Abstract
We show that the anomalous dependence on the nuclear number ( A) observed in experiments on J/ψ and open charm hadroproduction cannot be explained by a suppression of the nuclear gluon distribution at small x. The x F and energy dependence of the nuclear anomaly is inconsistent with the QCD factorization formula, implying significant contributions coming from “higher twist” effects.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.