Complex amplitude phase motion in Dalitz plot heavy meson three body decay

We propose a method to determine the phase motion of a complex amplitude in three body heavy meson decays. We show that the phase variation of a complex amplitude can be directly revealed through the interference observed in the Dalitz plot region where it crosses with a well established resonant st...

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Bibliographic Details
Published in:Physics letters. B 2002-12, Vol.550 (3-4), p.135-139
Main Authors: Bediaga, Ignacio, de Miranda, Jussara M
Format: Article
Language:English
Subjects:
Dalitz plot
Heavy meson decay
Resonances
Scalar mesons
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Summary:We propose a method to determine the phase motion of a complex amplitude in three body heavy meson decays. We show that the phase variation of a complex amplitude can be directly revealed through the interference observed in the Dalitz plot region where it crosses with a well established resonant state. This method could be applied to the decays D+→π−π+π+ and D+→K−π+π+, to determine whether the low mass states σ and κ, suggested by E791, have phase motions compatible with resonances.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(02)02983-0