Abstract
We introduce a new measurable quantity, R Δϕ , for studies of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations in hadron-hadron collisions. In pQCD, R Δϕ is computed as a ratio of three-jet and dijet cross sections in which the parton distribution functions cancel to a large extent. At the leading order, R Δϕ is proportional to αs, and the transverse momentum dependence of R Δϕ can therefore be exploited to determine αs. We compute the NLO pQCD theory predictions and non-perturbative corrections for R Δϕ at the LHC and the Tevatron and investigate the corresponding uncertainties. From this, we estimate the theory uncertainties for αs determinations based on R Δϕ at both colliders. The potential of R Δϕ measurements for tuning Monte Carlo event generators is also demonstrated.
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.
