An Improved measurement of B0 - B0 mixing in ZOdecays

Article Article scientifique Article An Improved measurement of B0 - B0 mixing in ZOdecays eng 1992 L3 Collab. collaborator Ambrosi Giovanni INFN, Perugia 109903 collaborator Bourquin Maurice Alabama U. 25314 Administration de la faculté des sciences (SIAD) collaborator Rosier-Lees Sylvie Geneva U. 700032 collaborator Duchesneau Dominique Robert 24550 collaborator Extermann Pierre 24878 collaborator Field John 22832 collaborator Forconi Gilles Raymond 23910 collaborator Goujon Didier 24203 collaborator Kienzle Maria Novella 25120 Maria-Novella Kienzle collaborator Produit Nicolas 0000-0001-7138-7677 22959 Département d'astronomie (ASTRO) 395-403 10.1016/0370-2693(92)91119-t 0370-2693 https://linkinghub.elsevier.com/retrieve/pii/037026939291119T 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). 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 Dewey 520 26 Département d'astronomie 12 false Physics letters. B 288 3-4 51e17e62-18f1-4854-a3b9-410529ad9372 Article (Published version) Restricted Article_scientifique_from_unpaywall.pdf 624435 application/pdf b15c49a6c33b964e25a7f1657d5a7b3ffbdd1bb6f951c3023544af64a45b539e restrictedAccess Faculté des sciences / Département d'astronomie

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An Improved measurement of B⁰ - B⁰ mixing in Z^Odecays	Physics letters. B			1992	14	0

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Rosier-Lees, Sylvie