Probing non-standard $b\bar{b}h$ interaction at the LHC at $\sqrt{s}=13$ TeV

Abstract

In the detailed probe of Higgs boson properties at the Large Hadron Collider, and in looking for new physics signatures in the electroweak symmetry breaking sector, the bottom quark Yukawa coupling has a crucial role. We investigate possible departure from the standard model value of $b\bar{b}h$ coupling, phenomenologically expressed in terms of a modification factor ${\alpha }_b$, in $b\bar{b}$-associated production of the $125$-GeV scalar at the high-luminosity LHC. In a next-to-leading order estimate, we make use of a gradient boosting algorithm to improve in statistical significance upon a cut-based analysis. It is found possible to probe down to ${\alpha }_b=3$ with more than $5\sigma$ significance, with $\mathcal{L}=3000$ fb${}^{-1}$ and $\sqrt{s}$ = 13 TeV, while the achievable limit at $95\%$ C.L. is $\pm 1.95$.

arXiv comment13 pages, 5 figures, 3 tables

References in corpus (31)

• XGBoost: A Scalable Tree Boosting System
• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Parton distributions for the LHC
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• Parton distributions for the LHC Run II
• Combined measurements of Higgs boson production and decay using up to $80$ fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=$ 13 TeV collected with the ATLAS experiment
• Higgs Radiation off Top Quarks at the Tevatron and the LHC
• Higgs boson production in bottom quark fusion at next-to-next-to-leading order
• Observation of Higgs boson decay to bottom quarks
• Higgs Radiation off Bottom Quarks at the Tevatron and the LHC
• Exclusive Higgs Boson Production with bottom quarks at Hadron Colliders
• Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques
• Higgs production in association with bottom quarks
• Higgs production in bottom-quark fusion in a matched scheme
• Higgs production in bottom-quark fusion to third order in the strong coupling
• Probing Higgs Bosons with Large Bottom Yukawa Coupling at Hadron Colliders
• Higgs Production in Association with Bottom Quarks at Hadron Colliders
• Measurement and interpretation of differential cross sections for Higgs boson production at $\sqrt{s}=$ 13 TeV
• Higgs production in bottom quark fusion: Matching the 4- and 5-flavour schemes to third order in the strong coupling
• Higgs Boson Production in Association with Bottom Quarks
• Measuring the Higgs-bottom coupling in weak boson fusion
• Higgs boson production in association with b jets in the POWHEG BOX
• RIP $Hb\bar{b}$: How other Higgs production modes conspire to kill a rare signal at the LHC
• Top-Yukawa contributions to bbH production at the LHC
• Determining the space-time structure of bottom-quark couplings to spin-zero particles
• Anomalous Top and Bottom Yukawa Couplings and LHC Run 1 Data
• Higgs production in association with bottom quark pair at LHC
• Exploring anomalous $hb\bar{b}$ and $hb\bar{b}\gamma$ couplings in the context of the LHC and an $e^{+}{e}^{-}$ collider

Cited by in corpus (5)

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• Broad toplike vector quarks at LHC and HL-LHC
• Searching exotic Higgs bosons at the LHC
• Prospect study for measurement of $Hb\bar{b}$ coupling at the LHC and FCC-hh