The measurements of R(b) = sigma(e(+)e(-) --> b (b) over bar)/sigma(e(+)e(-) --> q (q) over bar) and of the b quark forward-backward charge asymmetry, A(fb)(b), at centre-of-mass energies above the Z pole an described. The measurement of R(b) is performed at root s between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons, The measurement of A(fb)(b) is performed using the large statistics event sample collected at root s = 189 GeV with a lepton-tag analysis based on the selection of prompt muons and electrons. The results at root s = 189 GeV are R(b) = 0.163 +/- 0.013 (stat.) +/- 0.005 (syst.), A(fb)(b) = 0.61 +/- 0.18 (stat.) +/- 0.09 (syst.). (C) 2000 Elsevier Science B.V, All rights reserved.

Measurements of the b(b)over-bar production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP / Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M., Ambrosi, G., Anderhub, H., Andreev, V.P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, L., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 485:(2000), pp. 71-84. [10.1016/S0370-2693(00)00676-6]

Measurements of the b(b)over-bar production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP

ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CHIEFARI, GIOVANNI;DELLA VOLPE, DOMENICO;L. Lista;MEROLA, LEONARDO;NAPOLITANO, MARCO;PATRICELLI, SERGIO;SCIACCA, CRISOSTOMO;
2000

Abstract

The measurements of R(b) = sigma(e(+)e(-) --> b (b) over bar)/sigma(e(+)e(-) --> q (q) over bar) and of the b quark forward-backward charge asymmetry, A(fb)(b), at centre-of-mass energies above the Z pole an described. The measurement of R(b) is performed at root s between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons, The measurement of A(fb)(b) is performed using the large statistics event sample collected at root s = 189 GeV with a lepton-tag analysis based on the selection of prompt muons and electrons. The results at root s = 189 GeV are R(b) = 0.163 +/- 0.013 (stat.) +/- 0.005 (syst.), A(fb)(b) = 0.61 +/- 0.18 (stat.) +/- 0.09 (syst.). (C) 2000 Elsevier Science B.V, All rights reserved.
2000
Measurements of the b(b)over-bar production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP / Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M., Ambrosi, G., Anderhub, H., Andreev, V.P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, L., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 485:(2000), pp. 71-84. [10.1016/S0370-2693(00)00676-6]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/473652
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