Measurement of the absolute branching fraction for Lambda(+)(c) -> Lambda mu(+)nu(mu)

Z. Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, H. Löhner, J. G. Messchendorp, M. Tiemens, BESIII Collaboration

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    47 Citaten (Scopus)
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    We report the first measurement of the absolute branching fraction for Lambda(+)(c) -> Lambda mu(+)nu(mu).This measurement is based on a sample of e+e(-) annihilation data produced at a center-of-mass energy root s = 4.6 GeV, collected with the BESIII detector at the BEPCII storage rings. The sample corresponds to an integrated luminosity of 567 pb(-1). The branching fraction is determined to be B( Lambda(+)(c) -> Lambda mu(+)nu(mu)) = (3.49 +/- 0.46( stat) +/- 0.27( syst))%. In addition, we calculate the ratio B( Lambda(+)(c) -> Lambda mu(+)nu(mu))/B(Lambda(+)(c) -> Lambda e(+)nu(e) to be 0.96 +/- 0.16( stat) +/- 0.04( syst)
    Originele taal-2English
    Pagina's (van-tot)42-47
    Aantal pagina's6
    TijdschriftPhysics Letters B
    StatusPublished - 10-apr.-2017

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