{'fraction_non_alphanumeric': 0.02385685884691849, 'fraction_numerical': 0.0, 'mean_word_length': 5.461538461538462, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Prompt photon plus charm quark production at pp-bar colliders.

We present a theoretical study of prompt photon plus charm quark production at the Fermilab Tevatron, comparing the results for two conceivable production mechanisms, which assume ``massless`` charmed partons in the proton, or massive charm quarks being produced extrinsically in pairs, respectively. We find that the two mechanisms yield very similar predictions and can well account for recent experimental results for the cross section.