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

Evidence for an excited hyperon state in pp --> pK+Y0*.

I Zychor1, V Koptev, M Büscher

  • 1The Andrzej Sołtan Institute for Nuclear Studies, 05400 Swierk, Poland.

Physical Review Letters
|February 21, 2006
PubMed
Summary

Researchers observed a neutral excited hyperon (Y0*) in a proton-proton collision experiment. Its mass and width suggest it might be an exotic particle not predicted by current quark models.

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

First Experimental Limit on the Permanent Electric Dipole Moment of the Deuteron.

Physical review letters·2026
Same author

First Measurement of Time-Dependent CP Violation in the Flavor-Changing Neutral-Current Decay B^{0}→K_{S}^{0}μ^{+}μ^{-}.

Physical review letters·2026
Same author

Measurement of the Top-Quark Production Cross Section and Charge Asymmetry at LHCb.

Physical review letters·2026
Same author

Searches for B^{0}→K^{+}π^{-}τ^{+}τ^{-} and B_{s}^{0}→K^{+}K^{-}τ^{+}τ^{-} Decays.

Physical review letters·2026
Same author

First Evidence of the B_{s}^{0}→K^{-}π^{+}γ Decay.

Physical review letters·2026
Same author

Precision Measurement of CP Violation and Branching Fractions in B^{±}→K_{S}^{0}h^{±} (h=π, K) Decays and Search for the Rare Decay B_{c}^{±}→K_{S}^{0}K^{±}.

Physical review letters·2026

Area of Science:

  • Nuclear Physics
  • Particle Physics
  • Hadron Spectroscopy

Background:

  • Investigating the properties of excited hyperons is crucial for understanding baryon structure.
  • The existence of exotic particles beyond the Standard Model is a key area of research.

Purpose of the Study:

  • To search for and characterize a neutral excited hyperon (Y0*) produced in proton-proton collisions.
  • To determine the mass, width, and production cross-section of the observed Y0* state.

Main Methods:

  • Experiments were conducted using the ANKE spectrometer at COSY-Jülich with a proton beam at 3.65 GeV/c.
  • Two decay channels (Y0* --> pi+X- and pi-X+) were simultaneously analyzed for consistent results.

Main Results:

Related Experiment Videos

  • Evidence for a neutral excited hyperon (Y0*) was observed.
  • The determined parameters are M(Y0*) = (1480 +/-15) MeV/c2 and gamma(Y0*) = (60 +/- 15) MeV/c2.
  • The production cross-section is on the order of a few hundred nanobarns.

    • Conclusions:

    • The observed Y0* could be the sigma(1480) resonance or a lambda hyperon, but its isospin remains undetermined.
    • The Y0* state is not predicted by relativistic quark models, suggesting it may possess exotic properties.