An Improved measurement of B0 - B0 mixing in ZOdecays

L3 Collab.

doi:10.1016/0370-2693(92)91119-t

Scientific article

English

An Improved measurement of B⁰ - B⁰ mixing in Z^Odecays

ContributorsL3 Collab.

CollaboratorsAmbrosi, Giovanni; Bourquin, Maurice; Rosier-Lees, Sylvie; Duchesneau, Dominique Robert; Extermann, Pierre; Field, John; Forconi, Gilles Raymond; Goujon, Didier; Kienzle, Maria Novella; Produit, Nicolas

Published inPhysics letters. B, vol. 288, no. 3-4, p. 395-403

Publication date1992

Abstract

A more precise determination of the B 0 - B 0 mixing parameter in Z 0 decays based on a fourfold increase in statistics has been made using the 1990 and 1991 L3 data. The analysis of the dilepton events, muons and electrons, gives: χ B = 0.121 ± 0.017 (stat) ± 0.006 (sys). Using the value of χ d measured at the γ(4S) we derive the following limit for χ s : χ s > 0.16 (90% CL).

Keywords

Electron positron: colliding beams
Colliding beams: electron positron
Electron positron: annihilation
Annihilation: electron positron
Z0: electroproduction
Electroproduction: Z0
Z0: nonleptonic decay
Nonleptonic decay: Z0
Bottom: pair production
Pair production: bottom
Bottom: semileptonic decay
Semileptonic decay: bottom
B0 anti-B0: mixing
Charge: dilepton
Momentum spectrum: dilepton
Longitudinal momentum: spectrum
Spectrum: longitudinal momentum
Transverse momentum: spectrum
Spectrum: transverse momentum
L3
Experimental results
CERN LEP Stor
88.2-94.2 GeV-cms
B/s: interference
S051CB

UNIGE affiliation entities

Faculté des sciences / Département d'astronomie

Citation (ISO format)

L3 Collab. An Improved measurement of B⁰ - B⁰ mixing in Z^Odecays. In: Physics letters. B, 1992, vol. 288, n° 3-4, p. 395–403. doi: 10.1016/0370-2693(92)91119-t

Article (Published version)

Identifiers

PID : unige:187345
DOI : 10.1016/0370-2693(92)91119-t

Additional URL for this publicationhttps://linkinghub.elsevier.com/retrieve/pii/037026939291119T

Journal ISSN0370-2693

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An Improved measurement of B0 - B0 mixing in ZOdecays

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An Improved measurement of B⁰ - B⁰ mixing in Z^Odecays