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Observation of spin 1 resonance formation in the final stateKKπ produced in tagged two-photon collisions

Research output: Contribution to journalJournal article

Published

Journal publication date1989
JournalZeitschrift für Physik C: Particles and Fields
Journal number3
Volume42
Number of pages6
Pages355-360
Original languageEnglish

Abstract

Resonance formation has been observed in tagged two photon collisions. Since there is no corresponding signal in the untagged data these resonances have been interpreted as havingJ=1. Assigning the signal at a mass of ∼1.4 GeV/c2 to thef 1(1420), the product of the branching fraction and the two-photon width has been determined to be B(f1(1420)→KKˉπ)⋅Γ˜f1(1420)=2.3+1.0−0.9±0.8keV.