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Hadronic structure functions in the e(+) e(-) -> (Lambda)over-bar Lambda reaction
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.ORCID iD: 0000-0003-4937-2270
2017 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 772, p. 16-20Article in journal (Refereed) Published
Abstract [en]

Cross-section distributions are calculated for the reaction e(+)e(-) -> J/psi -> (Lambda) over bar(-> (p) over bar pi(+)) Lambda(-> p pi(-)), and related annihilation reactions mediated by vector mesons. The hyperon-decay distributions depend on a number of structure functions that are bilinear in the, possibly complex, psionic form factors G(M)(psi) and G(E)(psi) of the Lambda hyperon. The relative size and relative phase of these form factors can be uniquely determined from the unpolarized joint-decay distributions of the Lambda and anti-Lambda hyperons. Also the decay-asymmetry parameters of Lambda and anti-Lambda hyperons can be determined.

Place, publisher, year, edition, pages
2017. Vol. 772, p. 16-20
Keywords [en]
Hadron production in e(-) e(+) interactions, Hadronic decays
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-340103DOI: 10.1016/j.physletb.2017.06.011ISI: 000411369700004OAI: oai:DiVA.org:uu-340103DiVA, id: diva2:1179735
Available from: 2018-02-02 Created: 2018-02-02 Last updated: 2018-02-02Bibliographically approved

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Fäldt, GöranKupsc, Andrzej
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