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Bari, 4-5 th November

Bari, 4-5 th November. Full list of cuts for VBF H-> tt , MSSM H-> mm can be found on https://twiki.cern.ch/twiki/bin/view/LHCPhysics/Tautau. Example of NLO vs PYTHIA comparison from the past: bbh (I). PYTHIA gg -> bbH describes p T b spectra at 4F NLO bbH within 5-10 %;

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Bari, 4-5 th November

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  1. Bari, 4-5th November

  2. Full list of cuts for VBF H->tt, MSSM H->mm can be found on https://twiki.cern.ch/twiki/bin/view/LHCPhysics/Tautau

  3. Example of NLO vs PYTHIAcomparison from the past: bbh (I) PYTHIA gg->bbH describes pTb spectra at 4F NLO bbH within 5-10 %; Kinnunen, Lehti, Moortgat, Nikitenko, Spira. Eur.Phys.J. C40n5:23-32,2005 b-quark was taken after gluon radiation

  4. Example of NLO vs PYTHIAcomparison from the past: bbh (II) Campbell, Kalinowski and Nikitenko; Les Houches2005 hep-ph/0604120 b-jet was build from partons with simple cone 0.7 algorithm

  5. Example of PYTHIA vs Sherpacomparison from the past : bbh PhD thesis of Markus Warsinsky 2008

  6. pTHiggs in MSSM gg->f • Langenegger, Spira, Starodumov, Trub. hep-ph/0604156: • The full quark mass dependence has to be taken into account • For large tanb the bottom quark loops must not be omitted • The calculations has to be performed at the highest possible order of as * *The full SUSY-QCD corrections with full mass dependence of the loop particles are in progress

  7. BACKUP

  8. Proposal on how to compare sexp (f/Z+b) with sth (f/Z+b) • Cuts used in analysis: • Exp. cut: pTb > pTexpcut • Gen cut at LO ME+PS : pTb > pT gen cut • Th. cut for sth at NLO : pTb > pTthcut • The way could be: • use Gen cut = Th.cuts (pT gen cut= pTthcut) • useExp.cut > Th. Cuts • pT exp cut > pTthcut + ~ 2 x sjet resolution • go from pTexp to pTth cuts using MC; correct difference in acceptance (pT, h ) between NLO and ME+PS using factor: • R = [sthexp.cuts/sthth.cuts] / [sLO+PSexp.cuts/sLO+PSth.cuts], • for LO ME+PS apply pT/h cuts on parton b-jets

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