doubly charged Higgs bosons in like-sign dilepton final states at root s=7 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2906
2012 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 72, no 12, 2244- p.Article in journal (Refereed) Published
Abstract [en]

A search for doubly charged Higgs bosons decaying to pairs of electrons and/or muons is presented. The search is performed using a data sample corresponding to an integrated luminosity of 4.7 fb(-1) of pp collisions at root s = 7 TeV collected by the ATLAS detector at the LHC. Pairs of prompt, isolated, high-p(T) leptons with the same electric charge (e(+/-)e(+/-), e(+/-)mu, mu(+/-)mu(+/-)) are selected, and their invariant mass distribution is searched for a narrow resonance. No significant excess over Standard Model background expectations is observed, and limits are placed on the cross section times branching ratio for pair production of doubly charged Higgs bosons. The masses of doubly charged Higgs bosons are constrained depending on the branching ratio into these leptonic final states. Assuming pair production, coupling to left-handed fermions, and a branching ratio of 100% for each final state, masses below 409 GeV, 375 GeV, and 398 GeV are excluded for e(+/-)e(+/-), e(+/-)mu(+/-),and mu(+/-)mu(+/-), respectively.

Place, publisher, year, edition, pages
2012. Vol. 72, no 12, 2244- p.
Keyword [en]
Majorana Neutrino Masses, Lepton-Number, Model, Violation, Symmetry, Parity, Lhc
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-119773DOI: 10.1140/epjc/s10052-012-2244-2ISI: 000314407400015Scopus ID: 2-s2.0-84873104381OAI: oai:DiVA.org:kth-119773DiVA: diva2:612309
Funder
EU, European Research CouncilSwedish Research Council
Note

QC 20130321. Author count: 2906

Available from: 2013-03-21 Created: 2013-03-21 Last updated: 2017-12-06Bibliographically approved

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