Search for higgs boson pair production in the bbττ final state in proton-proton collisions at (s)=8 TeV

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Bergauer, Thomas and Md. Ali, Mohd. Adli (2017) Search for higgs boson pair production in the bbττ final state in proton-proton collisions at (s)=8 TeV. Physical Review, 96 (7). pp. 1-25. ISSN 2470-0010 E-ISSN 2470-0029

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Abstract

Results are presented from a search for production of Higgs boson pairs (HH) where one boson decays to a pair of b quarks and the other to a τ lepton pair. This work is based on proton-proton collision data collected by the CMS experiment at √ s = 8 TeV, corresponding to an integrated luminosity of 18.3 fb−1 . Resonant and nonresonant modes of HH production have been probed and no significant excess relative to the background-only hypotheses has been found in either mode. Upper limits on cross sections of the two HH production modes have been set. The results have been combined with previously published searches at √ s = 8 TeV, in decay modes to two photons and two b quarks, as well as to four b quarks, which also show no evidence for a signal. Limits from the combination have been set on resonant HH production by an unknown particle X in the mass range mX = 300 GeV to mX = 1000 GeV. For resonant production of spin 0 (spin 2) particles, the observed 95% CL upper limit is 1.13 pb (1.09 pb) at mX = 300 GeV and to 21 fb (18 fb) at mX = 1000 GeV. For nonresonant HH production, a limit of 43 times the rate predicted by the standard model has been set.

Item Type:	Article (Journal)
Additional Information:	7861/63076
Uncontrolled Keywords:	Higgs boson; Pair production; BBT; Proton-proton collisions;
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	12 Nov 2018 10:17
Last Modified:	12 Nov 2018 10:17
URI:	http://irep.iium.edu.my/id/eprint/63076

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