Measurement of the ratio of cross sections for neutrino and antineutrino scattering from electrons

Measurements of the ratio R of the purely leptonic weak neutral-current cross sections sigma(..nu../sub ..mu../e..--> nu../sub ..mu../e)/sigma(nu-bar/sub ..mu../e..-->..nu-bar /sub ..mu../e) and of the absolute value of sigma(nu-bar/sub ..mu../e..-->..nu-bar/sub ..mu../e) are reported. Thes...

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Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1985-01, Vol.54 (1), p.18-21
Hauptverfasser:	Ahrens, LA, Aronson, SH, Connolly, PL, Gibbard, BG, Murtagh, MJ, Murtagh, S, Terada, S, White, DH, Callas, JL, Cutts, D, Hoftun, JS, Lanou, RE, Shinkawa, T, Amako, K, Kabe, S, Nagashima, Y, Suzuki, Y, Tatsumi, S, Abe, K, Beier, EW, Doughty, DC, Durkin, LS, Heagy, SM, Hurley, M, Mann, AK, Newcomer, FM, Williams, HH, York, T, Hedin, D, Marx, MD, Stern, E
Format:	Artikel
Sprache:	eng
Schlagworte:	ANTI 645102 > High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties ANTILEPTONS ANTIMATTER ANTINEUTRINOS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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Zusammenfassung:	Measurements of the ratio R of the purely leptonic weak neutral-current cross sections sigma(..nu../sub ..mu../e..--> nu../sub ..mu../e)/sigma(nu-bar/sub ..mu../e..-->..nu-bar /sub ..mu../e) and of the absolute value of sigma(nu-bar/sub ..mu../e..-->..nu-bar/sub ..mu../e) are reported. These yield R = 1.38/sub -0.31//sup +0.40/(stat) +- 0.17(syst) and sigma(nu-bar/sub ..mu../e..-->..nu-bar/sub ..mu../e)/E..mu.. = (1.16 +- 0.20(stat) +- 0.14(syst)) x 10/sup -42/ cm/sup 2//GeV. This value of R determines the fundamental weak neutral-current parameter to be sin/sup 2/theta/sub W/ = 0.209 +- 0.029(stat) +- 0.013(syst).
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.54.18