scholarly journals Z boson as “the standard candle” for high-precision W boson physics at LHC

2007 ◽  
Vol 51 (3) ◽  
pp. 607-617 ◽  
Author(s):  
M.W. Krasny ◽  
F. Fayette ◽  
W. Płaczek ◽  
A. Siódmok
Keyword(s):  
High Precision ◽  
Z Boson ◽  
W Boson ◽  
Standard Candle

scholarly journals Signals of a 2 TeV W′ boson and a heavier Z′ boson

2016 ◽  
Vol 2016 (5) ◽  
Author(s):  
Bogdan A. Dobrescu ◽  
Patrick J. Fox
Keyword(s):  
Z Boson ◽  
W Boson

CANCELLATION OF ULTRAVIOLET DIVERGENCES IN THE SU(2)L×U(1) ELECTROWEAK MODEL

1989 ◽  
Vol 04 (28) ◽  
pp. 2733-2738 ◽  
Author(s):  
ROGER DECKER ◽  
JEAN PESTIEAU
Keyword(s):  
Top Quark ◽  
Z Boson ◽  
Charged Lepton ◽  
W Boson ◽  
Boson Mass ◽  
Three Generations ◽  
Electroweak Model

We assume that, in the SU(2)L×U(1) model, ultraviolet divergences of the charged lepton self-masses are zero. We predict the top and Higgs masses in the vicinity of the Z-boson mass. Our assumption holds only if there are no more than three generations of quarks and leptons and if quarks and leptons, except for the top quark, have negligible masses compared to the W-boson mass.

scholarly journals Electroweak measurements from W, Z and photon final states

2014 ◽  
Vol 31 ◽  
pp. 1460276
Author(s):  
Hang Yin ◽  
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Z Boson ◽  
W Boson ◽  
Charge Asymmetry ◽  
Distribution Functions ◽  
Boson Mass ◽  
Electroweak Theory ◽  
Final States ◽  
Parton Distribution Functions

We present the most recent precision electroweak measurements of single W and Z boson cross section and properties from the LHC and Tevatron colliders, analyzing data collected by ATLAS, CDF, CMS, D0, and LHCb detectors. The results include the measurement of the single W and Z boson cross section at LHC, the differential cross section measurements, the measurement of W boson mass, the measurement of W and Z charge asymmetry. These measurements provide precision tests on the electroweak theory, high order predictions and the information can be used to constraint parton distribution functions.

scholarly journals THEORY OF ELECTROWEAK INTERACTIONS WITHOUT SPONTANEOUS SYMMETRY BREAKING

2001 ◽  
Vol 16 (25) ◽  
pp. 4171-4188 ◽  
Author(s):  
BING AN LI
Keyword(s):  
Symmetry Breaking ◽  
Spontaneous Symmetry Breaking ◽  
Z Boson ◽  
W Boson ◽  
Axial Vector ◽  
Fermion Mass ◽  
Electroweak Theory ◽  
Intermediate Boson ◽  
Generating Functional ◽  
Fermion Masses

An electroweak theory without spontaneous symmetry breaking is studied in this paper. A new symmetry breaking of SU (2)L × U (1), axial-vector symmetry breaking, caused by the combination of the axial-vector component of the intermediate boson and the fermion mass is found in electroweak theory. The mass of the W boson is resulted in the combination of the axial-vector symmetry breaking and the explicit symmetry breaking by the fermion masses. The Z boson gains mass from the axial-vector symmetry breaking only. [Formula: see text], [Formula: see text], and [Formula: see text] are obtained. They are in excellent agreement with data. The SU (2)L × U (1) invariant generating functional of the Green functions is constructed and the theory is proved to be renormalizable.

scholarly journals Review of physics results from the Tevatron: Electroweak physics

2015 ◽  
Vol 30 (06) ◽  
pp. 1541004 ◽  
Author(s):  
Ashutosh V. Kotwal ◽  
Heidi Schellman ◽  
Jadranka Sekaric
Keyword(s):  
Z Boson ◽  
W Boson ◽  
Mass Measurement ◽  
New Physics ◽  
Boson Mass ◽  
Precision Measurements ◽  
Boson Production ◽  
Physics Program ◽  
Electroweak Sector ◽  
Electroweak Physics

We summarize an extensive Tevatron (1984–2011) electroweak physics program that involves a variety of W and Z boson precision measurements. The relevance of these studies using single and associated gauge boson production to our understanding of the electroweak sector, quantum chromodynamics and searches for new physics is emphasized. We discuss the importance of the W boson mass measurement, the W/Z boson distributions and asymmetries, and diboson studies. We highlight the recent Tevatron measurements and prospects for the final Tevatron measurements.

scholarly journals CONSTRAINING THE RIGHT-HANDED INTERACTIONS FROM PION CONDENSATE MATTER

2000 ◽  
Vol 15 (04) ◽  
pp. 509-522
Author(s):  
ASHOK GOYAL ◽  
SUKANTA DUTTA
Keyword(s):  
Z Boson ◽  
Neutral Pion ◽  
W Boson ◽  
Neutrino Emission ◽  
Pion Condensate ◽  
The Right ◽  
Range Of Values

We consider right-handed neutrino emission from charged and neutral pion condensate matter that could have been present in the supernova core associated with SN 1987 A. This is used to constrain the strength of right-handed interactions and we get an excluded range of values for the right-handed W boson and extra neutral Z' boson masses. For vanishing WL–WR mixing we obtain (1.3–1.8) MWL ≈≤ MWR ≤≈ (370–700) MWL and (1.3–1.8) MWL ≈≤ MN' ≤≈ 158MWL.

scholarly journals ELECTROWEAK RADIATIVE CORRECTIONS TO W AND Z BOSON PRODUCTION AT HADRON COLLIDERS

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 326-328 ◽  
Author(s):  
ULRICH BAUR ◽  
DOREEN WACKEROTH
Keyword(s):  
Precision Measurement ◽  
Z Boson ◽  
W Boson ◽  
Boson Mass ◽  
Radiative Corrections ◽  
Hadron Colliders ◽  
High Precision Measurement ◽  
Electroweak Radiative Corrections ◽  
Theoretical Predictions ◽  
The Status

For the envisioned high precision measurement of the W boson mass at the Tevatron and LHC it is crucial that the theoretical predictions for the W and Z production processes are under control. We briefly summarize the status of the electroweak radiative corrections to [Formula: see text] and [Formula: see text], γ → l+l- (l = e, μ), and present some numerical results.

TOP AND HIGGS HUNTING VIA Mw AND Γz

1991 ◽  
Vol 06 (23) ◽  
pp. 2129-2135 ◽  
Author(s):  
ZENRŌ HIOKI
Keyword(s):  
Top Quark ◽  
Z Boson ◽  
W Boson ◽  
Parton Model ◽  
Boson Mass ◽  
Top Quark Mass ◽  
Total Decay Width ◽  
Model Calculations ◽  
Hadron Physics ◽  
Electroweak Radiative Corrections

Virtual top and Higgs effects are studied through the electroweak radiative corrections to the W boson mass, MW, and the total decay-width of the Z boson, ΓZ, by using the data [Formula: see text], [Formula: see text] and [Formula: see text]. Carrying out the χ2 fit in the framework of the standard electroweak theory, constraints are derived on the top-quark mass, mt, and the Higgs–boson mass, mϕ, which are almost free from the complicated hadron physics like parton model calculations. For example, [Formula: see text] for mϕ = 100 GeV (at 1σ level) while mϕ ≲ 680 GeV if mt ≤ 110 GeV and mϕ ≳ 280 GeV if mt ≥ 190 GeV . It is also studied how precise measurements of MW at LEP II improve these constraints.

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