scholarly journals Measurements ofZ-boson resonance parameters ine+e−annihilation

1989 ◽  
Vol 63 (20) ◽  
pp. 2173-2176 ◽  
Author(s):  
G. S. Abrams ◽  
C. E. Adolphsen ◽  
D. Averill ◽  
J. Ballam ◽  
B. C. Barish ◽  
...  
Keyword(s):  
Resonance Parameters ◽  
Boson Resonance

scholarly journals Initial measurements ofZ-boson resonance parameters ine+e−annihilation

1989 ◽  
Vol 63 (7) ◽  
pp. 724-727 ◽  
Author(s):  
G. S. Abrams ◽  
C. E. Adolphsen ◽  
R. Aleksan ◽  
J. P. Alexander ◽  
M. A. Allen ◽  
...  
Keyword(s):  
Resonance Parameters ◽  
Boson Resonance

Search for a boson resonance of mass 960 MeV

1967 ◽  
Vol 25 (4) ◽  
pp. 300-302 ◽  
Author(s):  
M. Banner ◽  
M.L. Fayoux ◽  
J.L. Hamel ◽  
J. Zsembery ◽  
J. Cheze ◽  
...  
Keyword(s):  
Boson Resonance

scholarly journals CONVOLUTION FORMULA AND FINITE W BOSON WIDTH EFFECTS IN TOP QUARK WIDTH

2008 ◽  
Vol 23 (22) ◽  
pp. 3525-3533 ◽  
Author(s):  
G. CALDERÓN ◽  
G. LÓPEZ CASTRO
Keyword(s):  
Top Quark ◽  
W Boson ◽  
Matrix Theory ◽  
Finite Width ◽  
Current Limit ◽  
Fermion Masses ◽  
Convolution Formula ◽  
Boson Resonance ◽  
Three Body ◽  
Massless Fermions

In the Standard Model, the top quark decay width Γt is computed from the exclusive t → bW decay. We argue in favor of using the three body decays [Formula: see text] to compute Γt as a sum over these exclusive modes. As dictated by the S-matrix theory, these three body decays of the top quark involve only asymptotic states and incorporate the width of the W boson resonance in a natural way. The convolution formula commonly used to include the finite width effects is found to be valid, in the general case, when the intermediate resonance couples to a conserved current (limit of massless fermions in the case of W bosons). The relation Γt = Γ(t → bW) is recovered by taking the limit of massless fermions followed by the W boson narrow width approximation. Although both calculations of Γt are different at the formal level, their results would differ only by tiny effects induced by light fermion masses and higher-order radiative corrections.

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