Cross-sections and leptonic forward-backward asymmetries from the Z0 running of LEP

Επιστημονική δημοσίευση - Άρθρο Περιοδικού uoadl:3037896 45 Αναγνώσεις

Μονάδα:
Ερευνητικό υλικό ΕΚΠΑ
Τίτλος:
Cross-sections and leptonic forward-backward asymmetries from the Z0 running of LEP
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
During 1993 and 1995 LEP was run at 3 energies near the Z0 peak in order to give improved measurements of the mass and width of the resonance. During 1994, LEP operated only at the Z0 peak. In total DELPHI accumulated data corresponding to an integrated luminosity of approximately 116 pb-1. Analyses of the hadronic cross-sections and of the cross-sections and forward-backward asymmetries in the leptonic channels used the most precise evaluations of the LEP energies. In the dimuon channel, events with a photon radiated from the initial state have been used to probe the cross-sections and asymmetries down to PETRA energies. Model independent fits to all DELPHI lineshape and asymmetry data from 1990 to 1995 have been carried out giving values of the resonance parameters: MZ = 91.1863 ± 0.0028 GeV ΓZ = 2.4876 ± 0.0041 GeV σ0 = 41.578 ± 0.069 nb R1 = 20.730 ± 0.060 AFB0 = 0.0187 ± 0.0019. These values are significantly more precise than those previously published. The results are interpreted in terms of the Standard Model.
Έτος δημοσίευσης:
2000
Συγγραφείς:
Abreu, P.
Adam, W.
Adye, T.
Adzic, P.
Alekseev, G.D.
Alemany, R.
Allport, P.P.
Almehed, S.
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Amato, S.
Anassontzis, E.G.
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Augustin, J.-E.
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Bigi, M.
Bilenky, M.S.
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Bloch, D.
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Borgland, A.W.
Borisov, G.
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Περιοδικό:
The European Physical Journal C - Particles and Fields
Εκδότης:
Springer New York LLC
Τόμος:
16
Αριθμός / τεύχος:
3
Σελίδες:
371-405
Επίσημο URL (Εκδότης):
DOI:
10.1007/s100520000392
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