Title
Measurement of lifetime and decay-width difference in <tex>$B_{s}^{0}\rightarrow J/\Psi\phi$</tex> decays Measurement of lifetime and decay-width difference in <tex>$B_{s}^{0}\rightarrow J/\Psi\phi$</tex> decays
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
New York, N.Y. ,
Subject
Physics
Source (journal)
Physical review letters. - New York, N.Y.
Volume/pages
100(2008) :12 , p. 121803,1-121803,7
ISSN
0031-9007
ISI
000254473800017
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We measure the mean lifetime τ=2/(ΓL+ΓH) and the decay-width difference ΔΓ=ΓL-ΓH of the light and heavy mass eigenstates of the Bs0 meson, BsL0 and BsH0, in Bs0→J/ψ&#981; decays using 1.7  fb-1 of data collected with the CDF II detector at the Fermilab Tevatron pp&#773; collider. Assuming CP conservation, a good approximation for the Bs0 system in the standard model, we obtain ΔΓ=0.076-0.063+0.059(stat)±0.006(syst)  ps-1 and τ=1.52±0.04(stat)±0.02(syst)  ps, the most precise measurements to date. Our constraints on the weak phase and ΔΓ are consistent with CP conservation.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/393a3d/409809d1.pdf
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