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Λc⁺ → p K⁻ π⁺

  • Common Partial Wave Analysis
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Table of contents

  • 1. Default amplitude model
  • 2. Cross-check with LHCb data
  • 3. Intensity distribution
  • 4. Polarimeter vector field
  • 5. Uncertainties
  • 6. Average polarimeter per resonance
  • 7. Appendix
    • 7.1. Dynamics lineshapes
    • 7.2. DPD angles
    • 7.3. Phase space sample
    • 7.4. Alignment consistency
    • 7.5. Benchmarking
    • 7.6. Polarimeter field serialization
    • 7.7. Model serialization
    • 7.8. Amplitude model with LS-couplings
    • 7.9. PC and PV currents
    • 7.10. SU(2) → SO(3) homomorphism
    • 7.11. Determination of polarization
    • 7.12. Interactive visualization
  • 8. Bibliography
  • 9. API
    • 9.1. lhcb
      • 9.1.1. dynamics
      • 9.1.2. particle
      • 9.1.3. symbol
    • 9.2. data
    • 9.3. function
    • 9.4. io
    • 9.5. plot

External links

  • JHEP
  • arXiv:2301.07010
  • ComPWA Project
  • GitHub repository
  • CERN GitLab (archived)
  • Repository
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dynamics

Contents

  • formulate_bugg_breit_wigner()
  • formulate_exponential_bugg_breit_wigner()
  • formulate_flatte_1405()
  • formulate_breit_wigner()

9.1.1. dynamics#

import polarimetry.lhcb.dynamics

Dynamics lineshape definitions for the LHCb amplitude model.

formulate_bugg_breit_wigner(decay_chain: ThreeBodyDecayChain) → DefinedExpression[source]#
formulate_exponential_bugg_breit_wigner(decay_chain: ThreeBodyDecayChain) → DefinedExpression[source]#

See this paper, Eq. (4).

formulate_flatte_1405(decay_chain: ThreeBodyDecayChain) → DefinedExpression[source]#
formulate_breit_wigner(decay_chain: ThreeBodyDecayChain) → DefinedExpression[source]#

previous

9.1. lhcb

next

9.1.2. particle

Contents
  • formulate_bugg_breit_wigner()
  • formulate_exponential_bugg_breit_wigner()
  • formulate_flatte_1405()
  • formulate_breit_wigner()

By Mikhail Mikhasenko, Remco de Boer, Miriam Fritsch

© Copyright 2023.

Last updated on 13 April 2026.