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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:
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; AC02-05CH11231
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 Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CMS Collaboration; The CMS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1253578
Alternate Identifier(s):
OSTI ID: 1411631

Khachatryan, Vardan. Search for massive WH resonances decaying into the $\ell \nu \mathrm{b} \overline{\mathrm{b}} $ final state at $\sqrt{s}=8$ $~\text {TeV}$. United States: N. p., Web. doi:10.1140/epjc/s10052-016-4067-z.
Khachatryan, Vardan. Search for massive WH resonances decaying into the $\ell \nu \mathrm{b} \overline{\mathrm{b}} $ final state at $\sqrt{s}=8$ $~\text {TeV}$. United States. doi:10.1140/epjc/s10052-016-4067-z.
Khachatryan, Vardan. 2016. "Search for massive WH resonances decaying into the $\ell \nu \mathrm{b} \overline{\mathrm{b}} $ final state at $\sqrt{s}=8$ $~\text {TeV}$". United States. doi:10.1140/epjc/s10052-016-4067-z. https://www.osti.gov/servlets/purl/1253578.
@article{osti_1253578,
title = {Search for massive WH resonances decaying into the $\ell \nu \mathrm{b} \overline{\mathrm{b}} $ final state at $\sqrt{s}=8$ $~\text {TeV}$},
author = {Khachatryan, Vardan},
abstractNote = {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.},
doi = {10.1140/epjc/s10052-016-4067-z},
journal = {European Physical Journal. C, Particles and Fields},
number = 5,
volume = 76,
place = {United States},
year = {2016},
month = {4}
}