The cross-section ratio of neutral-current and charged-current semileptonic interactions of muon-neutrinos on isoscalar nuclei has been measured with the result:R v =0.3093±0.0031 for hadronic energy larger than 4 GeV. From this ratio we determined the electroweak mixing angle sin2 theta W , wherem c is the charm-quark mass in GeV/c2. Comparison with direct measurements ofm w andm z determines the radiative shift of the intermediate boson mass Deltar=0.077±0.025(exp.)±0.038(syst.), in agreement with the prediction. Assuming the validity of the electroweak standard theory we determined rhov=0.990–0.013(m c –1.5)±0.009(exp.)±0.003(theor.).

A precise determination of the electroweak mixing angle from semileptonic neutrino scattering / J. V., Allaby; U., Amaldi; G., Barbiellini; M., Baubillier; F., Bergsma; Capone, Antonio; W., Flegel; F., Grancagnolo; L., Lanceri; M., Metcalf; C., Nieuwenhuis; R., Pain; J., Panman; R., Plunckett; K., Winter; I., Abt; J., Aspiazu; A., Bungener; F. W., Büsser; P. D., Gall; T., Hebbeker; F., Niebergall; P., Schütt; P., Stähelin; P., Gorbunov; E., Grigoriev; V., Khovansky; A., Rosanov; A., Baroncelli; Barone, Luciano Maria; Borgia, Bruno; C., Bosio; M., Diemoz; C., Dionisi; Dore, Ubaldo; Ferroni, Fernando; Longo, Egidio; Loverre, Pier Ferruccio; L., Luminari; P., Monacelli; S., Morganti; F., Notaristefani; C., Santoni; L., Tortora; V., Valente. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 36:(1987), pp. 611-628. [10.1007/BF01630598]

A precise determination of the electroweak mixing angle from semileptonic neutrino scattering

CAPONE, Antonio;BARONE, Luciano Maria;BORGIA, BRUNO;DORE, Ubaldo;FERRONI, Fernando;LONGO, Egidio;LOVERRE, Pier Ferruccio;
1987

Abstract

The cross-section ratio of neutral-current and charged-current semileptonic interactions of muon-neutrinos on isoscalar nuclei has been measured with the result:R v =0.3093±0.0031 for hadronic energy larger than 4 GeV. From this ratio we determined the electroweak mixing angle sin2 theta W , wherem c is the charm-quark mass in GeV/c2. Comparison with direct measurements ofm w andm z determines the radiative shift of the intermediate boson mass Deltar=0.077±0.025(exp.)±0.038(syst.), in agreement with the prediction. Assuming the validity of the electroweak standard theory we determined rhov=0.990–0.013(m c –1.5)±0.009(exp.)±0.003(theor.).
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11573/403307
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