Combined Upper Limits on Standard - Model Higgs - Boson Production from the DØ Experiment

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Upper limits on the cross section for Standard Model Higgs-boson production in p¯ p → H + X at √ s = 1.96 TeV are determined for 100 < mH < 200 GeV/c 2. The contributing production processes include associated production (W H → νb ¯ b, ZH → /ννb ¯ b) and gluon fusion (H → W + W −). Analyses are conducted with integrated luminosities from 0.84 fb −1 to 1.05 fb −1 recorded by the DØ experiment. Limits for various combinations of the channels are presented. The results are in good agreement with background expectations and the 95% CL upper limits are found to be a factor of 8.4 (3.7) higher than the Standard Model cross section at mH =115 (160) GeV/c 2 .

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تاریخ انتشار 2007