Color Transparency in <inline-formula><math display="inline"><semantics><mrow><mover accent="true"><mi>p</mi><mo>¯</mo></mover></mrow></semantics></math></inline-formula><i>A</i> Reactions

Abstract

Exclusive channels of antiproton annihilation on the bound nucleon are sensitive to mesonic interactions with the target residue. If the hard scale is present, then such interactions should be reduced due to color transparency (CT). In this paper, the d(p¯,π−π0)p reaction is discussed at a large center-of-mass angle. Predictions for the future PANDA (antiProton ANnihilations at DArmstadt) experiment at FAIR (Facility for Antiproton and Ion Research, Darmstadt, Germany) are given for nuclear transparency ratios calculated within the generalized eikonal approximation and the quantum diffusion model of CT.

Keywords

• color transparency
• PANDA experiment
• antiproton–deuteron interactions
• two-pion production