MadAnalysis 5 LLP (Long Lived Particle)

LLP with official Delphes 3.3.3

• Test with commented example

• Extensive test with signal regions

• Reference event

• one sample with unknown particle

LLP with special Delphes package for MA5

Delphes-LLP package is a special improvement of the Delphes package. Associated to MadAnalysis 5 v1.6, it allows the user to perform phenomenological investigations with long-lived particles or to recast existed analysis devoted to this kind of signature.

Current status: the package handles neutral LLPs which decay into leptons in the first layers of the CMS tracker (such as neutralino in the framework of RPV-SUSY).

New modules in Delphes: ====

Changes in the Delphes dataformat:

for leptons:

• D0: impact parameter in tranverse plane wrt the closest approach point
• Z: Z-coordinate of the closest approach point

Recast experimental analyses

Ongoing developement