A Measurement of the ratio $\sigma \times B(p\bar{p} \to W \to e \nu) / \sigma \times B(p\bar{p} \to Z^0 \to e e)$ in $p\bar{p}$ collisions at $\sqrt{s} = 1800$ GeV

We present an analysis of data from p p¯ collisions at a center-of-mass energy of √s =1800 GeV. A measurement is made of the ratio R≡σB(p p¯→W→eν)/σB(p p¯→Z0→ee). The data represent 19.6 pg−1 collected by the Collider Detector at Fermilab during the 1992–1993 collider run of the Fermilab Tevatron. We find R=10.90±0.32(stat)±0.29(syst), and from this value we extract a measurement of the W→eν branching ratio Γ(W→eν)/Γ(W)=0.1094±0.0033(stat)±0.0031(syst). From this branching ratio we set a limit on the top quark mass of mt>62 GeV/c2 at the 95% confidence level. In contrast with direct searches for the top quark, this limit makes no assumptions about the allowed decay modes of the top quark. In addition, we use a calculation of the leptonic width Γ(W→eν) to obtain a value for the W total decay width: Γ(W)=2.064±0.060(stat)±0.059(syst) GeV.

anti-p p: colliding beams
colliding beams: anti-p p
anti-p p: inclusive reaction
W: hadroproduction
hadroproduction: W
Z0: hadroproduction
hadroproduction: Z0
intermediate boson: leptonic decay
leptonic decay: intermediate boson
channel cross section: branching ratio

References(38)

Figures(0)

Search for the top quark in $p\bar{p}$ collisions at $\sqrt{s} = 1.8$ TeV

D0

Collaboration

•

S. Abachi

et al.

- Phys.Rev.Lett. 72 (1994) 2138-2142
•
DOI:
- 10.1103/PhysRevLett.72.2138

Evidence for Top Quark Production in $\bar{p}p$ Collisions at $\sqrt{s} = 1.8$ TeV

CDF

Collaboration

•

F. Abe

et al.

- Phys.Rev.Lett. 73 (1994) 225-231
•
e-Print:
- hep-ex/9405005
•
DOI:
- 10.1103/PhysRevLett.73.225

Evidence for top quark production in $\bar{p}p$ collisions at $\sqrt{s} = 1.8$ TeV

CDF

Collaboration

•

F. Abe

et al.

- Phys.Rev.D 50 (1994) 2966-3026
•
DOI:
- 10.1103/PhysRevD.50.2966

Search for the top quark decaying to charged Higgs in $p\bar{p}$ collisions at $\sqrt{s} = 1.8$ TeV

CDF

Collaboration

•

F. Abe

et al.

- Phys.Rev.Lett. 72 (1994) 1977-1981
•
DOI:
- 10.1103/PhysRevLett.72.1977

Search for the top quark decaying to a charged Higgs boson in $\bar{p}p$ collisions at $\sqrt{s} = 1.8$ TeV

CDF

Collaboration

•

F. Abe
(
- KEK, Tsukuba
)

et al.

- Phys.Rev.Lett. 73 (1994) 2667-2671
•
DOI:
- 10.1103/PhysRevLett.73.2667

The W-boson width

- Z.Phys.C 46 (1990) 653-663
•
DOI:
- 10.1007/BF01560267

Techniques for calculation of electroweak radiative corrections at the one loop level and results for W physics at LEP-200

Ansgar Denner
(
- Wurzburg U.
)

- Fortsch.Phys. 41 (1993) 307-420
•
e-Print:
- 0709.1075
•
DOI:
- 10.1002/prop.2190410402

Oblique corrections to the $W$ width

Jonathan L. Rosner
(
- Chicago U., EFI
)
,
Mihir P. Worah
(
- Chicago U., EFI
)
,
Tatsu Takeuchi
(
- Fermilab
)

- Phys.Rev.D 49 (1994) 1363-1369
•
e-Print:
- hep-ph/9309307
•
DOI:
- 10.1103/PhysRevD.49.1363

Radiative Corrections in the SU(2)-L x U(1) Theory: A Simple Renormalization Framework

A. Sirlin
(
- Princeton, Inst. Advanced Study
)

- Phys.Rev.D 22 (1980) 971-981
•
DOI:
- 10.1103/PhysRevD.22.971

Radiative Corrections in the Standard Model and their Role for Precision Tests of the Electroweak Theory

W.F.L. Hollik
(
- Hamburg U.
)

- Fortsch.Phys. 38 (1990) 165-260
•
DOI:
- 10.1002/prop.2190380302

Limits to the Number of Neutrinos: A Comment on the Z0 Discovery

F. Halzen
(
- Helsinki U.
)
,
K. Mursula
(
- Helsinki U.
)

- Phys.Rev.Lett. 51 (1983) 857-858,
- Phys. Rev. Lett. 51 (1983) 857-858 and Helsinki Univ. - HU-TFT-83-36 (83,REC.JUL.) 6p
•
DOI:
- 10.1103/PhysRevLett.51.857