Observation of an $A_{3}$ - Amplitude Phase Change

Publisher Website

11 February 1974

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 32 (6) , 331-334
https://doi.org/10.1103/physrevlett.32.331

Abstract

A spin and parity decomposition is presented of the (

π^{+} π^{+} π^{-}

) final state formed opposite a proton by incident 13-GeV/c

π^{+}

mesons. The

A_{3}

enhancement is identified as the

2^{-}

amplitude decaying to

f^{0} π^{+}

via an

S

wave. A change in relative phase is noted between the

2^{-} S

amplitude and the other principal contributions; this is not incompatible with analyses of the

{(3 π)}^{-}

system. The method employs the University of Illinois three-body partialwave analysis program.

Keywords

This publication has 9 references indexed in Scilit:

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