Muon and W-mass in a framework of colored scalars: an LHC perspective

Nabarun Chakrabarty; Indrani Chakraborty; Dilip Kumar Ghosh; Gourab Saha

doi:10.1140/epjc/s10052-023-11971-4

2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2023) 83: 870
https://doi.org/10.1140/epjc/s10052-023-11971-4

Regular Article - Theoretical Physics

Muon $g - 2$ and W-mass in a framework of colored scalars: an LHC perspective

Nabarun Chakrabarty¹^a, Indrani Chakraborty¹^,2, Dilip Kumar Ghosh³ and Gourab Saha⁴

¹ Department of Physics, Indian Institute of Technology Kanpur, 208016, Kanpur, Uttar Pradesh, India
² Department of Physics and Material Science and Engineering, Jaypee Institute of Information Technology, A-10, Sector-62, 201307, Noida, Uttar Pradesh, India
³ School of Physical Sciences, Indian Association for the Cultivation of Science, 2A and 2B, Raja S.C. Mullick Road, Jadavpur, 700032, Kolkata, India
⁴ Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, 700064, Kolkata, India

^a nabarunc@iitk.ac.in

Received: 21 May 2023
Accepted: 25 August 2023
Published online: 27 September 2023

Abstract

A color octet isodoublet can have esoteric origins and it complies with minimal flavour violation. In this study, we take a scenario where the well known Type-X Two-Higgs doublet model is augmented with a color octet isodoublet. We shed light on how such a setup can predict the recently observed value for the W-boson mass. The two-loop Barr-Zee contributions to muon $g - 2$ $$g-2$$ stemming from the colored scalars are evaluated. It is subsequently found that the parameter space compatible with the observed muon $g - 2$ $$g-2$$ gets relaxed w.r.t. what it is in the pure Type-X 2HDM by virtue of the contribution from the colored scalars. The extended parameter region therefore successfully accounts for both the W-mass and muon $g - 2$ $$g-2$$ anomalies simultaneously. Finally, a collider signature leading to a $τ^{+} τ^{-} b \bar{b}$ $\tau ^+ \tau ^- b \overline{b}$ final state is explored at the 14 TeV LHC using both cut-based and multivariate techniques. Such a signal can confirm the existence of both colorless as well colored scalars that are introduced by this framework.

© The Author(s) 2023

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