CERN Accelerating science

Article
Report number arXiv:2108.06506 ; IITH-PH-0002/21 ; SI-HEP-2021-22
Title Distinguishing signatures of scalar leptoquarks at hadron and muon colliders
Related titleDistinguishing signatures of scalar leptoquarks at hadron and muon colliders
Author(s) Bandyopadhyay, Priyotosh (Indian Inst. Tech., Hyderabad) ; Karan, Anirban (Indian Inst. Tech., Hyderabad) ; Mandal, Rusa (Siegen U.) ; Parashar, Snehashis (Indian Inst. Tech., Hyderabad)
Publication 2022
Imprint 2021-08-14
Number of pages 41
In: Eur. Phys. J. C 82 (2022) 916
DOI 10.1140/epjc/s10052-022-10809-9 (publication)
Subject category hep-ph ; Particle Physics - Phenomenology
Study IMCC
Abstract While the hunt for new states beyond the standard model (SM) goes on for various well motivated theories, the leptoquarks are among the most appealing scenarios at recent times due to a series of tensions observed in $B$-meson decays. We consider $SU(2)$ singlet and triplet scalar leptoquarks separately, which contribute to charged and neutral current $B$-meson decays. Focusing on the single production of these two scalar leptoquarks, we perform a PYTHIA-based simulation considering all the dominant SM backgrounds at the current and future setups of the Large Hadron Collider (LHC). The mono-$b$-jet + $\ptmiss$ finalstate gives the strongest signal for the singlet leptoquark at the 30 TeV LHC or Future Circular Collider (FCC), with a possibility of $5\sigma$ signal significance with $\gtrsim 1000$\fbi of integrated luminosity, for the chosen benchmark scenarios. The finalstate consisting of a $c$-jet and two $\tau$-jets provides highest reach for the singlet leptoquark, probing an $\mathcal{O}(10^{-1})$ value of the Yukawa-type couplings for up to $3.0$ TeV leptoquark mass. For the triplet leptoquark, $1-{\rm jet}+2\mu + \ptmiss$ topology is the most optimistic signature at the LHC, probing leptoquark couplings to fermions at $\mathcal{O}(10^{-1})$ value for the leptoquark mass range up to $ 4.0$ TeV. The invariant mass edge distribution is found to be instrumental in determination of the leptoquark mass scale at the LHC. We also perform the analysis at the proposed multi-TeV muon collider, where an $\mathcal{O}(10^{-1})$ leptoquark Yukawa coupling can be probed for a $5.0$ TeV leptoquark mass.
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
publication: © 2022-2025 The Author(s) (License: CC-BY-4.0)



Corresponding record in: Inspire


 Element opprettet 2024-03-09, sist endret 2024-03-14


Fulltekst:
Publication - Last ned fulltekstPDF
2108.06506 - Last ned fulltekstPDF