Study of the D0 --> pi+ pi- pi0 decay at BABAR
Mario Gaspero (for the BABAR Collaboration)
TL;DR
This paper analyzes the decay D0 --> pi+ pi- pi0 using BABAR data, revealing a predominantly I=0 isospin component in the final state, which is surprising given weak interaction isospin violation.
Contribution
It provides the first detailed isospin analysis of the D0 decay Dalitz-plot, highlighting the unexpectedly high I=0 contribution.
Findings
I=0 contribution is about 96% in the decay final state
Dalitz-plot structure reveals quantum numbers IG JPC = 0- 0--
High I=0 component is unexpected due to weak interaction violation
Abstract
The Dalitz-plot of the Decay D0 --> pi+ pi- pi0 measured by the BABAR Collaboration shows the structure of a final state having quantum numbers IG JPC = 0- 0--. An isospin analysis of the Daliz-plot finds that the I = 0 contribution is about 96%. This high I = 0 contribution is unexpected because the weak interaction violates the isospin.
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