A Direct measurement of the w boson decay width in $p\bar{p}$ collisions at 1.8-TeV

1998 ◽  
Author(s):  
William Joseph Ashmanskas
Keyword(s):  
Decay Width ◽  
Direct Measurement ◽  
W Boson

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 .

The sircular polarization of γ-quanta in the radiative decay H Þ`ffγ (II)

2021 ◽  
pp. 134-141
Author(s):  
S.K. Abdullayev ◽  
◽  
E.Sh. Omarova ◽  
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Circular Polarization ◽  
Invariant Mass ◽  
Decay Width ◽  
Radiative Decay ◽  
W Boson ◽  
Decay Channel ◽  
Fermion Pair ◽  
The Standard Model

Within the framework of the Standard Model, the radiative decay channel of the Higgs boson into fermion-antifermion pair is investigated: H Þ` ff γ. Taking into account the fermion and W -boson loop diagrams an analytical expression for the decay width is obtained, the circular polarization of the γ-quanta is studied in dependence of the angle θ and invariant mass of the fermion pair.

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.

scholarly journals Impact of the W boson decay width on photon bremsstrahlung accompanying W pair production

2000 ◽  
Vol 18 (1) ◽  
pp. 73-82 ◽  
Author(s):  
A.P. Chapovsky ◽  
V.A. Khoze ◽  
W.J. Stirling
Keyword(s):  
Pair Production ◽  
Decay Width ◽  
W Boson

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

MEASUREMENTS OF THE W AND Z PRODUCTION CROSS SECTIONS TIMES THE LEPTONIC BRANCHING RATIOS AT THE FERMILAB TEVATRON

2005 ◽  
Vol 20 (15) ◽  
pp. 3225-3229
Author(s):  
VICTORIA MARTIN
Keyword(s):  
Decay Width ◽  
Cross Sections ◽  
W Boson ◽  
Production Cross ◽  
Z Bosons ◽  
Branching Ratios ◽  
Total Decay Width ◽  
The Cross ◽  
Using Data

We report measurements of inclusive cross sections times branching ratios in electrons, muons or taus for W and Z bosons produced in [Formula: see text] collisions at 1.96 TeV using data collected with the DØ and CDF detectors in 2002-2004. Using the ratio of the cross sections times branching ratios for the W and Z bosons we also obtain constraints on the total decay width of the W boson.

scholarly journals Gauge Bosons in the 3-3-1 Model with Three Neutrino Singlets

2015 ◽  
Vol 25 (3) ◽  
pp. 227
Author(s):  
Hoang Ngoc Long ◽  
Lam Phu An Huy ◽  
Tran Thanh Thuy ◽  
Ly Thi Tu Tran ◽  
Vu Thi Hoang Yen
Keyword(s):  
Lower Bound ◽  
Decay Width ◽  
Gauge Boson ◽  
W Boson ◽  
Mass Matrix ◽  
Vacuum Expectation ◽  
Expectation Values ◽  
Gauge Bosons ◽  
Proposed Model ◽  
Higgs Fields

We show that the mass matrix of electrically neutral gauge bosons in the recent proposed  model based on \(\mathrm{SU}(3)_C\otimes \mathrm{SU}(3)_L\otimes \mathrm{U}(1)_X\) group with three neutrino singlets [9] has two exact eigenvalues and corresponding eigenvectors. Hence the neutral non-Hermitian gauge boson \(X^0_\mu\) is properly determined.With extra vacuum expectation values of the Higgs fields, there are mixings among charged gauge bosons \(W^\pm\) and \(Y^\pm\) as well as amongneutral gauge bosons \(Z, Z'\) and \(X^0\). From the $W$ boson decay width, we get lower bound on  scale of the model about few TeVs.

A direct measurement of the total proton decay width of an isobaric analog state

1971 ◽  
Vol 34 (7) ◽  
pp. 594-596 ◽  
Author(s):  
T.J. Woods ◽  
G.J. Igo ◽  
C.A. Whitten ◽  
W. Dunlop ◽  
G.W. Hoffmann
Keyword(s):  
Decay Width ◽  
Direct Measurement ◽  
Proton Decay ◽  
Isobaric Analog ◽  
Isobaric Analog State
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