This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
2017:groups:higgs:inter [2017/06/20 17:08] stefan.liebler |
2017:groups:higgs:inter [2017/06/22 16:51] tetiana.bergerhrynova |
||
---|---|---|---|
Line 1: | Line 1: | ||
===== 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 [add your names]// |
Motivation: | Motivation: | ||
Line 19: | Line 19: | ||
The final state $HH$ is (also) discussed in the [[2017:groups:higgs:2h | di-Higgs group]]. | The final state $HH$ is (also) discussed in the [[2017:groups:higgs:2h | di-Higgs group]]. | ||
+ | |||
+ | Discussion 20/06/2017: | ||
+ | |||
+ | {{: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: ** |