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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/130277
Title: 
Searches for heavy Higgs bosons in two-Higgs-doublet models and for t→ch decay using multilepton and diphoton final states in pp collisions at 8 TeV
Author(s): 
Institution: 
  • Yerevan Phys Inst
  • Inst Hochenergiephys OeAW
  • Natl Ctr Particle &High Energy Phys
  • Univ Antwerp
  • Vrije Univ Brussel
  • Univ Libre Bruxelles
  • Univ Ghent
  • Catholic Univ Louvain
  • Univ Mons
  • Ctr Brasileiro Pesquisas Fis
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • Universidade Federal do ABC (UFABC)
  • Bulgarian Acad Sci
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  • Inst High Energy Phys
  • Peking Univ
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  • Univ Split
  • Rudjer Boskovic Inst
  • Univ Cyprus
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  • Acad Sci Res &Technol Arab Republ Egypt
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  • Helsinki Inst Phys
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  • Tbilisi State Univ
  • Rhein Westfal TH Aachen
  • Deutsches Elektronen Synchrotron
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  • Wigner Res Ctr Phys
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  • Saha Inst Nucl Phys
  • Bhabha Atom Res Ctr
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  • Lab Instrumentacao &Fis Expt Particulas
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  • Petersburg Nucl Phys Inst
  • Russian Acad Sci
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  • Moscow MV Lomonosov State Univ
  • State Res Ctr Russian Federat
  • Univ Belgrade
  • Vinca Inst Nucl Sci
  • Ctr Invest Energet Medioambient &Tecnol CIEMAT
  • Univ Autonoma Madrid
  • Univ Oviedo
  • Univ Cantabria
  • CERN
  • Paul Scherrer Inst
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  • Cukurova Univ
  • Middle E Tech Univ
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  • Kharkov Inst Phys &Technol
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  • Isfahan Univ Technol
  • Sharif Univ Technol
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  • Cag Univ
  • Mersin Univ
  • Izmir Inst Technol
  • Ozyegin Univ
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  • Univ Southampton
  • Argonne Natl Lab
  • Erzincan Univ
  • Yildiz Tekn Univ
ISSN: 
1550-7998
Abstract: 
Searches are presented for heavy scalar (H) and pseudoscalar (A) Higgs bosons posited in the two doublet model (2HDM) extensions of the standard model (SM). These searches are based on a data sample of pp collisions collected with the CMS experiment at the LHC at a center-of-mass energy of root s = 8 TeV and corresponding to an integrated luminosity of 19.5 fb(-1). The decays H -> hh and A -> Zh, where h denotes an SM-like Higgs boson, lead to events with three or more isolated charged leptons or with a photon pair accompanied by one or more isolated leptons. The search results are presented in terms of the H and A production cross sections times branching fractions and are further interpreted in terms of 2HDM parameters. We place 95% C.L. cross section upper limits of approximately 7 pb on sigma B for H -> hh and 2 pb for A -> Zh. Also presented are the results of a search for the rare decay of the top quark that results in a charm quark and an SM Higgs boson, t -> ch, the existence of which would indicate a nonzero flavor-changing Yukawa coupling of the top quark to the Higgs boson. We place a 95% C.L. upper limit of 0.56% on B(t -> ch).
Issue Date: 
23-Dec-2014
Citation: 
Physical Review D. College Pk: Amer Physical Soc, v. 90, n. 11, p. 1-23, 2014.
Time Duration: 
1-23
Publisher: 
Amer Physical Soc
Source: 
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.112013
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/130277
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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