Search for heavy resonances decaying into two Higgs bosons or into a Higgs and a vector boson in proton-proton collisions at 13 TeV

CMS Physics Analysis Summaries
Report number	CMS-PAS-B2G-17-006
Title	Search for heavy resonances decaying into two Higgs bosons or into a Higgs and a vector boson in proton-proton collisions at 13 TeV
Corporate author(s)	CMS Collaboration
Collaboration	CMS Collaboration
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	A search is presented for massive resonances decaying either into two Higgs (H) bosons or into a Higgs and a vector (V = W or Z) boson. The decay channels considered are $\mathrm{VH} \rightarrow q\bar{q}\tau^{+}\tau^{-}$ and $\mathrm{HH} \rightarrow b\bar{b}\tau^{+}\tau^{-}$. This analysis is based on the data sample of proton-proton collisions collected at a center-of-mass energy of $13~\mathrm{TeV}$ by the CMS Collaboration in $2016$, corresponding to an integrated luminosity of $35.9~\mathrm{fb}^{-1}$. For the high-mass resonances considered ($\gtrsim 1~\mathrm{TeV}$), substructure techniques are employed to differentiate between the hadronization products of a vector boson decaying to quarks, a Higgs boson decaying to bottom quarks, and quark- or gluon-induced jets. Due to the large boost of the Higgs boson, the two leptons in the $H \rightarrow \tau^{+}\tau^{-}$ decay are collimated. Advanced techniques are used for events in which one $\tau$ lepton decays hadronically and the other leptonically, and in which both decay hadronically. Upper limits at $95\%$ confidence level are set on the product of cross section times branching fraction for resonance masses between $900$ and $4000~\mathrm{GeV}$, ranging from $100$ to $6~\mathrm{fb}$ for spin $0$ and $2$ resonances, and from $250$ to $6~\mathrm{fb}$ for spin $1$ resonances.
Other source	Inspire
Related	superseded by: CERN-EP-2018-182
Email contact: [email protected] Fulltext in PDF Figure_003-a Figure_003-c Figure_003-b Figure_003-e Figure_003-d Figure_003-f Figure_004-f Figure_004-d Figure_004-e Figure_004-b Figure_004-c Figure_004-a Figure_005-b Figure_005-a Figure_007-a Figure_007-b Figure_006-a Figure_006-b Figure_002-a Figure_002-b Figure_001-b Figure_001-a Additional information for the analysis (restricted access)