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2017:groups:higgs:2h [2017/06/17 14:46]
stefania.gori
2017:groups:higgs:2h [2017/06/21 10:08]
shankha.banerjee
Line 1: Line 1:
-Interested:+====== Higgs Self Coupling and di-Higgs ======
  
-1. V phi, with phi -> gamma gamma, what does the LHC can say? 
- 
-bounds from LEP. what is the LHC capability? 
- 
-bounds from H coupling measurements to ZZ and EWPT 
- 
-2. Complementarity with phi single production together with a ISR 
- 
-3. h->​ss->​SM (eventually scalars with different masses h-> s1s2) 
-what are the holes? ​ 
- 
-* signatures with resolved/​not resolved photons: 2b 2gamma, 4 gamma, s Z with s->gamma gamma 
- 
-* decays involving missing energy: h->chi1 chi2 with chi1 invisible 
- 
-* s with displaced decays. Role of the LHCb 
  
 +Interested people: Fabio Maltoni, Minho Son, José Zurita, Benjamin Fuks, Ramona Groeber, Alexandra Carvalho, Shankha Banerjee, Biplob Bhattacherjee ...
 +\\
 +\\
 +We will discuss the resonant production together with the "​Interference"​ group.
 +\\
 +\\
 +Idea so far: Parameterise resonant production in terms of 5 parameters. Check when only a subset is necessary, check under which circumstances there is sizeable interference with box and 125 GeV Higgs exchange.
 +\\
 +A reference for the singlet model and the interferences is
 +https://​arxiv.org/​pdf/​1508.05397.pdf
 +\\
 +\\
 +Further possible discussion points for the kick-off meeting:\\
 +1.) status what kind of analysis ongoing?\\
 +2.) resonant production searches at the moment in terms of benchmarks, how to benchmark, generalisation,​ interference?​\\
 +3.) combination different final states \\
 +4.) Scenarios that allow us to observe new physics for first time in HH production?​\\
 +5.) in EFT analysis BR remain SM-like, can be improved on that? \\
 +6.) larger bounds on trilinear Higgs self-coupling can be usually obtained in negative range, but most models have positive deviation, which models have negative deviation?​\\
2017/groups/higgs/2h.txt · Last modified: 2017/06/25 21:28 by majumder.devdatta