Search for heavy resonances decaying into two Higgs bosons or into a Higgs boson and a W or Z boson in proton-proton collisions at 13 TeV
A search is presented for massive narrow resonances decaying either into two Higgs bosons, or into a Higgs boson and a W or Z boson. The decay channels considered are HH → bb¯τ +τ − and VH → q¯qτ +τ −, where H denotes the Higgs boson, and V denotes the W or Z boson. This analysis is based on...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Springer Verlag
2019
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/71626/ http://irep.iium.edu.my/71626/ http://irep.iium.edu.my/71626/ http://irep.iium.edu.my/71626/1/71626_Search%20for%20heavy%20resonances%20decaying_article.pdf http://irep.iium.edu.my/71626/2/71626_Search%20for%20heavy%20resonances%20decaying_wos.pdf http://irep.iium.edu.my/71626/3/71626_Search%20for%20heavy%20resonances%20decaying_scopus.pdf |
| Summary: | A search is presented for massive narrow resonances decaying either into two
Higgs bosons, or into a Higgs boson and a W or Z boson. The decay channels considered
are HH → bb¯τ
+τ
− and VH → q¯qτ
+τ
−, where H denotes the Higgs boson, and V denotes
the W or Z boson. This analysis is based on a data sample of proton-proton collisions
collected at a center-of-mass energy of 13 TeV by the CMS Collaboration, corresponding
to an integrated luminosity of 35.9 fb−1
. For the TeV-scale mass resonances considered,
substructure techniques provide ways to differentiate among the hadronization products
from vector boson decays to quarks, Higgs boson decays to bottom quarks, and quark- or
gluon-induced jets. Reconstruction techniques are used that have been specifically optimized to select events in which the tau lepton pair is highly boosted. The observed data
are consistent with standard model expectations and upper limits are set at 95% confidence
level on the product of cross section and branching fraction for resonance masses between
0.9 and 4.0 TeV. Exclusion limits are set in the context of bulk radion and graviton models:
spin-0 radion resonances are excluded below a mass of 2.7 TeV at 95% confidence level. In
the spin-1 heavy vector triplet framework, mass-degenerate W0 and Z0
resonances with
dominant couplings to the standard model gauge bosons are excluded below a mass of
2.8 TeV at 95% confidence level. These are the first limits for massive resonances at the
TeV scale with these decay channels at √
s = 13 TeV. |
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