Projections for HH measurements in the bbZZ(4l) final state with the CMS experiment at the HL-LHC
E. Fontanesi* and L. Borgonovi
Pre-published on:
August 18, 2019
Published on:
December 04, 2019
Abstract
Prospects for the study of Higgs boson pair (HH) production in the $\mathrm{HH \to b\bar{b}4l}$ (l = e, $\mu$) channel are studied in the context of the High Luminosity LHC. The analysis is performed using a parametric simulation of the Phase-2 CMS detector response provided by the Delphes software and assuming an average of 200 proton-proton collisions per bunch crossing at a center-of-mass energy of 14 TeV. Assuming a projected integrated luminosity of 3000 fb$^{-1}$, the expected significance for the nonresonant standard model (SM) HH signal is 0.37 $\sigma$; a 95$\%$ confidence level (CL) upper limit on its cross section is set to 6.6 times the SM prediction. The statistical combination of five decay channels ($\mathrm{b\bar{b}b\bar{b}}$, $\mathrm{b\bar{b}\tau\tau}$, $\mathrm{b\bar{b}\gamma\gamma}$, $\mathrm{b\bar{b}WW}$, $\mathrm{b\bar{b}ZZ}$) results in an expected significance for the SM HH signal of 2.6 $\sigma$ and an expected 68$\%$ and 95$\%$ CL intervals for the self-coupling modifier $\kappa_{\lambda}$ = $\lambda_{HHH}/\lambda_{HHH}^{SM}$ of [$0.35, 1.9$] and [$-0.18, 3.6$], respectively.
DOI: https://doi.org/10.22323/1.350.0038
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.