First measurements of hyperon time-like form factors at large Q 2 and evidence of diquark correlations

Sean A Dobbs*, Amiran Tomaradze, T. Xiao, Kamal K Seth

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Using e+e- annihilation data taken with the CLEO-c detector at s = 3770 MeV and 4170 MeV, we report the first measurements of the electromagnetic form factors of the Λ0, Σ0, Σ+, Ξ0, Ξ-, and Ω- hyperons for the large timelike momentum transfers of |Q2| = 14.2 GeV2 and 17.4 GeV2, respectively. The enhancement in Λ0 production over that of Σ0, both of which have the same uds quark content, gives evidence for significant diquark correlations in these hyperons. Improved measurements of the branching fractions of ψ(2S) to hyperon-antihyperon pairs are also reported.

Original languageEnglish (US)
Title of host publicationXVIth International Conference on Hadron Spectroscopy, Hadron 2015
EditorsMichael R. Pennington
PublisherAmerican Institute of Physics Inc.
Volume1735
ISBN (Electronic)9780735413894
DOIs
StatePublished - May 25 2016
Event16th International Conference on Hadron Spectroscopy, Hadron 2015 - Newport News, United States
Duration: Sep 13 2015Sep 18 2015

Other

Other16th International Conference on Hadron Spectroscopy, Hadron 2015
CountryUnited States
CityNewport News
Period9/13/159/18/15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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