= The first !MadAnalysis 5 workshop on LHC recasting @ Korea =
= Analysis 2: CMS-EXO16-012 =

||= Students =|| ||  || || || || ||
||= Supervisor(s) =|| Guillaume Chalons || Jory Sonnefeld || || || || ||


== 1. Analysis summary ==

Mono-Higgs. 

A search for dark matter is performed using events with large missing transverse momentum and a Higgs boson decaying either to a pair of bottom quarks or to a pair of photons.  We are only interested in the photon pair final state. This analysis searches for excesses over the background-only prediction in events with large pTmiss and a diphoton system that has a reconstructed invariant mass close to the mass of the SM-like Higgs boson h.

== 2. Analysis global information ==

*  CMS contact person:cms-phys-conveners-exo@cern.ch
*  Center of mass energy: 13 TeV
*  Integrated luminosity: 2.3 fb^-1
*  Link to arXiv: https://arxiv.org/pdf/1703.05236
*  Link to the collaboration page: http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-16-012/
*  Link to CDS: https://cds.cern.ch/record/2255523
*  Link to Inspire: http://inspirehep.net/record/1517496
*  Other useful links...

== 3. Selection description ==

=== 3.1 Trigger selection ===

Diphoton triggers with asymmetric transverse energy thresholds (30/18 GeV) are used to select events with the diphoton invariant mass above 95 GeV. The trigger selection uses a very loose photon identification based on the cluster shower shape and loose isolation requirements and a requirement that the ratio of hadronic-to-electromagnetic energy (H/E) of the photon candidates is less than 0.1.

PS: This part cannot usually be described by the fast-simulation of detector.

=== 3.2 Object definition ===

* Photons: Two categories (the barrel–endcap transition region of 1.44 < |eta| < 1.57, where photon reconstruction is not optimal is excluded)
      * Photons with |eta|  < 1.44
      * Photons with 1.566  < |eta| < 2.5  

=== 3.3 Cut-flow chart ===

=== 3.4 Definition of exotic observables ===

Like SUSY transverse observable. Notice that classical MT2 & MT2W are encoded within the !MadAnalysis framework.

== 3. Detector simulation ==

Can we use the last release of the Delphes package with the CMS/ATLAS MA5tune-card? or do need to improve the simulation? 

== 4. Validation material ==

Contact with CMS people established. Waiting for the material

=== 4.1 Monte-Carlo samples ===

*   LO/NLO? LO
*   Model used: Z′-2HDM 
*   MC generator program (name + version): MADGRAPH5 aMC@NLO v2.3.0
*   Shower program (name + version): PYTHIA 8.205
*   Tune of Pythia: CUETP8M1
*   PDF set: NNPDF 3.0
*   ME/PS merging???? MLM

=== 4.2 Reference plots / cut-flows ===

*   List of validation material

== 4. Validation results ==

== 5. Reinterpretation (optional) ==

== 6. Questions / issues ==