Abulencia, A;
Adelman, J;
Affolder, T;
Akimoto, T;
Albrow, MG;
Ambrose, D;
Amerio, S;
... CDF Collaboration; + view all
(2007)
Search for V plus A current in top-quark decays in p(p)over-bar collisions root s=1.96 TeV.
PHYS REV LETT
, 98
(7)
, Article 072001. 10.1103/PhysRevLett.98.072001.
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Abstract
We report an upper limit on the fraction of V+A current, f(V+A), in top-quark decays, using approximately 700 pb(-1) of p (p) over bar collisions at root s=1.96 TeV acquired by the upgraded Collider Detector at Fermilab. For the decay t -> Wb ->center dot nu b (where center dot=e or mu), the invariant mass of the charged lepton and the bottom quark jet is sensitive to the polarization of the W boson. We determine f(V+A)=-0.06 +/- 0.25 given a top-quark mass of 175 GeV/c(2). We set an upper limit on f(V+A) of 0.29 at the 95% confidence level, an improvement by a factor of 2 on the previous best direct limit.
| Type: | Article |
|---|---|
| Title: | Search for V plus A current in top-quark decays in p(p)over-bar collisions root s=1.96 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.98.072001 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.98.072001 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | PHYSICS |
| UCL classification: | UCL > Provost and Vice Provost Offices 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/131697 |
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