The effective electroweak mixing angle sin2 theta(w)BAR is measured from the production and decay of the Z boson in e+ e-interactions. The data sample corresponds to an integrated luminosity of 18 pb-1 with about 420 000 hadronic and 40000 leptonic Z decays. The mixing angle sin2 theta(w)BAR is determined from several independent measurements: the leptonic and hadronic cross sections, the forward-backward asymmetries of charged leptons and b-quarks, and the tau-polarization. The results are found to be in good agreement with each other. The value of sin2 theta(w)BAR from a fit to the asymmetries in a model independent method is 0.2321+/-0.0021 and from a global fit to the data in the Standard Model framework is 0.2328+/-0.0013.

Determination of the Effective Electroweak Mixing Angle From Z-decays / Adriani, O., Aguilarbenitez, M., Ahlen, S., Alcaraz, J., Aloisio, A., Alverson, G., Alviggi, M., Ambrosi, G., An, Q., Anderhub, H., Anderson, A.L., Andreev, V.P., Antonov, L., Antreasyan, D., Arce, P., Arefiev, A., Atamanchuk, A., Azemoon, T., Aziz, T., P. V. K., ., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 309:(1993), pp. 451-462. [10.1016/0370-2693(93)90961-G]

Determination of the Effective Electroweak Mixing Angle From Z-decays

ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CHIEFARI, GIOVANNI;L. LISTA;MEROLA, LEONARDO;NAPOLITANO, MARCO;PATRICELLI, SERGIO;SCIACCA, CRISOSTOMO;
1993

Abstract

The effective electroweak mixing angle sin2 theta(w)BAR is measured from the production and decay of the Z boson in e+ e-interactions. The data sample corresponds to an integrated luminosity of 18 pb-1 with about 420 000 hadronic and 40000 leptonic Z decays. The mixing angle sin2 theta(w)BAR is determined from several independent measurements: the leptonic and hadronic cross sections, the forward-backward asymmetries of charged leptons and b-quarks, and the tau-polarization. The results are found to be in good agreement with each other. The value of sin2 theta(w)BAR from a fit to the asymmetries in a model independent method is 0.2321+/-0.0021 and from a global fit to the data in the Standard Model framework is 0.2328+/-0.0013.
1993
Determination of the Effective Electroweak Mixing Angle From Z-decays / Adriani, O., Aguilarbenitez, M., Ahlen, S., Alcaraz, J., Aloisio, A., Alverson, G., Alviggi, M., Ambrosi, G., An, Q., Anderhub, H., Anderson, A.L., Andreev, V.P., Antonov, L., Antreasyan, D., Arce, P., Arefiev, A., Atamanchuk, A., Azemoon, T., Aziz, T., P. V. K., ., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 309:(1993), pp. 451-462. [10.1016/0370-2693(93)90961-G]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/481284
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