Hard exclusive reactions with baryon number transfer: status and perspectives.

Jul 22, 2022, 9:00 AM
Classroom 512 (APCTP)

Classroom 512


Asia Pacific Center for Theoretical Physics, Pohang, Gyeongbuk 37673, Korea


Kirill Semenov-Tyan-Shanskiy (Kyungpook National University)


Nucleon-to-meson Transition Distribution Amplitudes (TDAs) appear as building blocks in the collinear factorized description of amplitudes for a class of hard exclusive reactions prominent examples being hard exclusive pion electroproduction off a nucleon in the backward region and nucleon-antinucleon annihilation into a pion and a lepton pair.

We discuss general properties of nucleon-to-meson TDAs and argue that these non-perturbative objects turn to be a convenient complementary tool to explore the structure of hadrons at the partonic level. We present an overview of hard exclusive reactions admitting a description in terms of TDAs. We discuss the first signals from hard exclusive backward meson electroproduction at JLab and explore further experimental opportunities to access TDAs at JLab, PANDA, J-PARC and EIC.

Primary authors

Dr Bernard Pire (CPHT, CNRS, Ecole Polytechnique, I.P. Paris) Kirill Semenov-Tyan-Shanskiy (Kyungpook National University) Dr Lech Szymanowski (National Centre for Nuclear Research, Warsaw, Poland)

Presentation materials