Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Measurement of decay parameters for Xi- --> Lambda pi- decay.

A Chakravorty1, H T Diehl, J Duryea

  • 1Physics Division, Illinois Institute of Technology, Chicago, Illinois 60616, USA.

Physical Review Letters
|August 9, 2003
PubMed
Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Inclusive Search for Anomalous Single-Photon Production in MicroBooNE.

Physical review letters·2026
Same author

Bouldering-related trauma: Injury patterns and operative burden over 10 years at a UK major trauma centre.

Injury·2026
Same author

Dual-action antibacterial mechanism of a ferrocene-pyrazoline hybrid: Michael acceptor electrophilicity and redox-active nonclassical bonding.

Biophysical chemistry·2026
Same author

First Search for Dark Sector e^{+}e^{-} Explanations of the MiniBooNE Anomaly at MicroBooNE.

Physical review letters·2026
Same author

Inter- and intra-rater reliability of two aquatic safety skill assessment tools.

JSAMS plus·2026
Same author

NeoHebbian synapses to accelerate online training of neuromorphic hardware.

Scientific reports·2026

Researchers measured the phi(Xi) parameter in Xi-hyperon decay, yielding a precise value. This study also determined the strong phase difference, improving estimates of CP violation in hyperon decays.

Area of Science:

  • Particle Physics
  • Hyperon Decays
  • Quantum Chromodynamics

Background:

  • Understanding CP violation is crucial for explaining matter-antimatter asymmetry.
  • Xi-hyperons provide a unique system to study CP violation due to their complex decay modes.

Purpose of the Study:

  • To precisely measure the phi(Xi) parameter in the Xi(-) to Lambda pi(-) decay.
  • To determine the strong phase difference between P-wave and S-wave amplitudes in the Lambda pi final state.
  • To reduce uncertainties in the estimation of CP violation in Xi-hyperon decays.

Main Methods:

  • Analysis of 1.35 x 10^6 polarized Xi(-) decay events.
  • Measurement of decay parameters using statistical analysis techniques.
  • Application of theoretical assumptions regarding CP-violating phase differences.

Related Experiment Videos

Main Results:

  • The phi(Xi) parameter was measured to be -1.61° ± 2.66° ± 0.37°.
  • New results for beta(Xi) and gamma(Xi) parameters were obtained.
  • The strong phase difference was deduced to be 3.17° ± 5.28° ± 0.73°.

Conclusions:

  • The study provides a more precise determination of key parameters in Xi-hyperon decay.
  • Reduced uncertainty in the strong phase difference contributes to a better understanding of CP violation.
  • These findings advance the study of fundamental symmetries in particle physics.