Abstract
The branching ratio of the lightest Higgs boson decay into bb̅ , ττ̅ and cc̅ is sensitive to supersymmetric effects. We include in this work the effects of CP phases on the Higgs boson decays. Specifically we compute the deviation of the CP phase dependent branching ratio from the standard model result. The analysis includes the full one loop corrections of fermion masses including CP phases involving the gluino, the chargino and the neutralino exchanges. The analysis shows that the supersymmetric effects with CP phases can change the branching ratios by as much as 100% for the lightest Higgs boson decay into bb̅ and ττ̅ with similar results holding for the heavier Higgs boson decays. A detailed analysis is also given for the effects of CP phases on the Higgs boson decays into cc̅ . The deviations of Rb/τ and Rb/c from the standard model result are investigated as a possible signature of supersymmetry and CP effects. Thus a measurement of the decays of the Higgs boson into bb̅ , ττ̅ and cc̅ may provide important clues regarding the existence of supersymmetry and CP phases.
Keywords
Higgs boson decay, CP phases, bb̅, ττ̅, cc̅
Subject Categories
Higgs bosons, Supersymmetry, Branching ratios (Nuclear physics)
Disciplines
Physics
Publisher
American Physical Society
Publication Date
7-28-2003
Rights Information
Copyright (2003) American Physical Society
Rights Holder
American Physical Society
Recommended Citation
Ibrahim, Tarek and Nath, Pran, "Decays of Higgs bosons to bb̅ , ττ̅ , and cc̅ as signatures of supersymmetry and CP phases" (2003). Physics Faculty Publications. Paper 442.
Click button above to open, or right-click to save.
Notes
Originally published in Physical Review D v.68 (2003): 015008. DOI: 10.1103/PhysRevD.68.015008