[Formula Presented]-wave [Formula Presented] production in [Formula Presented] collision from chiral perturbation theory calculations with loop contributions

E. Gedalin, A. Moalem, L. Razdolskaya

Research output: Contribution to journalArticlepeer-review

Abstract

The total cross section for the [Formula Presented] reaction at energies close to threshold is calculated within the frame of chiral perturbation theory, taking into account tree and one loop diagrams up to chiral order [Formula Presented]. We confirm that (i) the leading order impulse and rescattering terms have opposite signs and their overall contributions to chiral order [Formula Presented] underestimates the cross section by a factor of 3, and (ii) one loop contributions are substantially larger than lower order contributions, indicating that the heavy fermion formalism power series expansion converges very slowly, and therefore, may not be suitable to apply to pion production in [Formula Presented] collisions.

Original languageEnglish
Pages (from-to)5
Number of pages1
JournalPhysical Review C - Nuclear Physics
Volume60
Issue number3
DOIs
StatePublished - 1 Jan 1999

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