منابع مشابه
Precise Electroweak Results from LEP2
The high luminosity delivered by LEP after the doubling of the e+e− collision energy means that LEP2 is now providing substantial samples of W bosons with which tomake complementary tests of the Standard Model to those of LEP1. This, together with collision energies in excess of 200 GeV, is ensuring that the three central physics goals of the LEP2 program are properly explored: the precise meas...
متن کاملElectroweak Physics at Lep2
The measurements resulting from the analysis of the LEP2 data have brought more strong evidence in support of the standard electroweak model. In particular the LEP2 data has revealed (i) the first determination of the SU(2) gauge bosons self-couplings, (ii) the first direct measurements of the W decay-couplings, and (iii) the current best direct measurement of the W mass.
متن کاملRecent LEP2 Results from OPAL
In 1996, after another set of upgrades, LEP began running for the first time at center-of-mass energies above the W-pair threshold. This new energy regime offers a wide array of physics topics including tests of the Standard Model at higher energy scales, search physics, and W physics. We summarize the recent results from OPAL using 9.9 pb −1 of data collected at √ s = 161.3 GeV from June to Au...
متن کاملStandard Model Physics Results from LEP2
At LEP2 many Standard Model predictions are tested up to centreof-mass energies of 209 GeV . Fermion pair production cross sections and asymmetries agree well with the theoretical expectation over the entire energy range. The measurements are used to determine the γ/Z interference and to search for contact interactions up to 20 TeV. The cross sections for single-W, ZZ and WW production agree we...
متن کاملELECTROWEAK RESULTS FROM NUTEVNuTeV
We report our measurement of the weak mixing angle, sin 2 W , in neutrino{nucleon deep inelastic scattering in the NuTeV experiment at Fermilab. Using separate neutrino and anti-neutrino beams we are able to use the Paschos-Wolfenstein relations to extract sin 2 W with low systematic errors. Our preliminary result is sin 2 W (on?shell) 1 ? m 2 W =m 2 Z = 0:22530:0019(stat)0:0010(syst), which in...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 2000
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x0000522x