Search for a very light NMSSM Higgs boson produced in decays of the 125 GeV scalar boson and decaying into $\tau$ leptons in pp collisions at $\sqrt{s} =$ 8 TeV

Khachatryan, Vardan

doi:10.1007/JHEP01(2016)079

Title: Search for a very light NMSSM Higgs boson produced in decays of the 125 GeV scalar boson and decaying into $$\tau$$ leptons in pp collisions at $$\sqrt{s} =$$ 8 TeV

Journal Article · Wed Jan 13 00:00:00 EST 2016 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP01(2016)079· OSTI ID:1226348

Khachatryan, Vardan ^[1]

Yerevan Physics Inst. (YerPhI) (Armenia). et al.

Our search for a very light Higgs boson decaying into a pair of t leptons is presented within the framework of the next-to-minimal supersymmetric standard model. This search is based on a data set corresponding to an integrated luminosity of 19.7 fb^-1 of proton-proton collisions collected by the CMS experiment at a centre-of-mass energy of 8 TeV. The signal is defined by the production of either of the two lightest scalars, h₁ or h₂, via gluon-gluon fusion and subsequent decay into a pair of the lightest Higgs bosons, a₁ or h₁. The h₁ or h₂ boson is identified with the observed state at a mass of 125 GeV. The analysis searches for decays of the a₁ (h₁) states into pairs of t leptons and covers a mass range for the a₁ (h₁) boson of 4 to 8 GeV. Furthermore, the search reveals no significant excess in data above standard model background expectations, and an upper limit is set on the signal production cross section times branching fraction as a function of the a₁ (h₁) boson mass. The 95% confidence level limit ranges from 4.5 pb at ma₁ (mh₁ ) = 8 GeV to 10.3 pb at ma₁ (mh₁ ) = 5 GeV.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: CMS Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1226348

Report Number(s):: FERMILAB-PUB-15-461-CMS; arXiv eprint number arXiv:1510.06534

Journal Information:: Journal of High Energy Physics (Online), Vol. 2016, Issue 079; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 19 works

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