Measurement of branching fractions and CP asymmetries in Λ b 0 Ξ b 0 → p K S 0 h − decays
Name
13130_2025_Article_27461.pdf
Size
1.25 MB
Format
Adobe PDF
Checksum (MD5)
bb04bb65aa6f244c67d2bfa2ccb65a03
Author(s)
Aaij, R.
Abdelmotteleb, A. S. W.
Abellan Beteta, C.
Abudinén, F.
Ackernley, T.
Adefisoye, A. A.
Adeva, B.
Adinolfi, M.
Adlarson, P.
Agapopoulou, C.
Date Issued
October 21, 2025
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
The LHCb collaboration., Aaij, R., Abdelmotteleb, A.S.W. et al. Measurement of branching fractions and CP asymmetries in Λ b 0 Ξ b 0 → p K S 0 h − decays. J. High Energ. Phys. 2025, 169 (2025).
Version
Final published version
Abstract
A study of Λ b 0 and Ξ b 0 baryon decays to the final states p K S 0 π − and p K S 0 K − is performed using pp collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. The decays Λ b 0 → p K S 0 K − and Ξ b 0 → p K S 0 K − are observed for the first time, with significances reaching eight standard deviations. The branching fractions and integrated CP asymmetries are measured for the Λ b 0 → p K S 0 π − , Λ b 0 → p K S 0 K − , and Ξ b 0 → p K S 0 K − decays. For the decay Λ b 0 → p K S 0 π − , the CP asymmetries are measured in different regions of the Dalitz plot. No evidence of CP violation is observed.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP10(2025)169
