Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-11-21
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages including 6 figures. Discussion on NMSSM parameter space added
Scientific paper
The HyperCP collaboration has observed three events for the decay $\Sigma^+ \to p \mu^+ \mu^-$. The three events may be interpreted as a new narrow-width CP-odd scalar $a$ with the mass $214.3 \pm 0.5$ MeV. Here $a$ decays dominantly into di-muon ($\mu^+\mu^-$). As the consequence of tiny mass difference between $m_a$ and 2$m_\mu$ ($2 m_{\mu} \approx$ 211.3 MeV), di-muon will be boosted to almost the same direction at colliders. Such kind of di-muon events have been overlooked in the past experiments. Provided that the precision data preferred light SM-like Higgs boson $h$ decays dominantly into $a a$ other than into $b\bar b$, in order to be consistent with null Higgs boson search at LEP, the $h\to aa \to 4\mu$ ($2\mu^+ 2\mu^-$) will be the unique Higgs boson signature which has not been noticed before. The SM-like Higgs boson may hide itself from the usual analysis of LEP and Tevatron experiments, which should be reanalyzed in the light of new theoretical and experimental developments. In this paper, we also investigate this unique Higgs boson signature at colliders and conclude that the SM-like Higgs boson could be discovered with rather low integrated luminosity, provided that the $h\to 4\mu$ reconstruction efficiency is not extremely low. It is not impossible that such kind of unique Higgs boson $4\mu$ events are now lurking in the existing LEP and/or Tevatron data.
Yin Peng-Fei
Zhu Shou-hua
No associations
LandOfFree
Unique Higgs boson signature at colliders does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Unique Higgs boson signature at colliders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unique Higgs boson signature at colliders will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-339141