A more general list of topics that was discussed in Les Houches can be found below.
Interested people: Roberto, Christophe, Matthew, Gustaaf, Filip, Son, Bondu, Massironi, Yun … (please add your name!)
Relevant literature: 1206.5001, 1210.8166, 1002.1011
To do:
1) check feasability of WW→hh: which channel (WWbb)? which lumi? is energy upgrade competitive?
2) sensitivity on trilinear H^3 in gg→hh vs gg→h (at two loops): by the time we are able to measure it, will gg→hh be competitive with single higgs?
3) check extraction of anomalous couplings (e.g. cH) using double Higgs strahlung at the LHC
4) effect of resonances (ex: heavy scalar decaying to hh) in double-Higgs production