Observation of the Charge Symmetry Breaking d + d -> 4He + pi0 Reaction Near Threshold

Abstract

We report the first observation of the charge symmetry breaking d + d -> 4He + pi0 reaction near threshold at the Indiana University Cyclotron Facility. Kinematic reconstruction permitted the separation of 4He + pi0 events from double radiative capture 4He + gamma + gamma events. We measured total cross sections for neutron pion production of 12.7 +- 2.2 pb at 228.5 MeV and 15.1 +- 3.1 pb at 231.8 MeV. The uncertainty is dominated by statistical errors.

7 pages, 2 figures, plain TeX

References in corpus (2)

• Charge Symmetry Violation in $pn\to d{\pi }^0$ as a Test of Chiral Effective Field Theory
• Has charge symmetry breaking been observed in the d d -> alpha pi0 reaction?

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