scholarly journals The Differential cross section distribution of Drell-Yan dielectron pairs in the z boson mass region

2008 ◽  
Author(s):  
Jiyeon Han
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Z Boson ◽  
Mass Region ◽  
Boson Mass ◽  
Cross Section Distribution

TESTING SOME PROPERTIES OF NEUTRAL CURRENT NEUTRINO INTERACTIONS IN NEUTRINO COUNTING REACTION

1988 ◽  
Vol 03 (03) ◽  
pp. 721-729 ◽  
Author(s):  
P. RAM BABU
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Z Boson ◽  
Neutral Current ◽  
Z Bosons ◽  
Coupling Constant ◽  
Neutral Currents ◽  
Lorentz Structure ◽  
Neutrino Interactions

We have considered the ‘neutrino counting’ reaction [Formula: see text]. We restrict to V, A Lorentz structure of weak neutral interaction (WNI), allow many Z bosons to mediate WNI and νi to be different from νj. We derive the expression for differential cross section by allowing the polarizations of e+ and e− but summing over the polarizations of final photons. From the study of differential cross section with polarized and unpolarized beams three different coupling constant combinations can be determined. A definite relation between these observables and the observables in [Formula: see text] scatterings is suggested as a test of single-Z-boson hypothesis. Similarly another test relates observables in [Formula: see text] to those of [Formula: see text] scatterings. By assuming universality a test for presence of nondiagonal neutrino neutral currents (NDνNC’s) is also pointed out. The effects of presence of wrong-handed (anti-) neutrinos on our tests are also discussed. As a by-product, we find a way to determine number of neutrino types, in the case i≠j, assuming universality.

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 Optimal one-parameter observables for the Abelian Z′ in e+e-→μ+μ- process

2014 ◽  
Vol 29 (27) ◽  
pp. 1450161 ◽  
Author(s):  
Alexey Gulov
Keyword(s):  
Data Analysis ◽  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Z Boson ◽  
Statistical Power ◽  
Axial Vector ◽  
Weight Functions ◽  
Best Value ◽  
Lepton Colliders

To detect off-shell Abelian Z′ boson in e+e-→μ+μ-, we propose one-parameter observables with the best value-to-uncertainty ratio. The observables are constructed by angular integration of the differential cross-section with smooth weight functions. The value-to-uncertainty ratio is used as a criterion to select the unique weight function leading to the observable with the best statistical power for data analysis. The observables allow to select either vector or axial-vector Z′ couplings to leptons. The obtained observable can be useful in future experiments at lepton colliders such as the ILC.

Energy unresolved differential cross section for electron scattering by H2

1982 ◽  
Vol 77 (3) ◽  
pp. 1323-1334 ◽  
Author(s):  
Wl/odzimierz Kol/os ◽  
Hendrik J. Monkhorst ◽  
Krzysztof Szalewicz
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Electron Scattering ◽  
Differential Cross
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