| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1845660 | Nuclear Physics B - Proceedings Supplements | 2011 | 6 Pages |
Abstract
A light CP-odd Higgs boson mixing with ηb hadronic resonances can show up by inducing a slight but observable lepton universality breaking in Upsilon decays. Besides, hyperfine splittings mϒ(nS)−mηb(nS) might also be sensitive to the mixing providing another hint of the existence of such a light pseudoscalar Higgs. On the other hand, recent findings from astroparticle and cosmology favouring a light dark matter constituent (with mass about 10 GeV or less) cast a new interest into the search for invisible decays of ϒ resonances performed at B factories.
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