Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-09-16
PoS EPS-HEP2009 2009:232,2009
Physics
High Energy Physics
High Energy Physics - Experiment
To appear in the proceedings of the 2009 Europhysics Conference on High Energy Physics, July 16-22, 2009, Krakow, Poland
Scientific paper
The BABAR Collaboration has performed three searches for a light Higgs boson, $A^0$, in radiative Upsilon ($\Upsilon$) decays: $\Upsilon(3S)\to\gamma A^0$, $A^0\to\tau^+\tau^-$; $\Upsilon(nS)\to\gamma A^0$, $A^0\to\mu^+\mu^-$ ($n=2,3$); and $\Upsilon(3S)\to\gamma A^0$, $A^0\to$ invisible. Such a Higgs boson ($A^0$) appears in the Next-to-Minimal Supersymmetric extensions of the Standard Model, where a light CP-odd Higgs boson couples strongly to $b$-quarks. The searches are based on data samples that consist of $122\times 10^6$ $\Upsilon(3S)$ and $99\times 10^6$ $\Upsilon(2S)$ decays, collected by the BABAR detector at the SLAC National Accelerator Laboratory. The searches reveal no evidence for an $A^0$, and product of branching fractions upper limits, at 90% C.L., of $(1.5-16)\times 10^{-5}$, $(0.44-44)\times 10^{-6}$, and $(0.7-31)\times 10^{-6}$ were obtained for these searches, respectively. Also, we set the upper limits ${\mathcal {B}}(\eta_b\to\tau^+\tau^-)<8%$ and ${\mathcal {B}}(\eta_b\to\mu^+\mu^-)<0.9%$.
No associations
LandOfFree
Search for a low-mass Higgs boson ($A^0$) at BABAR 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 Search for a low-mass Higgs boson ($A^0$) at BABAR, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Search for a low-mass Higgs boson ($A^0$) at BABAR will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-583439