Heavy Higgs and Beyond Standard Model subgroup

Goal of the group

The main scope of the group is to provide theoretical guidelines, in common between ATLAS and CMS, to

• characterize properly the heavy Higgs in the SM case (line shape and S/B interference in gg fusion and VBF)
• define general benchmarks to reinterpret SM searches/signatures in BSM scenarios
  We started to look into the most basic/general BSM scenarios from a general point of view:
  • EW-singlet mixed with SM-like Higgs at ~126 GeV
  • 2HDM

We have in the plan to look into Higgs Triple Models and study the case of two degenerate resonances at ~126 GeV from a model-independent point of view.
Also help in defining search for specific signatures (eg H->invisible, H->hh) can be provided in case of interest

On the long term (for the next LHC run) a proper strategy for general EWSB studies (eg VV scattering analysis) should be prepared

Group Contacts

Experimental contacts:

• ATLAS: Sara Diglio (Melbourne) Krisztian Peters (CERN)
• CMS: Mario Pelliccioni (Torino/CERN) Mario Kadastik (NICPB Estonia)

Theory contacts: Margarete Muehlleitner (Karlsruhe) Heather Logan (Carleton)

Results (links and references)

Complex Pole Lineshape

Link to CPS lineshape with EWK uncertainties (arXiv:1112.5517)

gg->VV S/B interference

Preliminary set of results for interference reweighing in SM case

• gg->4l Link to interference tables with QCD uncertainties (arXiv:1206.3824)

• gg->2l2n for H->ZZ->2l2n with gg2VV-3.1.3
  zz2l2n_interfwgts.root: Inteference weights in format of 1+Interf/Signal, as a function of M(ZZ). Following selections are used when computing these weights:

  pT_l > 20, |eta| < 2.5, 76.2 < M_ll < 106.2, MET > 50.

• gg->lv2j for H->WW->lvjj with MCFM-V6.3 (example input.DAT)
  wwlvjj_interfwgts.root: Inteference weights in format of Interf/Signal (Upper, Central, Down), as a function of M(WW), without cuts.

Preliminary set of results for interference reweighing in BSM case (EW singlet)

• gg->2l2n for H->ZZ->2l2n with gg2VV-3.1.3

• gg->lv2j for H->WW->lvjj with MCFM-V6.3
  wwlvjjBSM_interfwgts.root: Inteference weights in format of Interf/Signal (C2=1,0.1,...,0.9, Upper, Central, Down), as a function of M(WW), without cuts

• gg->lvlv for H->WW->lvlv with MCFM 6.3 (fixed width BW lineshape): WW lvlv Interference Weights: Interference weights in the form of Interference/Signal, for additive, central and multiplicative schemes, as a function of M(WW). Covers widths from 0.1 - 2.0 * SM. Updated on 20/5/14.

2HDM

Meetings and Minutes

• CERN InDico Agenda , Minutes

-- ReiTanaka - 20-Apr-2012

• WWlvlv_interfwgts.tar.gz: Interference Weights for HWWlvlv