Revisiting scalar leptoquark at the LHC

Abstract

We investigate the Standard Model (SM) extended with a colored charged scalar, leptoquark, having fractional electromagnetic charge $-1/3$. We mostly focus on the decays of the leptoquark into second and third generations via $c\mu ,t\tau$ decay modes. We perform a PYTHIA-based simulation considering all the dominant SM backgrounds at the LHC with 14\,TeV center of mass energy. Limits have been calculated for the leptoquark mass that can be probed at the LHC with an integrated luminosity of 3000 fb${}^{-1}$. The leptoquark mass, reconstructed from its decay products into the third generation, has the maximum reach. However, the $\mu +c$ channel, comprising a very hard muon and $c$-jet produces a much cleaner mass peak. Single leptoquark production in association with a $\mu$ or $\nu$ provides some unique signatures that can also be probed at the LHC.

Version updated with latest data and accepted in EPJC

References in corpus (6)

• Physics of leptoquarks in precision experiments and at particle colliders
• The Leptoquark Hunter's Guide: Pair Production
• Cornering Scalar Leptoquarks at LHC
• LHC constraints and prospects for $S_1$ scalar leptoquark explaining the $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$ anomaly
• Searching for third-generation composite leptoquarks at the LHC
• Vacuum stability in an extended standard model with a leptoquark

Cited by in corpus (34)

• $R_{D^{(\ast )}}$ motivated ${\mathcal{S}}_1$ leptoquark scenarios: Impact of interference on the exclusion limits from LHC data
• Combined explanations of $(g-2{)}_{\mu }$, $R_{D^{(\ast )}}$, $R_{K^{(\ast )}}$ anomalies in a two-loop radiative neutrino mass model
• Searching for Leptoquarks at Future Muon Colliders
• Addressing the ${\mathbf{R}}_{D^{(\ast )}}$ anomalies with an ${\mathbf{S}}_1$ leptoquark from $\mathbf{SO}(10)$ grand unification
• Combined Constraints on First Generation Leptoquarks
• Scalar Leptoquarks in Leptonic Processes
• Hunting scalar leptoquarks with boosted tops and light leptons
• Enhancing Scalar Productions with Leptoquarks at the LHC
• Precise limits on the charge-$2/3$ $U_1$ vector leptoquark
• Leptoquarks in Oblique Corrections and Higgs Signal Strength: Status and Prospects
• Complete Lagrangian and Set of Feynman Rules for Scalar Leptoquarks
• Constraining flavour patterns of scalar leptoquarks in the effective field theory
• Distinguishing signatures of scalar leptoquarks at hadron and muon colliders
• Characters and Group Invariant Polynomials of (Super)fields: Road to "Lagrangian"
• Improving third-generation leptoquark searches with combined signals and boosted top
• Boosting vector leptoquark searches with boosted tops
• Collider signature of $U_1$ Leptoquark and constraints from $b\to c$ observables
• Phenomenology of Scalar Leptoquarks at the LHC in Explaining the Radiative Neutrino Mass, Muon $g-2$ and Lepton Flavour Violating Observables
• Searching for heavy leptoquarks at a muon collider
• Effective Operator Bases for Beyond Standard Model Scenarios: An EFT compendium for discoveries
• A unified explanation of $b\to s{\mu }^{+}{\mu }^{-}$ anomalies, neutrino masses and $B\to \pi K$ puzzle
• Simplified leptoquark models for precision $l_i\to l_f\gamma$ experiments: two-loop structure of $O({\alpha }_S{Y}^2)$ corrections
• Leptoquark-assisted Singlet-mediated Di-Higgs Production at the LHC
• Phenomenology of TeV-scale scalar Leptoquarks in the EFT
• A comparative study of the $S_1$ and $U_1$ leptoquark effects in the light quark regime
• Distinguishing Leptoquarks at the LHC/FCC
• Fresh look at the LHC limits on scalar leptoquarks
• Right-handed neutrino pair production via second-generation leptoquarks
• Constraints on leptoquarks from lepton-flavour-violating tau-lepton processes
• Addendum to: Combined Constraints on First Generation Leptoquarks
• Next-to-Leading-Order QCD Matching for $\Delta F=2$ Processes in Scalar Leptoquark Models
• Scalar leptoquark effects on $B\to \mu \bar{\nu }$ decay
• Investigating the Production of Leptoquarks by Means of Zeros of Amplitude at Photon Electron Collider
• Constraining Scalar Doublet and Triplet Leptoquarks with Vacuum Stability and Perturbativity