Study of beauty hadron decays into Pairs of charm hadrons
- R. Aaij,
- A. Abba,
- B. Adeva,
- M. Adinolfi,
- A. Affolder,
- Z. Ajaltouni
- National Institute for Subatomic Physics,
- Istituto Nazionale Di Fisica Nucleare, Frascati,
- Polytechnic University of Milan,
- University of Santiago de Compostela,
- University of Bristol,
- University of Liverpool
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Abstract
First observations of the decays Λ 0 b → Λ c+D - (s) are reported using data corresponding to an integrated luminosity of 3 fb -1 collected at 7 and 8 TeV center-of-mass energies in proton-proton collisions with the LHCb detector. In addition, the most precise measurement of the branching fraction B(B 0 s → D +D - s) is made and a search is performed for the decays B 0 (s) → Λ c +Λ c -. The results obtained are (Equastion presented) Measurement of the mass of the Λ 0 b baryon relative to the B¯ 0 meson gives M(Λ 0 b) - M(B¯ 0) = 339.72±0.24(stat) ± 0.18(syst) MeV=c 2. This result provides the most precise measurement of the mass of the Λ b 0 baryon to date.
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EnglishArticle number
202001Journal (Volume, Issue Number)
Physical Review Letters (Volume 112, Issue 20)Publication milestones
- Published - 21/05/2014
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0031-9007Publication IDs
- Scopus: 84937644642