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Physik-Institut Group of Massimiliano Grazzini

Research Tools

  • MATRIXM. Grazzini, S. Kallweit, M. Wiesemann, Eur.Phys.J.C 78 (2018) 7, 537[arXiv:1711.06631]
    The computational framework Matrix allows the user to evaluate fully differential cross sections for a wide class of processes at hadron colliders in NNLO QCD, NLO EW and NLO QCD for the loop-induced gg contribution. The processes are 2 → 1, 2 → 2 and 2 → 3 hadronic reactions involving Higgs and vector bosons in the final state. All possible leptonic decay channels of the vector bosons are included in the calculations, by consistently accounting for all resonant and non-resonant diagrams, off-shell effects and spin correlations. As a consequence the full lepton kinematics is accessible to define realistic cuts and distributions in the fiducial volume. This facilitates direct comparisons with experimental data of rates and unfolded distributions.

  • HqT: G. Bozzi, S. Catani, D. de Florian, M. Grazzini, Phys. Lett.B 564 (2003) 65 [ hep-ph/0302104], Nucl. Phys. B 737 (2006) 73 [ hep-ph/0508068]; D. de Florian, G. Ferrera, M. Grazzini, D. Tommasini, JHEP 1111 (2011) 064 [arXiv:1109.2109]
    Computes the transverse momentum distribution for Higgs production in pp collisions at NLL+LO and NNLL+NLO accuracy. At NLL+LO the normalization is fixed to the total NLO cross section. At NNLL+NLO the normalization is fixed to the total NNLO cross section.
    HqT2.0 (major update, includes LHAPDF interface, see documentation (PDF))
     
  • HNNLO: S. Catani, M. Grazzini, Phys. Rev. Lett. 98 (2007) 222002 [ hep-ph/0703012]; M. Grazzini, JHEP 02 (2008) 043, arXiv:0801.3232 [hep-ph]; M. Grazzini, H. Sargsyan, arXiv:1306.4581.
    Parton level Monte Carlo program that computes the cross sections for Higgs production in pp and ppbar collisions up to NNLO in QCD perturbation theory. The present version includes the H->2gamma, H->WW->lnu lnu and H->ZZ->4l decay modes. The program allows the user to apply arbitrary cuts on the momenta of the partons and/or the leptons (photons) produced in the final state, and to easily obtain the desired distributions in the form of bin histograms.
    hnnlo-v2.1 (new version including heavy-quark masses, see documentation (PDF))
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  • HRes: D. de Florian, G. Ferrera, M. Grazzini, D. Tommasini, arXiv:1203.6321 [hep-ph]; M. Grazzini, H. Sargsyan, arXiv:1306.4581 [hep-ph].
    Computes fixed cross sections for SM Higgs boson production up to NNLO by consistently including all-order resummation of soft-gluon effects at small transverse momenta up to NNLL. The program retains the full kinematic information on the Higgs boson and its decay products. The present version includes the H->2gamma, H->WW->lnu lnu and H->ZZ->4l decay modes. The program allows the user to apply arbitrary cuts on the Higgs boson and its decay products, and to easily obtain the desired distributions in the form of bin histograms. An interface with ROOT is also provided.
    HRes-v2.3 (new version including heavy-quark masses and dynamic scale, see documentation (PDF))
  • DYNNLO: S. Catani, L. Cieri, G. Ferrera, D. de Florian, M. Grazzini, Phys. Rev. Lett. 103 (2009) 082001, [arXiv:0903.2120 [hep-ph]]; S. Catani, M. Grazzini, Phys. Rev. Lett. 98 (2007) 222002 [ hep-ph/0703012].
    Parton level Monte Carlo program that computes the cross sections for vector boson production in pp and ppbar collisions up to NNLO in QCD perturbation theory. The calculation includes the gamma-Z interference, finite-width effects, the leptonic decay of the vector bosons and the corresponding spin correlations. The program allows the user to apply arbitrary cuts on the momenta of the partons and/or the leptons produced in the final state, and to easily obtain the desired distributions in the form of bin histograms.
    dynnlo-v1.5 (latest version, see documentation (PDF))
     
  • DYRes: S. Catani, G. Ferrera, D. de Florian, M. Grazzini, [arXiv:1507.06937 [hep-ph]]; G. Bozzi, S. Catani, D. de Florian, G. Ferrera, M. Grazzini, Phys. Lett. B 696 (2011) 207 [arXiv:1007.2351].
    The DYRes program computes the cross section for vector boson production in pp or pp collisions. DYRes combines the calculation of the cross section up to next-to-next-to-leading order (NNLO) with the resummation of the logarithmically-enhanced contributions at small transverse momenta up to next-to-next-to-leading accuracy (NNLL) in QCD perturbation theory. The program includes the Z-gamma interference, finite-width effects and the leptonic decay of the vector boson with the corresponding spin correlations. The calculation retains the full kinematics of the vector boson and of its decay products, allowing the user to apply arbitrary cuts on these final-state kinematical variables, and to plot the corresponding distributions in the form of bin histograms. The decay modes included are W->lnu and Z/gamma*->ll. When referring to this program, please quote the references above.
    DYRes-v1.0 (see documentation (PDF))