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Title: Search for massive WH resonances decaying into the $$\ell \nu \mathrm{b} \overline{\mathrm{b}} $$ final state at $$\sqrt{s}=8$$ $$~\text {TeV}$$

In this study, a search for a massive resonance $${\mathrm{W}^{\prime }}$$ decaying into a W and a Higgs boson in the $$\ell \nu \mathrm{b} \overline{\mathrm{b}} $$ ( $$\ell = \mathrm {e}$$ , $$\mu $$ ) final state is presented. Results are based on data corresponding to an integrated luminosity of 19.7 $$\,\text {fb}^{{-1}}$$ of proton–proton collisions at $$\sqrt{s}=8$$ $$~\text {TeV}$$ , collected using the CMS detector at the LHC. For a high-mass ( $$\gtrsim $$ 1 $$~\text {TeV}$$ ) resonance, the two bottom quarks coming from the Higgs boson decay are reconstructed as a single jet, which can be tagged by placing requirements on its substructure and flavour. Exclusion limits at 95 % confidence level are set on the production cross section of a narrow resonance decaying into WH, as a function of its mass. In the context of a little Higgs model, a lower limit on the $${\mathrm{W}^{\prime }}$$ mass of 1.4 $$~\text {TeV}$$ is set. In a heavy vector triplet model that mimics the properties of composite Higgs models, a lower limit on the $${\mathrm{W}^{\prime }}$$ mass of 1.5 $$~\text {TeV}$$ is set. In the context of this model, the results are combined with related searches to obtain a lower limit on the $${\mathrm{W}^{\prime }}$$ mass of 1.8 $$~\text {TeV}$$ , the most restrictive to date for decays to a pair of standard model bosons.
Authors:
 [1]
  1. Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.
Publication Date:
OSTI Identifier:
1253578
Report Number(s):
FERMILAB-PUB--16-023-CMS; CMS-EXO--14-010; CERN-PH--2015-332; CERN-PH-EP--2015-332; arXiv:1601.06431
Journal ID: ISSN 1434-6044; 1416821
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 76; Journal Issue: 5; Journal ID: ISSN 1434-6044
Publisher:
Springer
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CMS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS