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2017:groups:higgs:inter [2017/06/21 14:18]
stefan.liebler
2017:groups:higgs:inter [2017/06/23 10:06] (current)
olivier.mattelaer
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 ===== Interference effects in the search for heavy Higgs bosons ===== ===== Interference effects in the search for heavy Higgs bosons =====
  
-//​Interested people: Stefan Liebler, Jérémie Quevillon, Sabine Kraml [add your names]//+//​Interested people: Stefan Liebler, Jérémie Quevillon, Sabine Kraml, Alexandra Carvalho, Ramona Gröber, Tetiana Berger-Hryn'​ova,​ Fabio Maltoni ​[add your names]//
  
 Motivation: Motivation:
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 {{:​2017:​groups:​higgs:​img_20170620_183954.jpg?​400| Blackboard}} {{:​2017:​groups:​higgs:​img_20170620_183954.jpg?​400| Blackboard}}
 +
 +Discussion 22/06/2017:
 +
 +Work plan:
 +  - Calculate $d\sigma^X/​dm_{VV}$ or $dm_{HH}$ for $gg\to VV/HH$ at LO QCD and at partonic level for $X=S,I_B$ and $I_H$ for the subsequent parameters and store them as a function of $m_{VV}/​m_{HH}$ in a table that ranges from $m_\Phi-10\Gamma_\Phi$ to $m_\Phi+10\Gamma_\Phi$ with sufficient data points:
 +  - $VV$: $c_ge^{i\theta_g}$,​ $m_\Phi$, $\Gamma_\Phi$,​ $\kappa_V$ (in a first step choose $\sqrt{1-\kappa_V^2}$ for the SM $HVV$ coupling).
 +  - $HH$: $c_ge^{i\theta_g}$,​ $m_\Phi$, $\Gamma_\Phi$,​ $\lambda_{Hhh},​ \lambda_{hhh}$
 +  - Read in the table (with Mathematica) and calculate relative correction factors named $(\eta^-,​\eta^+,​\eta)$,​ see slides, or apply a similar method (e.g. arXiv:​1510.03450) to quantify the relevance of the interferences.
 +  - Try to classify the relevant regions, where interferences are of relevance (check also $\Gamma_\Phi/​m_\Phi\cdot \sigma^S/​\sigma^B$).
  
 **References:​ ** **References:​ **
2017/groups/higgs/inter.1498047515.txt.gz · Last modified: 2017/06/21 14:18 by stefan.liebler