Inclusive search for boosted Higgs bosons using H$ \rightarrow \mathrm{b\overline{b}}$ decays with the CMS experiment

TL;DR

This paper reports the first search for high transverse momentum Higgs bosons decaying to bottom quark pairs using CMS data, employing jet substructure techniques to identify boosted Higgs decays.

Contribution

It introduces a novel method for detecting boosted Higgs bosons in the bar{b} decay channel using jet substructure and b tagging in CMS data.

Findings

First observation of Z→bar{b} in single-jet topology

Validated jet substructure techniques for Higgs search

Demonstrated feasibility of boosted Higgs detection at LHC

Abstract

We present the first search for the standard model Higgs boson (H) produced with large transverse momentum ($\mathrm{p_{T}}$) via gluon fusion and decaying to a bottom quark-antiquark pair ($\mathrm{b\overline{b}}$). The search is performed using a data set of pp collisions at $\sqrt{s}=13$ TeV collected with the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 fb$^{\mathrm{-1}}$. A highly Lorentz-boosted Higgs boson decaying to $\mathrm{b\overline{b}}$ is reconstructed as a single, large radius jet and is identified using jet substructure and dedicated b tagging techniques. The method is validated with the first observation of the Z$\rightarrow\mathrm{b\overline{b}}$ process in the single-jet topology, with a local significance of 5.1 standard deviations (5.8 expected).