Abstract
The branching ratios of\(p\bar p\) annihilations into the neutral final states 2π0, π0γ, and 2γ are measured by stopping antiprotons in liquid hydrogen. They are\(B_{2\pi ^0 } = \left( {2.06 \pm 0.14} \right) \times 10^{ - 4} \),\(B_{\pi ^0 \gamma } = \left( {1.74 \pm 0.22} \right) \times 10^{ - 5} \), andB γγ<1.7×10−6 (95% c.l.).
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Adiels, L., Backenstoss, G., Bergström, I. et al. Experimental determination of the branching ratios\(p\bar p \to 2\pi ^0 ,\pi ^0 \gamma \), and 2γ at rest. Z. Phys. C - Particles and Fields 35, 15–19 (1987). https://doi.org/10.1007/BF01561050
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DOI: https://doi.org/10.1007/BF01561050