Abstract
A search for heavy resonances, decaying into the standard model vector bosons and the standard model Higgs boson, is presented. The final states considered contain a b quark-antiquark pair from the decay of the Higgs boson, along with electrons and muons and missing transverse momentum, due to undetected neutrinos, from the decay of the vector bosons. The mass spectra are used to search for a localized excess consistent with a resonant particle. The data sample corresponds to an integrated luminosity of 35.9 fb−1 collected in 2016 by the CMS experiment at the CERN LHC from proton-proton collisions at a center-of-mass energy of 13 TeV. The data are found to be consistent with background expectations. Exclusion limits are set in the context of spin-0 two Higgs doublet models, some of which include the presence of dark matter. In the spin-1 heavy vector triplet framework, mass-degenerate W′ and Z′ resonances with dominant couplings to the standard model gauge bosons are excluded below a mass of 2.9 TeV at 95% confidence level.
Highlights
Background estimationA signal would produce a narrow peak above a smoothly falling background in the distribution of the kinematic variables mVh or mTVh
This paper describes a search for heavy resonances, denoted as X, decaying into an SM Higgs boson and a vector boson (W or Z)
The uncertainties in the signal cross section are not profiled in the fit when presenting the results as upper limits on the cross sections as a function of mX, or as a function of mZ and mA in the Z -2HDM model, and are included in the uncertainty band of the theoretical cross section line
Summary
A detailed description of the CMS detector, together with a definition of the coordinate system used and the relevant kinematic variables, can be found in ref. [34]. Within the solenoid volume are a silicon pixel and strip tracker, a lead tungstate crystal electromagnetic calorimeter (ECAL), and a brass and scintillator hadron calorimeter (HCAL), each composed of a barrel and two endcap. Forward calorimeters extend the pseudorapidity (η) coverage provided by the barrel and endcap detectors. The silicon tracker measures charged particles with |η| < 2.5. It consists of 1440 silicon pixel and 15 148 silicon strip detector modules. The ECAL provides coverage up to |η| < 3.0, and the energy resolution for unconverted or late-converting electrons and photons in the barrel section is about 1% for particles that have energies in the range of tens of GeV. The high-level trigger (HLT) processor farm decreases the event rate from around 100 kHz to about 1 kHz, before data storage
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
