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Titolo:
DISTRIBUTIONS IN 4-FERMION PROCESSES FOR W-PHYSICS AT LEP-2
Autore:
ACCOMANDO E; BALLESTRERO A; PASSARINO G;
Indirizzi:
UNIV TURIN,DIPARTIMENTO FIS TEOR,VIA P GIURIA 1 I-10125 TURIN ITALY IST NAZL FIS NUCL I-10125 TURIN ITALY
Titolo Testata:
Nuclear physics. B
fascicolo: 1-2, volume: 476, anno: 1996,
pagine: 3 - 26
SICI:
0550-3213(1996)476:1-2<3:DI4PFW>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRON-POSITRON COLLISIONS; GAUGE-INVARIANCE; HIGGS SIGNAL; 4-FERMION PRODUCTION; NLC ENERGIES; 4 FERMIONS; COLLIDERS; GENERATOR; ALGORITHM; PARTICLES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
46
Recensione:
Indirizzi per estratti:
Citazione:
E. Accomando et al., "DISTRIBUTIONS IN 4-FERMION PROCESSES FOR W-PHYSICS AT LEP-2", Nuclear physics. B, 476(1-2), 1996, pp. 3-26

Abstract

The programs WPHACT and WTO, which are designed for computing cross sections and other relevant observables in the e(+)e(-) annihilation into four fermions, are used to make detailed and complete predictions for the semi-leptonic and fully hadronic channels e(+)e(-) --> <(q)overbar qlv>,<(q)over bar q><(q)over bar q>. Both the total cross sections in the LEP 2 energy range and some of the most relevant distributions are analyzed. Particular algorithms are introduced for the fully hadronic channels in order to analyze the WW physics and to properly define the signal versus the background. With appropriate kinematical cutsit has been shown that the neutral-current background can be made vanishingly small when the problem of determining the W-boson mass is addressed. The remaining background from the complete charge-current and mixed processes is again small but not completely negligible. A detailed discussion is performed on the validity of the most relevant approximations such as the double-resonant one. The inclusion of a final state QCD correction, in its naive form (NQCD), is discussed and various implementations are examined.

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Documento generato il 30/11/20 alle ore 18:58:00