Hints of new physics in bottomonium decays and spectroscopy

Abstract

A non-standard light CP-odd Higgs boson could induce a slight (but observable) lepton universality breakdown in Upsilon leptonic decays. Moreover, the mixing between such a pseudoscalar Higgs and ${\eta }_b$ states might shift the mass levels of the latter, thereby changing the values of the $m_{{\rm Y}(nS)}-m_{{\eta }_b(nS)}$ splittings predicted in the standard model. Besides, also the ${\eta }_b$ width could be broader than expected, with potentially negative consequences for its discovery in both $e^{+}{e}^{-}$ and hadron colliders.

4 pages, 3 EPS figures, Talk given at BEACH 2004, 27/6/04 - 3/7/04 IIT Chicago

References in corpus (6)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Collider Probes of the MSSM Higgs Sector with Explicit CP Violation
• Leptonic universality breaking in Upsilon decays as a probe of new physics
• Search for Yukawa Production of a Light Neutral Higgs Boson at LEP
• Axions and Axion-like Particles
• Searching for New Physics in Leptonic Decays of Bottomonium

Cited by in corpus (3)

• The Next-to-Minimal Supersymmetric Standard Model
• Radiative Upsilon decays and a light pseudoscalar Higgs in the NMSSM
• Decays of a NMSSM CP-odd Higgs in the low-mass region