First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c +
Name
PhysRevD.102.071101.pdf
Description
Published version
Size
343.62 KB
Format
Adobe PDF
Checksum (MD5)
e11a58e614090d268a8d103c7ca8d8e0
Author(s)
Williams, Michael
Date Issued
2020
Journal
Physical Review D
Publisher
American Physical Society (APS)
Citation
Williams, Michael. 2020. "First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c +." Physical Review D, 102 (7).
Version
Final published version
Abstract
© 2020 CERN. The Ξc0 baryon is unstable and usually decays into charmless final states by the c→sud¯ transition. It can, however, also disintegrate into a π- meson and a Λc+ baryon via s quark decay or via cs→dc weak scattering. The interplay between the latter two processes governs the size of the branching fraction B(Ξc0→π-Λc+), first measured here to be (0.55±0.02±0.18)%, where the first uncertainty is statistical and second systematic. This result is compatible with the larger of the theoretical predictions that connect models of hyperon decays using partially conserved axial currents and SU(3) symmetry with those involving the heavy-quark expansion and heavy-quark symmetry. In addition, the branching fraction of the normalization channel, B(Ξc+→pK-π+)=(1.135±0.002±0.387)% is measured.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PHYSREVD.102.071101
