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18.06.2024 / 15:00 - 16:00 / Hamburg, SR2, building 2a
Theorie SeminarThreshold resummation for Drell-Yan like processes at N3LL
Chinmoy Dey (IIT Guwahati)
We study the threshold effect for neutral and charged Drell-Yan productions, associated Higgs boson production with a massive vector boson and Higgs production in bottom quark annihilation at the Large Hardon Collider to the third order in QCD. All these processes are Drell-Yan ( DY ) like, where quarks are annihilated to vector boson. We have used the third-order soft-virtual results for these processes, and exploiting the universality of the threshold logarithms, we extract the process-dependent coefficients for these processes and resum large threshold logarithms to next- to-next-to-next-to leading logarithmic (N3LL) accuracy. By matching our results to the recently available N3LO results from the n3loxs package, we provide the most precise theoretical predictions for these processes up to N3LO+N3LL. We present numerical results for invariant mass distribution and total production cross-sections. We find that the conventional scale uncertainties of about 0.4% at the N3LO level in the fixed order results are reduced to as small as less than 0.1% at the N3LO+N3LL level in the high invariant mass region.
More Information: https://indico.desy.de/event/44969/
