Results and Comparisons of bbh(->bb) Limit Setting

Our submitted results were calculated without refitting the background at each trial signal cross-section value (although our preliminary results based on 130/pb included the refitting). Instead, the background was calculated for a fixed cross-section corresponding to tanB=50 (assuming b-h coupling enhancement proportional to tanB). These previous results are compared to the results obtained with refitting below. The difference in cross-section limits is small (corresponding to tanB values of 1 or 2 units). The background normalization is smaller by 2-3% at the excluded cross-section, depending on mass, when refitting the background at each trial cross-section value.

Floating background

(refit outside 2 sigma

at each trial cross-section)

Fixed background

(fit at tanB=50)

Andy Haas

2004-07-07T15:59:13