CERN Accelerating science

Article
Report number arXiv:2409.02759 ; LHCb-PAPER-2024-017 ; CERN-EP-2024-200
Title Measurement of Λb0, Λc+ and Λ decay parameters using Λb0Λc+h decays
Related titleMeasurement of Λb0, Λc+ and Λ decay parameters using Λb0Λc+h decays
Author(s) LHCb Collaboration  Vis alle 1137 forfattere
Corporate Author(s) LHCb Collaboration
Publication 2024-12-30
Imprint 06 Sep 2024
Number of pages 34
Note All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2024-017.html(LHCb public pages)
In: Phys. Rev. Lett. 133 (2024) 261804
DOI 10.1103/PhysRevLett.133.261804 (publication)
Subject category hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords electroweak interaction ; flavor physics ; QCD ; B physics ; charm physics ; polarization ; CP violation
Abstract A comprehensive study of the angular distributions in the bottom-baryon decays Λb0Λc+h(h=π,K), followed by Λc+Λh+ with Λpπ or Λc+pKS0 decays, is performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of 9 fb1 collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV. The decay parameters and the associated charge-parity (CP) asymmetries are measured, with no significant CP violation observed. For the first time, the Λb0Λc+h decay parameters are measured. The most precise measurements of the decay parameters α,β and γ are obtained for Λc+ decays and an independent measurement of the decay parameters for the strange-baryon Λ decay is provided. The results deepen our understanding of weak decay dynamics in baryon decays.
Copyright/License Preprint: © 2024-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: lhcb.secretariat@cern.ch


 Element opprettet 2024-09-06, sist endret 2025-01-04


Fulltekst:
Last ned fulltekst
PDF

(tilleggsfiler)
  • Send to ScienceWise.info