Abstract
The Drell-Yan formula is found to be valid in low order perturbation theory calculations in QCD. The formula is only reproduced when quark-antiquark annihilation and bremsstrahlung diagrams are all taken into account. These calculations suggest that when the experimentally extracted quark and antiquark distribution functions (which slowly violate Bjorken scaling) are used in the Drell-Yan formula, subprocesses such as those involving the bremsstrahlung of the massive lepton pair, or ones with gluons in the initial state, should not be calculated independently, as they are already included in the formula.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
