scholarly journals Direct Measurement of the Total Decay Width of the Top Quark

2013 ◽  
Vol 111 (20) ◽  
Author(s):  
T. Aaltonen ◽  
S. Amerio ◽  
D. Amidei ◽  
A. Anastassov ◽  
A. Annovi ◽  
...  
Keyword(s):  
Decay Width ◽  
Direct Measurement ◽  
Top Quark ◽  
Total Decay Width

DIRECT MEASUREMENT OF THE W WIDTH IN $p{\bar p}$ COLLISIONS AT $\sqrt{s} = 1.96~{\rm TEV}$

2005 ◽  
Vol 20 (15) ◽  
pp. 3243-3252
Author(s):  
JUNJIE ZHU
Keyword(s):  
Decay Width ◽  
Direct Measurement ◽  
W Boson ◽  
Mass Region ◽  
Transverse Mass ◽  
Tail Region ◽  
Total Decay Width ◽  
Tevatron Collider ◽  
Mass Distributions ◽  
200 Gev

This paper describes a direct measurement of the W boson total decay width ΓW using the DØ detector at the Fermilab Tevatron Collider. The measurement uses an integrated luminosity of 177.3 pb-1, collected during the 2002-2003 run. The width is determined by normalizing the predicted signal and background transverse mass distributions to 75,285 W → eν candidates in the transverse mass region 50 < MT < 100 GeV and then fitting the predicted shape to the 625 candidates in the tail region 100 < MT < 200 GeV . The W width is determined to be ΓW = 2.011 ± 0.093 ( stat ) ± 0.107 ( syst ) GeV .

scholarly journals Direct Bound on the Total Decay Width of the Top Quark inpp¯Collisions ats=1.96  TeV

2009 ◽  
Vol 102 (4) ◽  
Author(s):  
T. Aaltonen ◽  
J. Adelman ◽  
T. Akimoto ◽  
M. G. Albrow ◽  
B. Álvarez González ◽  
...  
Keyword(s):  
Decay Width ◽  
Top Quark ◽  
Total Decay Width

scholarly journals Direct measurement of the top quark mass by the DØ Collaboration

1998 ◽  
Vol 58 (5) ◽  
Author(s):  
B. Abbott ◽  
M. Abolins ◽  
B. S. Acharya ◽  
I. Adam ◽  
D. L. Adams ◽  
...  
Keyword(s):  
Direct Measurement ◽  
Top Quark ◽  
Quark Mass ◽  
Top Quark Mass

scholarly journals DATA TAKING STRATEGY FOR THE PHASE STUDY IN ψ′→K+K-

2012 ◽  
Vol 27 (25) ◽  
pp. 1250150 ◽  
Author(s):  
B. Q. WANG ◽  
X. H. MO ◽  
C. Z. YUAN ◽  
Y. BAN
Keyword(s):  
Decay Width ◽  
Relative Phase ◽  
Resonance Peak ◽  
Numerical Results ◽  
Point Of View ◽  
Theoretical Point ◽  
Total Decay Width ◽  
Decay Channels ◽  
Phase Study ◽  
Scan Data

The study of the relative phase between strong and electromagnetic amplitudes is of great importance for understanding the dynamics of charmonium decays. The information of the phase can be obtained model-independently by fitting the scan data of some special decay channels, one of which is ψ′ →K+K-. To find out the optimal data taking strategy for a scan experiment in the measurement of the phase in ψ′ →K+ K-, the minimization process is analyzed from a theoretical point of view. The result indicates that for one-parameter fit, only one data taking point in the vicinity of a resonance peak is sufficient to acquire the optimal precision. Numerical results are obtained by fitting simulated scan data. Besides the results related to the relative phase between strong and electromagnetic amplitudes, the method is extended to analyze the fits of other resonant parameters, such as the mass and the total decay width of ψ′.

PROPERTIES OF THE W BOSON FROM THE FERMILAB TEVATRON

1995 ◽  
Vol 10 (31) ◽  
pp. 4413-4467 ◽  
Author(s):  
SACHA E. KOPP
Keyword(s):  
Perturbative Qcd ◽  
Decay Width ◽  
Top Quark ◽  
W Boson ◽  
Vector Boson ◽  
Branching Ratios ◽  
Experimental Knowledge ◽  
Intermediate Vector ◽  
Intermediate Vector Boson

The experimental knowledge of the charged intermediate vector boson, the W, is reviewed. Measurements of the electroweak properties of the W boson, such as its mass, decay width, couplings to fermions, and leptonic branching ratios, are summarized. As well, I review production properties of the W as measured in [Formula: see text] collisions and how they can be used as tests of perturbative QCD. I also discuss new particle searches that make use of the W signature, such as new charged electroweak bosons and the now-confirmed discovery of the top quark.

Sign in / Sign up

Export Citation Format

Share Document