Probing flavor constrained SMEFT operators through $tc$ production at the Muon collider

Abstract

We investigate flavour violating four Fermi Standard Model Effective Field Theory (SMEFT) operators of dimension-six that can be probed via $tc(\bar{t}c+t\bar{c})$ production at the multi-TeV muon collider. We study different FCNC and FCCC processes related to $B$, $B_s$, $K$ and $D$ decays and mixings, sensitive to these operators and constrain the corresponding couplings. The tensor operator turns out to be most tightly bound. We perform event simulation of the final state signal from $tc$ production together with the SM background to show that operators after flavour constraint can reach the discovery limit at 10 TeV muon collider. We further adopt the optimal observable technique (OOT) to determine the optimal statistical sensitivity of the Wilson coefficients and compare them with the flavour constraints. We use the limits to predict the observational sensitivities of the rare processes like $K_L\to {\pi }_0\ell \ell$, $D_0\to \mu \mu$, $t\to c\ell \ell$.

38 pages, 12 figures, and 9 tables; flavor indices are added to WCs, a new section (Section 6) is added, few figures are modified; Accepted for publication in JHEP

References in corpus (20)

• 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
• FeynRules - Feynman rules made easy
• FLAG Review 2021
• Extending the Standard Model Effective Field Theory with the Complete Set of Dimension-7 Operators
• Measuring the Higgs-Vector boson Couplings at Linear $e^{+}{e}^{-}$ Collider
• More Synergies from Beauty, Top, $Z$ and Drell-Yan Measurements in SMEFT
• Anatomy of kaon decays and prospects for lepton flavour universality violation
• Model-independent analysis of $b\to d$ processes
• Probing anomalous $ZZ\gamma$ and $Z\gamma \gamma$ Couplings at the $e^{+}{e}^{-}$ Colliders using Optimal Observable Technique
• Discriminating $B\to D^{\ast }\ell \nu$ form factors via polarization observables and asymmetries
• Search for new physics via single top production at TeV energy $e\gamma$ colliders
• Probing heavy charged fermions at $e^{+}{e}^{-}$ collider using the Optimal Observable Technique
• Optimal estimation of Dimension-8 Neutral Triple Gauge Couplings at $e^{+}{e}^{-}$ Colliders
• New physics in $s\to d$ semileptonic transitions: rare hyperon vs. kaon decays
• UV physics from IR features: new prospects from top flavor violation
• Constraining rare B decays by ${\mu }^{+}{\mu }^{-}\to tc$ at future lepton colliders
• Optimal determination of New Physics couplings: A comparative study
• Resonant Electric Probe to Axionic Dark Matter
• SMEFT analysis of charged lepton flavor violating $B$-meson decays

Cited by in corpus (10)

• EW corrections and Heavy Boson Radiation at a high-energy muon collider
• Exploring Optimal Sensitivity of Lepton Flavor Violating Effective Couplings at the $e^{+}{e}^{-}$ Colliders
• Muon collider probes of Majorana neutrino dipole moments and masses
• Collider-Flavour Complementarity from the bottom to the top
• Machine Learning Approaches to Top Quark Flavor-Changing Four-Fermion Interactions in Trilepton Signals at the LHC
• Lepton Flavor Violation: From Muon Decays to Muon Colliders
• Optimal sensitivity of anomalous charged triple gauge couplings through $W$ boson helicity at the $e^{+}{e}^{-}$ colliders
• Up-type FCNC in presence of Dark Matter
• Optimal New Physics estimation in presence of Standard Model backgrounds
• Probing Higgs and Top Interactions through the Muon Lens at multi-TeV Muon Colliders