Color Octet Scalar Production at the LHC

Abstract

New physics at the weak scale that can couple to quarks typically gives rise to unacceptably large flavor changing neutral currents. An attractive way to avoid this problem is to impose the principal of minimal flavor violation (MFV). Recently it was noted that in MFV only scalars with the same gauge quantum numbers as the standard model Higgs doublet or color octet scalars with the same weak quantum numbers as the Higgs doublet can couple to quarks. In this paper we compute the one-loop rate for production of a single color octet scalar through gluon fusion at the LHC, which can become greater than the tree level pair production rate for octet scalar masses around a TeV. We also calculate the precision electroweak constraint from Z decays to a b and anti-b quark; this constraint on color octet mass and Yukawa coupling affects the allowed range for single octet scalar production through gluon fusion.

15 pages, 5 figures

References in corpus (17)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Minimal Flavour Violation: an effective field theory approach
• Next-to-Next-to-Leading Order Higgs Production at Hadron Colliders
• Higgs boson production at hadron colliders in NNLO QCD
• HIGGS BOSON PRODUCTION AT THE LHC
• NNLO corrections to the total cross section for Higgs boson production in hadron-hadron collisions
• Soft-gluon resummation for Higgs boson production at hadron colliders
• Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC
• Higgs production with large transverse momentum in hadronic collisions at next-to-leading order
• The q_T spectrum of the Higgs boson at the LHC in QCD perturbation theory
• Prompt neutrinos from atmospheric c-cbar and b-bbar production and the gluon at very small x
• Flavor Changing Neutral Currents, an Extended Scalar Sector, and the Higgs Production Rate at the LHC
• Next-to-leading order QCD corrections to differential distributions of Higgs boson production in hadron-hadron collisions
• Next-to-leading Corrections to the Higgs Boson Transverse Momentum Spectrum in Gluon Fusion
• Modifications to the Properties of the Higgs Boson
• Rare t-quark decays $t\to c{l}_j^{+}{l}_k^{-}$, $t\to c\widetilde{{\nu }_j}{\nu }_k$ in the minimal four color symmetry model

Cited by in corpus (62)

• Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC
• Top pair invariant mass distribution: a window on new physics
• Gauge Theory for Baryon and Lepton Numbers with Leptoquarks
• Seeking Sgluons
• Physics searches at the LHC
• Fermion Triplet Dark Matter and Radiative Neutrino Mass
• Light colored scalars from grand unification and the forward-backward asymmetry in top quark pair production
• Color-octet scalars at the LHC
• Color-Octet Scalars of N=2 Supersymmetry at the LHC
• Heavy octets and Tevatron signals with three or four b jets
• On the Origin of Neutrino Masses
• Color Sextet Scalars at the CERN Large Hadron Collider
• Sgluon Pair Production to Next-to-Leading Order
• Minimal Matter at the Large Hadron Collider
• Light color octet scalars in the minimal SO(10) grand unification
• Proton Stability, Dark Matter and Light Color Octet Scalars in Adjoint SU(5) Unification
• Higgs Underproduction at the LHC
• Grand Unification and Light Color-Octet Scalars at the LHC
• Light Octet Scalars, a Heavy Higgs and Minimal Flavour Violation
• QCD Corrections in two-Higgs-doublet extensions of the Standard Model with Minimal Flavor Violation
• Renormalizable SU(5) Unification
• Higgs Uncovering Light Scalar Remnants of High Scale Matter Unification
• Interpretation of 750 GeV Diphoton Excess at LHC in Singlet Extension of Color-octet Neutrino Mass Model
• Color-Octet-Electroweak-Doublet Scalars and the CDF Dijet Anomaly
• Factorization and resummation for single color-octet scalar production at the LHC
• Color octet scalars and high pT four-jet events at LHC
• Chiral color symmetry and possible $G^{\prime }$-boson effects at the Tevatron and LHC
• Constraints on the Scalar Sector of the Renormalizable Coloron Model
• Weak-triplet, color-octet scalars and the CDF dijet excess
• LHC constraints on color octet scalars
• Color Octet Scalar Bound States at the LHC
• Collider phenomenology of a unified leptoquark model
• Suppressed FCNC in New Physics with Shared Flavor Symmetry
• A new signature for color octet pseudoscalars at the LHC
• Color & Weak triplet scalars, the dimuon asymmetry in $B_s$ decay, the top forward-backward asymmetry, and the CDF dijet excess
• Exclusive radiative B-meson decays within minimal flavour violating 2HDMs
• LHC bounds on coloured scalars
• Electroweak phase transition in an extension of the Standard Model with scalar color octet
• Interplay between new physics in one-loop Higgs couplings and the top-quark Yukawa coupling
• New theoretical constraints on scalar color octet models
• Same-Sign Dileptons from Colored Scalars in the Flavorful Top-Coloron Model
• Initial determination of the spins of the gluino and squarks at LHC
• Two Higgs doublet models augmented by a scalar color octet
• $B_{s,d}-{\bar{B}}_{s,d}$ mixings and $B_{s,d}\to {\ell }^{+}{\ell }^{-}$ decays within the Manohar-Wise model
• Colored scalar particles production in $pp$-collisions and possible mass limits for scalar gluons from future LHC data
• Top and bottom tensor couplings from a color octet scalar
• Color-octet scalar decays to a gluon and an electroweak gauge boson in the Manohar-Wise model
• Constraints on coloured scalars from global fits
• Electric dipole moments from colour-octet scalars
• $K^0-{\bar{K}}^0$ mixing in the minimal flavor-violating two-Higgs-doublet models
• Validity of two Higgs doublet models with a scalar color octet up to a high energy scale
• Colored scalars and the neutron electric dipole moment
• Testing minimal lepton flavor violation with extra vector-like leptons at the LHC
• Electron Electric Dipole Moment induced by Octet-Colored Scalars
• Resonance contribution of scalar color octet to $t\bar{t}$ production at the LHC in the minimal four color quark-lepton symmetry model
• Improving Heavy Dijet Resonance Searches Using Jet Substructure at the LHC
• Fingerprinting the contribution of colored scalars to the $H^{+}{W}^{-}Z(\gamma )$ vertex
• On long-lived electroweak-singlet coloured scalars
• SU(5) Octet Scalar at the LHC
• Colour Octet Extension of 2HDM
• Octet scalars shaping LHC distributions in 4-jet final states
• Chromo-Rayleigh Interactions of Dark Matter