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
Name
PhysRevD.90.112013.pdf
Size
817.46 KB
Format
Adobe PDF
Checksum (MD5)
1e8225b30f90c56b52f4676d2446eb29
Author(s)
Khachatryan, V.
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Bergauer, T.
Dragicevic, M.
Erö, J.
Fabjan, C.
Friedl, M.
Frühwirth, R.
Date Issued
December 2014
Journal
Physical Review D
Publisher
American Physical Society
Citation
Khachatryan, V., et al. "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." Phys. Rev. D 90, 112013 (December 2014). © 2014 CERN, for the CMS Collaboration
Version
Final published version
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 √s = 8 TeV and corresponding to an integrated luminosity of 19.5 fb[superscript −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 σB 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).
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. School of Science
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.90.112013
