4-9 June 2012
Life Sciences Centre, UBC
Canada/Pacific timezone
<strong><font color="#cc0000">Abstract submission has closed</font></strong>

Search for a light Higgs Boson at Babar

4 Jun 2012, 16:00
West Atrium (Life Sciences Centre, UBC)

West Atrium

Life Sciences Centre, UBC

University of British Columbia Vancouver, BC Canada


Mr Rocky So (University of British Columbia)


Babar collided electrons and positrons at a centre of mass energy of ~10GeV at the Stanford Linear Accelerator Center. A light CP-odd Higgs boson is expected in extensions to the Standard Model such as Next to Minimal Supersymmetry. The Babar Collaboration searched for a light Higgs boson (A0) produced in radiative decays of an Υ meson (Υ → γA0). We saw no evidence of the A0 decaying into mu+mu-, tau+tau-, hadrons, or invisible final states with a sample of 122 million Υ(3S), 99 million Υ(2S), and 23 million Υ(1S) from Υ(2,3S) decays collected at the PEP II B-factory. We set upper limits on product branching fractions B(Υ→γA0)xB(A0→various states) as low as 10^-6 for A0 masses from threshold up to 9GeV/c^2. As a result, we exclude a large fraction of parameters space for Next to Minimal Supersymmetry. Some searches are published and a few is still in the analysis stage. I will present work done by the collaboration as well as my work in progress for Υ(1S)→ γA0;A0→hadrons.

<strong>Funding Source</strong>

NSERC (Canada), et al

<strong>Collaboration Name</strong><br /><font color="#000099">Please enter the name of<br />the collaboration or group<br />using the acronym, as in:<br /><font color="#ff0000">ABC Collaboration</font>

Babar Collaboration

<strong>E-mail Address</strong> rockyso@physics.ubc.ca

Primary author

Mr Rocky So (University of British Columbia)

Presentation Materials