Flavor changing neutral currents, an extended scalar sector, and the Higgs production rate at the CERN Large Hadron Collider

2006/06/30 by Aneesh V. Manohar, Mark B. Wise · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.74.035009

published as Phys.Rev.D74:035009,2006 · Minor changes

arxiv created 2006/08/15 · openalex publication_date 2006/08/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study extensions of the standard model with additional colored scalar fields which can couple directly to quarks. Natural suppression of flavor changing neutral currents implies minimal flavor violation, and fixes the scalars to transform as (8,2)_1/2 under the SU(3)\ifmmode×\else\texttimes\fiSU(2)\ifmmode×\else\texttimes\fiU(1) gauge symmetry. We explore the phenomenology of the standard model with one additional (8,2)_1/2 scalar, and discuss how this extension can modify flavor physics and the Higgs boson production rate at the LHC. Custodial SU(2) symmetry can be implemented for the octet scalars since they transform as a real color representation. Additional weak scale degrees of freedom needed for gauge unification are discussed.

Citations

• Higgs boson production at hadron colliders in NNLO QCD
• Next-to-leading order QCD corrections to differential distributions of Higgs boson production in hadron–hadron collisions
• Modifications to the properties of the Higgs boson
• Next-to-Next-to-Leading Order Higgs Production at Hadron Colliders
• Soft-gluon resummation for Higgs boson production at hadron colliders

Cited by

• An exactly solvable model for dimension-six Higgs operators and h→γγ
• Bsmixing and electric dipole moments in the framework of minimal flavor violation