Probing light pseudoscalar, axial vector states through $η_{b} \toτ^{+}τ^{-}$

Ahmed Rashed; Murugeswaran Duraisamy; Alakabha Datta

doi:10.1103/physrevd.82.054031

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arXiv · 1004.5419

Probing light pseudoscalar, axial vector states through $η_{b} \toτ^{+}τ^{-}$

Ahmed Rashed·Murugeswaran Duraisamy·Alakabha Datta

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Abstract

In this paper we explore the decay $η_b --> τ^+ τ^-$ as a probe for a light pseudoscalar or a light axial vector state. We estimate the standard model branching ratio for this decay to be $~4\times 10^{-9}$. We show that considerably larger branching ratios, up to the present experimental limit of ~8%, is possible in models with a light pseudoscalar or a light axial vector state. As we do not include possible mixing effects between the light pseudoscalar and the $η_b$, our results should be reliable when the pseudoscalar mass is away from the $η_b$ mass.

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Ahmed Rashed, Murugeswaran Duraisamy, Alakabha Datta. 2010-08-27. Probing light pseudoscalar, axial vector states through $η_{b} \toτ^{+}τ^{-}$. https://doi.org/10.1103/physrevd.82.054031

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