Title
First observation of <tex>$\overline{B}_{s}^{0}\rightarrow D_{s}^{\pm}K^{\mp}$</tex> and measurement of the ratio of branching fractions <tex>$\mathcal{B}(\overline{B}_{s}^{0}\rightarrow D_{s}^{\pm}K^{\mp})/\mathcal{B}(\overline{B}_{s}^{0}\rightarrow D_{s}^{+}\pi^{-})$</tex> First observation of <tex>$\overline{B}_{s}^{0}\rightarrow D_{s}^{\pm}K^{\mp}$</tex> and measurement of the ratio of branching fractions <tex>$\mathcal{B}(\overline{B}_{s}^{0}\rightarrow D_{s}^{\pm}K^{\mp})/\mathcal{B}(\overline{B}_{s}^{0}\rightarrow D_{s}^{+}\pi^{-})$</tex>
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
103(2009) :19 , p. 191802,1-191802,7
ISSN
0031-9007
ISI
000271568200007
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A combined mass and particle identification fit is used to make the first observation of the decay B&#773; s0→Ds±K&#8723; and measure the branching fraction of B&#773; s0→Ds±K&#8723; relative to B&#773; s0→Ds+π-. This analysis uses 1.2  fb-1 integrated luminosity of pp&#773; collisions at √s=1.96  TeV collected with the CDF II detector at the Fermilab Tevatron collider. We observe a B&#773; s0→Ds±K&#8723; signal with a statistical significance of 8.1σ and measure B(B&#773; s0→Ds±K&#8723;)/B(B&#773; s0→Ds+π-)=0.097±0.018(stat)±0.009(syst).
Full text (open access)
https://repository.uantwerpen.be/docman/irua/a20eb3/8df6c5f5.pdf
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