Rare top quark and Higgs boson decays in Alternative Left-Right Symmetric Models

Abstract

Top quark and Higgs boson decays induced by flavor-changing neutra currents (FCNC) are very much suppressed in the Standard Model (SM). Their detection in colliders like the Large Hadron Collider (LHC), Next Linear Collider (NLC) or Tevatron would be a signal of new physics. We evaluate the FCNC decays t \to H^0 + c, t \to Z + c, and H^0 \to t + {\bar c} in the context of Alternative Left-Right symmetric Models (ALRM) with extra isosinglet heavy fermions; in this case, FCNC decays occurs at tree-level and they are only suppressed by the mixing between ordinary top and charm quarks, which is poorly constraint by current experimental values. This provides the possibility for future colliders, either to detect new physics, or to improve present bounds on the parameters of the model.

15 pages, 2 figures. Change in title to fit with version published in Phys. Rev. D

References in corpus (29)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• A Precision Measurement of the Mass of the Top Quark
• A new evaluation of the t->cH decay width in the standard model
• Effects of mixing with quark singlets
• Lepton Flavour Violating Decays of Supersymmetric Higgs Bosons
• Top-Quark Decay Via Flavor-Changing Neutral Currents at Hadron Colliders
• Loop Induced Flavor Changing Neutral Decays of the Top Quark in a General Two-Higgs-Doublet Model
• Probing top flavour-changing neutral scalar couplings at the CERN LHC
• Rare top decays t -> c gamma, t -> c g and CKM unitarity
• Top-Quark Decay Via the Anomalous Coupling $\bar{t}c\gamma$ at Hadron Colliders
• Search for Single Top Quark Production at LEP2
• Soft Supersymmetry Breaking, Scalar Top-Charm Mixing and Higgs Signatures
• SUSY-Induced Top Quark FCNC Processes at Linear Colliders
• Higgs boson couplings to quarks with supersymmetric CP and flavor violations
• Search for Long-lived Charged Massive Particles in anti-p p Collisions at s**1/2 = 1.8 TeV
• Ubiquitous CP violation in a top-inspired left-right model
• Probing Topcolor-Assisted Technicolor from Top-Charm Associated Production at LHC
• Multilepton production via top flavour-changing neutral couplings at the CERN LHC
• Flavour Changing Neutral Higgs Boson Decays from Squark - Gluino Loops
• Zt and γt production via top flavour-changing neutral couplings at the Fermilab Tevatron
• Higgs Boson Flavor-Changing Neutral Decays into Top Quark in a General Two-Higgs-Doublet Model
• Testing flavor-changing neutral currents in the rare decays t->cViVj
• Effective Lagrangian approach to Higgs-mediated FCNC top quark decays
• The Rare Top Decays $t\to b{W}^{+}Z$ and $t\to c{W}^{+}{W}^{-}$
• The flavor-changing rare top decays $t\to cVV$ in topcolor-assisted technicolor theory
• New Higgs signals induced by mirror fermion mixing effects
• Constraints on Z1-Z2 Mixing from the Decay $Z1\to e-e+$ in the left-right Symmetric Model
• Constraints on the parameters of the Left Right Mirror Model
• Testing models with non-minimal Higgs sector through the decay t->q+WZ

Cited by in corpus (18)

• SUSY-induced FCNC top-quark processes at the Large Hadron Collider
• New Physics effects in the flavor-changing neutral couplings of the Top quark
• Constraints on top quark FCNC from electroweak precision measurements
• R-parity violating effects in top quark FCNC productions at LHC
• Lepton Flavour Violating top decays at the LHC
• Rare top quark decay t --> u_1 \bar{u}_2 u_2 in the standard model
• Probing Anomalous FCNC Top-Higgs Yukawa Couplings at the Large Hadron Electron Collider
• Higgs mediated flavor violating top quark decays t --> u_i H, u_i gamma, u_i gamma gamma, and the process gamma gamma --> t c in effective theories
• Signatures of NP models in top FCNC decay t --> c(u) l+ l-
• $t\to cg$ and $t\to cZ$ in Universal Extra Dimensional Models
• Exploring the Anomalous Top-Higgs FCNC Couplings at the electron proton colliders
• Flavour-changing neutral scalar interactions of the top quark
• Flavour-changing top quark decays in the alternative left-right model
• Top Rare Decays t-> cV in the Mirror Twin Higgs Models
• Implications of $D^0-\overline{D^0}$ on the rare top quark decays $t\to u\gamma$ and $t\to ug$
• Neutrino masses and mixing parameters in a left-right model with mirror fermions
• Neutrino mixing and masses in a left-right model with mirror fermions
• Heavy quarkonium production through the top quark rare decays via the channels involving flavor changing neutral currents