Towards a fully massive five-flavour scheme

Abstract

In this work we explore first necessary steps to contruct a fully massive version of a variable flavour number scheme. In particular we focus, as an example, on an extension of the five-flavour scheme, where instead of neglecting explicit initial state quark mass effects, we retain all massive dependence, while keeping the resummation properties of the massless five-flavour scheme. We name this scheme five-flavour-massive (5FMS) scheme. Apart from consistently modified parton distribution functions, we provide all the ingredients that are needed to implement this scheme at MC@NLO accuracy, in a Monte Carlo event generator. As proof of concept we implement this scheme in SHERPA, and perfom a comparison of the new scheme with traditional ones for the simple process of scalar particle production in bottom quark fusion.

16 pages, 7 figures

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Cited by in corpus (22)

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• The transverse momentum spectrum of weak gauge bosons at N${}^3$LL+NNLO
• An automated subtraction of NLO EW infrared divergences
• Two-loop leading-colour QCD helicity amplitudes for Higgs boson production in association with a bottom-quark pair at the LHC
• Large-P_T inclusive photoproduction of J/psi in electron-proton collisions at HERA and the EIC
• Predictions for $\mathrm{Z}$-boson production in association with a $\mathrm{b}$-jet at $\mathcal{O}({\alpha }_s^3)$
• Coherent Showers in Decays of Colored Resonances
• A Fragmentation Approach to Jet Flavor
• Sector Showers for Hadron Collisions
• Multi-jet merging in a variable flavor number scheme
• A new approach to QCD final-state evolution in processes with massive partons
• A consistent resummation of mass and soft logarithms in processes with heavy flavours
• Soft logarithms in processes with heavy quarks
• Fitting the b-quark PDF as a massive-b scheme: Higgs production in bottom fusion
• On the non-cancellation of infrared singularities in collisions of massive quarks
• A fragmentation-based study of heavy quark production
• $J/\psi$ meson production in association with an open charm hadron at the LHC: A reappraisal
• General mass variable flavor number scheme for $Z$ boson production in association with a heavy quark at hadron colliders
• The dipole formalism for massive initial-state particles and its application to dark matter calculations
• Measurement of cross-sections for production of a $Z$ boson in association with a flavor-inclusive or doubly $b$-tagged large-radius jet in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS experiment
• V and heavy flavour production: status and recent theoretical developments
• Monte Carlo Event Generators for Future Lepton Colliders