Document Type
Article
Publication Date
6-28-2010
Abstract
We report a measurement of the ratio of the tt̄ to Z/γ*production cross sections in √s=1.96TeV pp̄ collisions using data corresponding to an integrated luminosity of up to 4.6fb-1, collected by the CDF II detector. The tt̄ cross section ratio is measured using two complementary methods, a b-jet tagging measurement and a topological approach. By multiplying the ratios by the well-known theoretical Z/γ*→ll cross section predicted by the standard model, the extracted tt̄ cross sections are effectively insensitive to the uncertainty on luminosity. A best linear unbiased estimate is used to combine both measurements with the result σtt̄=7.70±0.52pb, for a top-quark mass of 172.5GeV/c2. © 2010 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Recommended Citation
Aaltonen, T., Adelman, J., Álvarez González, B., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Apresyan, A., Arisawa, T., Artikov, A., Asaadi, J., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., Badgett, W., Barbaro-Galtieri, A., Barnes, V., Barnett, B., Barria, P., Bartos, P., Bauer, G., Beauchemin, P., Bedeschi, F., Beecher, D., & Behari, S. (2010). Measurement of the ratio σtt̄/σZ/γ*→ll and precise extraction of the tt̄ cross section. Physical Review Letters, 105 (1) https://doi.org/10.1103/PhysRevLett.105.012001