Abulencia, A;
Acosta, D;
Adelman, J;
Affolder, T;
Akimoto, T;
Albrow, MG;
Ambrose, D;
... CDF Collaboration; + view all
(2006)
Top-quark mass measurement from dilepton events at CDF II.
PHYS REV LETT
, 96
(15)
, Article 152002. 10.1103/PhysRevLett.96.152002.
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Abstract
We report a measurement of the top-quark mass using events collected by the CDF II detector from pp collisions at root s=1.96 TeV at the Fermilab Tevatron. We calculate a likelihood function for the top-quark mass in events that are consistent with tt -> b center dot(-)nu(center dot)b center dot('+)nu(')(center dot) decays. The likelihood is formed as the convolution of the leading-order matrix element and detector resolution functions. The joint likelihood is the product of likelihoods for each of 33 events collected in 340 pb(-1) of integrated luminosity, yielding a top-quark mass M-t=165.2 +/- 6.1(stat)+/- 3.4(syst) GeV/c(2). This first application of a matrix-element technique to t -> b center dot(+)nu(center dot)b center dot('-)nu(')(center dot) decays gives the most precise single measurement of M-t in dilepton events. Combined with other CDF run II measurements using dilepton events, we measure M-t=167.9 +/- 5.2(stat)+/- 3.7(syst) GeV/c(2).
| Type: | Article |
|---|---|
| Title: | Top-quark mass measurement from dilepton events at CDF II |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.96.152002 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.96.152002 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| Keywords: | FERMILAB TEVATRON |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/136316 |
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