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Measurement of the Single Top Quark Production Cross Section and |Vtb | in Events with One Charged Lepton, Large Missing Transverse Energy, and 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) Measurement of the Single Top Quark Production Cross Section and |Vtb | in Events with One Charged Lepton, Large Missing Transverse Energy, and Jets at CDF. PHYSICAL REVIEW LETTERS, 113 (26). ISSN 0031-9007

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Abstract

We report a measurement of single top quark production in proton-antiproton collisions at a center- of-mass energy of √s = 1.96 TeV using a data set corresponding to 7.5 fb−1 of integrated luminosity collected by the Collider Detector at Fermilab. We select events consistent with the single top quark decay process t → W b → `νb by requiring the presence of an electron or muon, a large imbalance of transverse momentum indicating the presence of a neutrino, and two or three jets including at least one originating from a bottom quark. An artificial neural network is used to discriminate the signal from backgrounds. We measure a single top quark production cross section of 3.04+0.57 −0.53 pb and set a lower limit on the magnitude of the coupling between the top quark and bottom quark |Vtb | > 0.78 at the 95% credibility level.

Item Type: Article
Subjects: Q Science / természettudomány > QC Physics / fizika
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 11 Apr 2024 14:40
Last Modified: 11 Apr 2024 14:40
URI: https://real.mtak.hu/id/eprint/192367

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