Hard color singlet BFKL exchange and gaps between jets at the LHC
2017 (English)Report (Other academic)
We explore the perturbative QCD dynamics of hard parton-parton scattering through the exchange of a color singlet two-gluon ladder as described by the BFKL equation, resulting in a rapidity gap between two high transverse momentum jets. Implementing this in a complete Monte Carlo event simulation that also accounts for additional QCD processes at softer scales provides dynamical modeling of gap survival probabilities, which makes possible a detailed comparison with data on such jet-gap-jet events. New data from CMS at the LHC extend the dynamic range of the previous Tevatron data, and can be reproduced reasonably well provided that the Soft Color Interaction model is modified based on the idea of reduced resolution power of softer gluon exchanges. This indicates the need for further theoretical developments in connection with other color exchange processes related to rapidity gaps in the hadronic final state.
Place, publisher, year, edition, pages
QCD, BFKL, rapidity gaps, jets, Monte Carlo
Research subject Physics with specialization in Elementary Particle Physics
IdentifiersURN: urn:nbn:se:uu:diva-319966OAI: oai:DiVA.org:uu-319966DiVA: diva2:1088196