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Measurement of Bs0 --> Ds(*)+ Ds(*)- Branching Ratios

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    SYSNO ASEP0388863
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleMeasurement of Bs0 --> Ds(*)+ Ds(*)- Branching Ratios
    Author(s) Aaltonen, T. (FI)
    Gonzalez, B.A. (ES)
    Amerio, S. (IT)
    Lysák, Roman (FZU-D) RID
    Number of authors475
    Source TitlePhysical Review Letters - ISSN 0031-9007
    Roč. 108, č. 20 (2012), "201801-1"-"201801-7"
    Number of pages7 s.
    Languageeng - English
    CountryUS - United States
    KeywordsBatavia TEVATRON ; B/s0 hadronic decay ; charmed meson pair production ; CDF
    Subject RIVBF - Elementary Particles and High Energy Physics
    R&D ProjectsLC527 GA MŠk - Ministry of Education, Youth and Sports (MEYS)
    CEZAV0Z10100502 - FZU-D (2005-2011)
    UT WOS000304063700002
    DOI10.1103/PhysRevLett.108.201801
    AnnotationThe decays Bs0 --> Ds(*)+ Ds(*)- are reconstructed in a data sample corresponding to an integrated luminosity of 6.8 fb-1 collected by the CDF II detector at the Tevatron p/bar{p} collider. All decay modes are observed with a significance of more than 10 sigma, and we measure the Bs0 production rate times Bs0 --> Ds(*)+ Ds(*)- branching ratios relative to the normalization mode B0 --> Ds+ D- to be $0.183 /pm 0.021 /pm 0.017$ for Bs0 --> Ds+ Ds-, $0.424 /pm 0.046 /pm 0.035$ for Bs0 --> Ds*+- Ds-+, $0.654 /pm 0.072 /pm 0.065$ for Bs0 --> Ds*+ Ds*-, and $1.261 /pm 0.095 /pm 0.112$ for the inclusive decay Bs0 --> Ds(*)+ Ds(*)-, where the uncertainties are statistical and systematic. These results are the most precise single measurements to date and provide important constraints for indirect searches for non-standard model physics in Bs0 mixing.
    WorkplaceInstitute of Physics
    ContactEva Pulcmanová, pulcman@fzu.cz, Tel.: 220 318 579 ; Kristina Potocká, potocka@fzu.cz
    Year of Publishing2013