# Feasibility study for the measurement of $\pi N$ transition distribution amplitudes at $\overline P$ANDA in $\bar{p}p\to J/\psi\pi^0$

Abstract : The exclusive charmonium production process in p¯p annihilation with an associated π0 meson p¯p→J/ψπ0 is studied in the framework of QCD collinear factorization. The feasibility of measuring this reaction through the J/ψ→e+e- decay channel with the AntiProton ANnihilation at DArmstadt (P¯ANDA) experiment is investigated. Simulations on signal reconstruction efficiency as well as the background rejection from various sources including the p¯p→π+π-π0 and p¯p→J/ψπ0π0 reactions are performed with PandaRoot, the simulation and analysis software framework of the P¯ANDA experiment. It is shown that the measurement can be done at P¯ANDA with significant constraining power under the assumption of an integrated luminosity attainable in four to five months of data taking at the maximum design luminosity.
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https://hal.archives-ouvertes.fr/hal-01554461
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Submitted on : Monday, July 3, 2017 - 5:57:43 PM
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### Citation

B. Singh, W. Erni, B. Krusche, M. Steinacher, N. Walford, et al.. Feasibility study for the measurement of $\pi N$ transition distribution amplitudes at $\overline P$ANDA in $\bar{p}p\to J/\psi\pi^0$. Phys.Rev.D, 2017, 95 (3), pp.032003. ⟨10.1103/PhysRevD.95.032003⟩. ⟨hal-01554461⟩

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