Measurement of Bd                      0- Bd                      0oscillations

DELPHI Collaboration

doi:10.1007/s002880050582

Measurement of B_d ⁰- B_d ⁰oscillations

DELPHI Collaboration

Faculdade de Ciências, Universidade de Lisboa
Institut für Hochenergiephysik
CCLRC Rutherford Appleton Laboratory
NCSR Demokritos
Kurchatov Institute
Joint Institute for Nuclear Research, Dubna
University of Valencia
University of Liverpool
Lund University
European Organization for Nuclear Research
Instituto de Biofisica da UFRJ
Stockholm University
Universität Karlsruhe/Forschungszentrum Karlsruhe
Université Paris-Sud
IGFL, Université de Lyon, Université Lyon 1
Science Park 105
Université Paris-Saclay
Sezione di Roma
Helsinki Institute of Physics
Universités Paris VI and VII
Institut Pierre Simon Laplace, CNRS and CEA
Bergische Universität Gesamthochschule Wuppertal
Centro Brasileiro de Pesquisas Fisicas
Pontifícia Universidade Católica do Rio de Janeiro
Rua São Francisco de Xavier
IHEP Serpukhov
University of Bologna
University of Antwerp
Inter-University Institute for High Energies ULB-VUB
Université de Mons
University of Turin
University of Milano
University of Bergen
Uppsala University
University of Genoa
University of Padova
Institute for Nuclear Physics
University of Oslo
Instituto de Fisica de Cantabria (CSIC-UC)
University of Rome “Tor Vergata”
Comenius University
Department of Biochemistry and Molecular and Structural Biology
School of Environmental Sciences
University of Ljubljana
University of Trieste
and Physics University of Udine
Iowa State University
University of Oviedo
Niels Bohr Institutet
Aix Marseille Université
University of Oxford
University of Warsaw
National Technical University of Athens
University of Athens
Charles University
Inst. of Phys. of the C. A. S. High Energy Physics Division
Lancaster University

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

Résumé

B_d ⁰meson oscillations are measured in hadronic Z⁰decays using the charge of a lepton or the mean charge of an event hemisphere to sign the presence of a b or a b quark when it is produced, and using the charge of a lepton emitted at large p_tor of a D^∗±to sign the presence of a B or a B meson when it decays. With 3.2 million hadronic Z⁰decays registered by DELPHI between 1991 and 1994, the mass difference Δm_dbetween the two physical B_d ⁰states is measured in four channels: Δm_d= 0.523 ± 0.072 ± 0.043 ps^-1(D^∗±- Q_hem) Δm_d= 0.493 ± 0.042 ± 0.027 ps^-1(ℓ - Q_hem) Δm_d= 0.499 ± 0.053 ± 0.015 ps^-1((π^∗- ℓ) - Q_hem) Δm_d= 0.480 ± 0.040 ± 0.051 ps^-1(ℓ - ℓ). Taking into account the statistical overlap between these measurements and the common systematic uncertainties, the combined result is: Δm_d= 0.497 ± 0.035 ps^-1.

langue originale	Anglais
Pages (de - à)	579-598
Nombre de pages	20
journal	Zeitschrift fur Physik C-Particles and Fields
Volume	76
Numéro de publication	4
Les DOIs	https://doi.org/10.1007/s002880050582
état	Publié - 1 janv. 1997
Modification externe	Oui

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10.1007/s002880050582

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Contient cette citation

@article{1de4480def2a407ca25a54183ea83858,

title = "Measurement of Bd 0- Bd 0oscillations",

abstract = "Bd 0meson oscillations are measured in hadronic Z0decays using the charge of a lepton or the mean charge of an event hemisphere to sign the presence of a b or a b quark when it is produced, and using the charge of a lepton emitted at large ptor of a D∗±to sign the presence of a B or a B meson when it decays. With 3.2 million hadronic Z0decays registered by DELPHI between 1991 and 1994, the mass difference Δmdbetween the two physical Bd 0states is measured in four channels: Δmd= 0.523 ± 0.072 ± 0.043 ps-1(D∗±- Qhem) Δmd= 0.493 ± 0.042 ± 0.027 ps-1(ℓ - Qhem) Δmd= 0.499 ± 0.053 ± 0.015 ps-1((π∗- ℓ) - Qhem) Δmd= 0.480 ± 0.040 ± 0.051 ps-1(ℓ - ℓ). Taking into account the statistical overlap between these measurements and the common systematic uncertainties, the combined result is: Δmd= 0.497 ± 0.035 ps-1.",

author = "\{DELPHI Collaboration\} and P. Abreu and W. Adam and T. Adye and P. Adzic and I. Ajinenko and Alekseev, \{G. D.\} and R. Alemany and Allport, \{P. P.\} and S. Almehed and U. Amaldi and S. Amato and P. Andersson and A. Andreazza and P. Antilogus and Apel, \{W. D.\} and Y. Arnoud and B. {\AA}sman and Augustin, \{J. E.\} and A. Augustinus and P. Baillon and P. Bambade and F. Barao and M. Barbi and Bardin, \{D. Y.\} and G. Barker and A. Baroncelli and O. Barring and Bates, \{M. J.\} and M. Battaglia and M. Baubillier and J. Baudot and Becks, \{K. H.\} and M. Begalli and P. Beilliere and Yu Belokopytov and K. Belous and Benvenuti, \{A. C.\} and C. Berat and M. Berggren and D. Bertini and D. Bertrand and M. Besancon and F. Bianchi and M. Bigi and Bilenky, \{M. S.\} and P. Billoir and Bizouard, \{M. A.\} and D. Bloch and M. Blume and P. Paganini",

note = "Publisher Copyright: {\textcopyright} Springer-Verlag 1997.",

year = "1997",

month = jan,

day = "1",

doi = "10.1007/s002880050582",

language = "English",

volume = "76",

pages = "579--598",

journal = "Zeitschrift fur Physik C-Particles and Fields",

issn = "0170-9739",

number = "4",

}

TY - JOUR

T1 - Measurement of Bd 0- Bd 0oscillations

AU - DELPHI Collaboration

AU - Abreu, P.

AU - Adam, W.

AU - Adye, T.

AU - Adzic, P.

AU - Ajinenko, I.

AU - Alekseev, G. D.

AU - Alemany, R.

AU - Allport, P. P.

AU - Almehed, S.

AU - Amaldi, U.

AU - Amato, S.

AU - Andersson, P.

AU - Andreazza, A.

AU - Antilogus, P.

AU - Apel, W. D.

AU - Arnoud, Y.

AU - Åsman, B.

AU - Augustin, J. E.

AU - Augustinus, A.

AU - Baillon, P.

AU - Bambade, P.

AU - Barao, F.

AU - Barbi, M.

AU - Bardin, D. Y.

AU - Barker, G.

AU - Baroncelli, A.

AU - Barring, O.

AU - Bates, M. J.

AU - Battaglia, M.

AU - Baubillier, M.

AU - Baudot, J.

AU - Becks, K. H.

AU - Begalli, M.

AU - Beilliere, P.

AU - Belokopytov, Yu

AU - Belous, K.

AU - Benvenuti, A. C.

AU - Berat, C.

AU - Berggren, M.

AU - Bertini, D.

AU - Bertrand, D.

AU - Besancon, M.

AU - Bianchi, F.

AU - Bigi, M.

AU - Bilenky, M. S.

AU - Billoir, P.

AU - Bizouard, M. A.

AU - Bloch, D.

AU - Blume, M.

AU - Paganini, P.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Bd 0meson oscillations are measured in hadronic Z0decays using the charge of a lepton or the mean charge of an event hemisphere to sign the presence of a b or a b quark when it is produced, and using the charge of a lepton emitted at large ptor of a D∗±to sign the presence of a B or a B meson when it decays. With 3.2 million hadronic Z0decays registered by DELPHI between 1991 and 1994, the mass difference Δmdbetween the two physical Bd 0states is measured in four channels: Δmd= 0.523 ± 0.072 ± 0.043 ps-1(D∗±- Qhem) Δmd= 0.493 ± 0.042 ± 0.027 ps-1(ℓ - Qhem) Δmd= 0.499 ± 0.053 ± 0.015 ps-1((π∗- ℓ) - Qhem) Δmd= 0.480 ± 0.040 ± 0.051 ps-1(ℓ - ℓ). Taking into account the statistical overlap between these measurements and the common systematic uncertainties, the combined result is: Δmd= 0.497 ± 0.035 ps-1.

AB - Bd 0meson oscillations are measured in hadronic Z0decays using the charge of a lepton or the mean charge of an event hemisphere to sign the presence of a b or a b quark when it is produced, and using the charge of a lepton emitted at large ptor of a D∗±to sign the presence of a B or a B meson when it decays. With 3.2 million hadronic Z0decays registered by DELPHI between 1991 and 1994, the mass difference Δmdbetween the two physical Bd 0states is measured in four channels: Δmd= 0.523 ± 0.072 ± 0.043 ps-1(D∗±- Qhem) Δmd= 0.493 ± 0.042 ± 0.027 ps-1(ℓ - Qhem) Δmd= 0.499 ± 0.053 ± 0.015 ps-1((π∗- ℓ) - Qhem) Δmd= 0.480 ± 0.040 ± 0.051 ps-1(ℓ - ℓ). Taking into account the statistical overlap between these measurements and the common systematic uncertainties, the combined result is: Δmd= 0.497 ± 0.035 ps-1.

UR - https://www.scopus.com/pages/publications/84973547815

U2 - 10.1007/s002880050582

DO - 10.1007/s002880050582

M3 - Article

AN - SCOPUS:84973547815

SN - 0170-9739

VL - 76

SP - 579

EP - 598

JO - Zeitschrift fur Physik C-Particles and Fields

JF - Zeitschrift fur Physik C-Particles and Fields

IS - 4

ER -

Measurement of Bd 0- Bd 0oscillations

Résumé

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Measurement of B_d ⁰- B_d ⁰oscillations