Measurement of the isospin amplitude ∣M0 1 2∣ in the reaction γn → ϱ0(pπ-) at 7.5 GeV

G. Alexander, O. Benary, S. Dagan, A. Levy, D. Lissauer, Y. Oren

Research output: Contribution to journalArticlepeer-review

Abstract

The cross-channel isospin amplitude {divides}M0 1 2{divides} is measured in the single reaction γn → ρ{variant}0(pπ-) at 7.5 GeV assuming the ρ{variant}0 dominance model. A low-mass enhancement is found for {divides}M0 1 2{divides}2 in the range of m(pπ-) of ∼1.2 to ∼1.7 GeV. The reaction strongly violates s-channel helicity conservation but is consistent with t-channel helicity conservation. The {divides}M0 1 2{divides} features are found to be very similar to those obtained in previous analyses of πp → π(Nπ) reactions.

Original languageEnglish
Pages (from-to)48-54
Number of pages7
JournalNuclear Physics, Section B
Volume115
Issue number1
DOIs
StatePublished - 15 Nov 1976

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