Evidence for s-Channel Single-Top-Quark Production in Events with One Charged Lepton and Two Jets at CDF

Aaltonen, T. and Amerio, S. and Amidei, D. and Anastassov, A. and Annovi, A. and Antos, J. and Apollinari, G. and Appel, J. A. and Arisawa, T. and Artikov, A. and Asaadi, J. and Ashmanskas, W. and Auerbach, B. and Aurisano, A. and Azfar, F. and Badgett, W. and Bae, T. and Barbaro-Galtieri, A. and Barnes, V. E. and Barnett, B. A. and Barria, P. and Bartos, P. and Bauce, M. and Bedeschi, F. and Behari, S. and Bellettini, G. and Bellinger, J. and Benjamin, D. and Beretvas, A. and Bhatti, A. and Nagai, Yoshikazu (2014) Evidence for s-Channel Single-Top-Quark Production in Events with One Charged Lepton and Two Jets at CDF. PHYSICAL REVIEW LETTERS, 112 (23). ISSN 0031-9007

Preview

Text 1402.0484.pdf Available under License Creative Commons Attribution. Download (232kB) | Preview

Abstract

We report evidence for s-channel single-top-quark production in proton-antiproton collisions at center-of-mass energy √s = 1.96 TeV using a data set that corresponds to an integrated luminosity of 9.4 fb−1 collected by the Collider Detector at Fermilab. We select events consistent with the s- channel process including two jets and one leptonically decaying W boson. The observed significance is 3.8 standard deviations with respect to the background-only prediction. Assuming a top-quark mass of 172.5 GeV/c2, we measure the s-channel cross section to be 1.41+0.44 −0.42 pb

Actions (login required)

Edit Item