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arXiv · 2205.12210

Leptoquark-assisted Singlet-mediated Di-Higgs Production at the LHC

Arvind Bhaskar·Debottam Das·Bibhabasu De·Subhadip Mitra·Aruna Kumar Nayak·Cyrin Neeraj
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Abstract

At the LHC, the gluon-initiated processes are considered to be the primary source of di-Higgs production. However, in the presence of a new resonance, the light-quark initiated processes can also contribute significantly. In this paper, we look at the di-Higgs production mediated by a new singlet scalar. The singlet is produced in both quark-antiquark and gluon fusion processes through loops involving a scalar leptoquark and right-handed neutrinos. With benchmark parameters inspired from the recent resonant di-Higgs searches by the ATLAS collaboration, we examine the prospects of such a resonance in the TeV-range at the High-Luminosity LHC (HL-LHC) in the $b\bar{b} \tau^{+}\tau^{-}$ mode with a multivariate analysis. We obtain the $5\sigma$ and $2\sigma$ contours and find that a significant part of the parameter space is within the reach of the HL-LHC.

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Arvind Bhaskar, Debottam Das, Bibhabasu De, Subhadip Mitra, Aruna Kumar Nayak, Cyrin Neeraj. 2022-05-24. Leptoquark-assisted Singlet-mediated Di-Higgs Production at the LHC. https://doi.org/10.1016/j.physletb.2022.137341

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