Affolder, T;
Akimoto, H;
Akopian, A;
Albrow, MG;
Amaral, P;
Amendolia, SR;
Amidei, D;
... CDF Collaboration, The; + view all
(2000)
Search for a fourth-generation quark more massive than the Z(0) boson in p(p)over-bar collisions at root s=1.8 TeV.
Physical Review Letters
, 84
(5)
835 - 840.
10.1103/PhysRevLett.84.835.
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Abstract
We present the results of a search for pair production of a fourth-generation charge -1/3 quark (b') in root s = 1.8 TeV p (p) over bar collisions using 88 pb(-1) of data obtained with the Collider Detector at Fermilab. We assume that both quarks decay via the flavor-changing neutral current process b' --> bZ(0) and that the b' mass is greater than m(Z) + m(b). We studied the decay mode b'<(b')over bar> --> Z(0)Z(0)b (b) over bar where one Z(0) decays into e(+) e(-) or mu(+) mu(-) and the other decays hadronically, giving a signature of two leptons plus jets. An upper limit on the sigma(p (p) over bar --> b'<(b')over bar>) x [B(b' --> bZ(0))](2) is established as a function of the b' mass. We exclude at 95% confidence level a b' quark with mass between 100 and 199 GeV/c(2) for B(b' --> bZ(0)) = 100%.
| Type: | Article |
|---|---|
| Title: | Search for a fourth-generation quark more massive than the Z(0) boson in p(p)over-bar collisions at root s=1.8 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.84.835 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.84.835 |
| Language: | English |
| Additional information: | © 2000 The American Physical Society |
| Keywords: | NEUTRAL-CURRENT DECAY, TOP-QUARK, B' QUARK, LEPTONS, MODEL, SYMMETRY, PHOTONS, TRISTAN, CHARGE, EVENTS |
| 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-pp.ucl.ac.uk/id/eprint/131944 |
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