Measurement of the Bs0-Bs0 Oscillation Frequency

CDF Collaboration

doi:10.1103/PhysRevLett.97.062003

Scientific article

English

Measurement of the B_s⁰-B_s⁰ Oscillation Frequency

Contributors

CDF Collaboration

Collaborators

Campanelli, Mario; Clark, Allan Geoffrey; Donega, Mauro; Lister, Alison; Vallecorsa, Sofia; Wu, Xin

Published in

Physical review letters, vol. 97, no. 06, 062003

Publication date

2006

Abstract

We present the first precise measurement of the B0s-B0s oscillation frequency Δms. We use 1 fb−1 of data from pp collisions at s√=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. The sample contains signals of 3600 fully reconstructed hadronic Bs decays and 37 000 partially reconstructed semileptonic Bs decays. We measure the probability as a function of proper decay time that the Bs decays with the same, or opposite, flavor as the flavor at production, and we find a signal consistent with B0s-B0s oscillations. The probability that random fluctuations could produce a comparable signal is 0.2%. Under the hypothesis that the signal is due to B0s-B0s oscillations, we measure Δms=17.31+0.33−0.18(stat)±0.07(syst) ps−1 and determine |Vtd/Vts|=0.208+0.001−0.002(expt)+0.008−0.006(theor).

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

CDF Collaboration. Measurement of the B_s⁰-B_s⁰ Oscillation Frequency. In: Physical review letters, 2006, vol. 97, n° 06, p. 062003. doi: 10.1103/PhysRevLett.97.062003

Article (Published version)

Identifiers

PID : unige:38366
DOI : 10.1103/PhysRevLett.97.062003

Additional URL for this publication

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.97.062003

Journal ISSN

0031-9007

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