Abstract
An enhancement of cross section for pair production near their threshold provides an opportunity to study the charm baryon at a τ-charm factory with collisions. We estimate the prospects of searching for the CP violation in the decays and . Helicity amplitude analysis shows that the asymmetry parameters, and , can be directly accessed by looking at the angular proton and antiproton distributions in their helicity systems. A Monte Carlo estimation shows that data with the integrated luminosity of yields a statistical precision of about 25% for the asymmetry parameter . To improve the precision to better than 0.1%, an integrated luminosity of at least 1800 fb−1 of data is required.
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