Determination of AbFBusing jet charge measurements in Z decays

ALEPH Collaboration

doi:10.1016/S0370-2693(98)00345-1

Determination of A^b_FBusing jet charge measurements in Z decays

ALEPH Collaboration

Université Paris-Sud
University of São Paulo
University of Barcelona
INFN Sezione di Bari
INFN Sezione di Catania
Institute of High Energy Physics, Chinese Academy of Sciences
European Organization for Nuclear Research
University of Geneva
Cornell University College of Engineering
Harvard University
Université Blaise Pascal
Niels Bohr Institutet
NCSR Demokritos
University of Florence
Florida State University
LNF-INFN
University of Turin
Ev-K2-CNR Committee
University of Glasgow
University of Heidelberg
Imperial College London
University of Innsbruck
Lancaster University
Johannes Gutenberg University
University of Milano
Max-Planck-Institut für Physik
Laboratoire de l'Accélérateur Linéaire
Kangwon National University
University of Pisa
Dipartimento di Scienze Biomediche
King's College London
Rutherford Appleton Laboratory
Institut Pierre Simon Laplace, CNRS and CEA
University of California at Santa Cruz
The University of Sheffield
Universität Siegen
University of Trieste
University of Washington
University of Wisconsin-Madison
University of California, Los Angeles

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

18 Citations (Scopus)

Résumé

An improved measurement of the forward-backward asymmetry in Z → bb¯ decays is presented, based on a sample of 4.1 million hadronic Z decays collected by ALEPH between 1991 and 1995. Data are analysed as a function of polar angle of the event axis and b purity. The event tagging efficiency and mean b-jet hemisphere charge are measured directly from data. From the measured forward-backward jet charge asymmetry, the b quark asymmetry at √s = mZ is determined to be: AbAB = 0.1017 ± 0.0038(stat.) ± 0.0032(syst.) In the context of the Standard Model this corresponds to a value of the effective weak mixing angle of sin2θeffW = 0.23109 ± 0.00096.

langue originale	Anglais
Pages (de - à)	217-230
Nombre de pages	14
journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	426
Numéro de publication	1-2
Les DOIs	https://doi.org/10.1016/S0370-2693(98)00345-1
état	Publié - 30 avr. 1998

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10.1016/S0370-2693(98)00345-1

Contient cette citation

@article{97f1461881b1465cb89a2083c7b1ddfc,

title = "Determination of AbFBusing jet charge measurements in Z decays",

abstract = "An improved measurement of the forward-backward asymmetry in Z → bb¯ decays is presented, based on a sample of 4.1 million hadronic Z decays collected by ALEPH between 1991 and 1995. Data are analysed as a function of polar angle of the event axis and b purity. The event tagging efficiency and mean b-jet hemisphere charge are measured directly from data. From the measured forward-backward jet charge asymmetry, the b quark asymmetry at √s = mZ is determined to be: AbAB = 0.1017 ± 0.0038(stat.) ± 0.0032(syst.) In the context of the Standard Model this corresponds to a value of the effective weak mixing angle of sin2θeffW = 0.23109 ± 0.00096.",

author = "\{ALEPH Collaboration\} and R. Barate and D. Buskulic and D. Decamp and P. Ghez and C. Goy and Lees, \{J. P.\} and A. Lucotte and E. Merle and Minard, \{M. N.\} and Nief, \{J. Y.\} and B. Pietrzyk and R. Alemany and G. Boix and Casado, \{M. P.\} and M. Chmeissani and Crespo, \{J. M.\} and M. Delfino and E. Fernandez and M. Fernandez-Bosman and Ll Garrido and E. Graug{\`e}s and A. Juste and M. Martinez and G. Merino and R. Miquel and Mir, \{Ll M.\} and Park, \{I. C.\} and A. Pascual and Perlas, \{J. A.\} and I. Riu and F. Sanchez and A. Colaleo and D. Creanza and \{de Palma\}, M. and G. Gelao and G. Iaselli and G. Maggi and M. Maggi and S. Nuzzo and A. Ranieri and G. Raso and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and A. Tricomi and G. Zito and X. Huang and J. Lin and M. Verderi",

year = "1998",

month = apr,

day = "30",

doi = "10.1016/S0370-2693(98)00345-1",

language = "English",

volume = "426",

pages = "217--230",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Determination of AbFBusing jet charge measurements in Z decays

AU - ALEPH Collaboration

AU - Barate, R.

AU - Buskulic, D.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Lees, J. P.

AU - Lucotte, A.

AU - Merle, E.

AU - Minard, M. N.

AU - Nief, J. Y.

AU - Pietrzyk, B.

AU - Alemany, R.

AU - Boix, G.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, Ll

AU - Graugès, E.

AU - Juste, A.

AU - Martinez, M.

AU - Merino, G.

AU - Miquel, R.

AU - Mir, Ll M.

AU - Park, I. C.

AU - Pascual, A.

AU - Perlas, J. A.

AU - Riu, I.

AU - Sanchez, F.

AU - Colaleo, A.

AU - Creanza, D.

AU - de Palma, M.

AU - Gelao, G.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Tricomi, A.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Verderi, M.

PY - 1998/4/30

Y1 - 1998/4/30

N2 - An improved measurement of the forward-backward asymmetry in Z → bb¯ decays is presented, based on a sample of 4.1 million hadronic Z decays collected by ALEPH between 1991 and 1995. Data are analysed as a function of polar angle of the event axis and b purity. The event tagging efficiency and mean b-jet hemisphere charge are measured directly from data. From the measured forward-backward jet charge asymmetry, the b quark asymmetry at √s = mZ is determined to be: AbAB = 0.1017 ± 0.0038(stat.) ± 0.0032(syst.) In the context of the Standard Model this corresponds to a value of the effective weak mixing angle of sin2θeffW = 0.23109 ± 0.00096.

AB - An improved measurement of the forward-backward asymmetry in Z → bb¯ decays is presented, based on a sample of 4.1 million hadronic Z decays collected by ALEPH between 1991 and 1995. Data are analysed as a function of polar angle of the event axis and b purity. The event tagging efficiency and mean b-jet hemisphere charge are measured directly from data. From the measured forward-backward jet charge asymmetry, the b quark asymmetry at √s = mZ is determined to be: AbAB = 0.1017 ± 0.0038(stat.) ± 0.0032(syst.) In the context of the Standard Model this corresponds to a value of the effective weak mixing angle of sin2θeffW = 0.23109 ± 0.00096.

U2 - 10.1016/S0370-2693(98)00345-1

DO - 10.1016/S0370-2693(98)00345-1

M3 - Article

AN - SCOPUS:0039357741

SN - 0370-2693

VL - 426

SP - 217

EP - 230

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

Determination of AbFBusing jet charge measurements in Z decays

Résumé

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Contient cette citation

Determination of A^b_FBusing jet charge measurements in Z decays