A search for charm production in the coherent diffractive dissociation reaction pSi→XSi was carried out for the modes D0→K-π+, D0→K-π+π+π-, and D+→K-π+π+. No charm signals were observed, and the 90% confidence level upper limit for coherent charm pair production was determined to be 26 μb per silicon nucleus. The results are interpreted as an upper limit of 0.2% on the amount of intrinsic charm in the proton.
ASJC Scopus subject areas
- Nuclear and High Energy Physics