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http://hdl.handle.net/11452/34386
Başlık: | Measurement of the absolute branching fraction of the inclusive semileptonic lambda(+)(c) decay |
Yazarlar: | Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü. Tapan, İlhan 8905787000 |
Anahtar kelimeler: | Physics Atomic physics A-center Absolute branching fractions Data sample Integrated luminosity Semileptonic decay Germanium compounds |
Yayın Tarihi: | 18-Ara-2018 |
Yayıncı: | Amer Phyical |
Atıf: | Ablikim, M. vd. (2018). ''Measurement of the absolute branching fraction of the inclusive semileptonic lambda(+)(c) decay''. Physical Review Letters, 121(25). |
Özet: | Using a data sample of e(+)e(-) collisions corresponding to an integrated luminosity of 567 pb(-1) collected at a center-of-mass energy of root s = 4.6 GeV with the BESIII detector, we measure the absolute branching fraction of the inclusive semileptonic Lambda(+)(c) decay with a double-tag method. We obtain B(Lambda(+)(c) -> Xe+nu(e)) = (3.95 +/- 0.34 +/- 0.09)%, where the first uncertainty is statistical and the second systematic. Using the known Lambda(+)(c) lifetime and the charge-averaged semileptonic decay width of nonstrange charmed mesons (D-0 and D+), we obtain the ratio of the inclusive semileptonic decay widths Gamma(Lambda(+)(c) -> Xe+nu(e))/(Gamma) over bar (D -> Xe+nu(e)) = 1.26 +/- 0.12. |
URI: | https://doi.org/10.1103/PhysRevLett.121.251801 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.251801 http://hdl.handle.net/11452/34386 |
ISSN: | 0031-9007 1079-7114 |
Koleksiyonlarda Görünür: | Scopus Web of Science |
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