Contact
Name
Michele Selvaggi

Position
Former member
Research scientist Member from October 2012
Projects
Research directions:
Phenomenology of elementary particles
Data analysis in HEP experiments
Detector commissioning, operation and data processing

Experiments and collaborations:
CMS

Active projects
Development of a framework for fast simulation of a generic collider experiment: Delphes
Jérôme de Favereau, Christophe Delaere, Pavel Demin, Andrea Giammanco, Vincent Lemaitre

Observability of new phenomenological models in High Energy experiments is delicate to evaluate, due to the complexity of the related detectors, DAQ chain and software. Delphes is a new framework for fast simulation of a general purpose experiment. The simulation includes a tracking system, a magnetic field, calorimetry and a muon system, and possible very forward detectors arranged along the beamline. The framework is interfaced to standard file format from event generators and outputs observable analysis data objects. The simulation takes into account the detector resolutions, usual reconstruction algorithms for complex objects (FastJet) and a simplified trigger emulation. Detection of very forward scattered particles relies on the transport in beamlines with the Hector software.
Fast Simulation of the CMS experiment
Andrea Giammanco

A framework for Fast Simulation of particle interactions in the CMS detector (FastSim) has been developed and implemented in the overall simulation, reconstruction and analysis framework of CMS. It produces data samples in the same format as the one used by the Geant4-based (henceforth Full) Simulation and Reconstruction chain; the output of the Fast Simulation of CMS can therefore be used in the analysis in the same way as data and Full Simulation samples. FastSim is used in several physics analyses in CMS, in particular those requiring a generation of many samples to scan an extended parameter space of the physics model (e.g. SUSY) or for the purpose of estimating systematic uncertainties. It is also used by several groups to design future sub-detectors for the Phase-II CMS upgrades.
Related activities at UCL include the integration with the Full Simulation in the simulation of the electronic read-out ("digitization") and of the pileup of events from other proton-proton collisions, both in-time and out-of-time; the performance monitoring; and the overall maintenance and upgrade of the tracking-related code. Matthias Komm is current L3 convener of Tracking in FastSim, and Andrea Giammanco has been main responsible of the FastSim project from 2011 to 2013.

Non-active projects
Publications in CP3
All my publications on Inspire

Number of publications as CP3 member: 4 Download BibTeX

2016

CP3-16-27: Resurrecting the Dead Cone
Maltoni, Fabio and Selvaggi, Michele and Thaler, Jesse

[Abstract] [PDF] [Journal] [Dial]
12 pages, 12 figures
Refereed paper. June 1.

2015

CP3-15-06: Tracking down hyper-boosted top quarks
Larkoski, Andrew J. and Maltoni, Fabio and Selvaggi, Michele

[Abstract] [PDF] [Journal] [Dial]
Submitted to JHEP
Refereed paper. March 10.

2013

CP3-13-32: DELPHES 3, A modular framework for fast simulation of a generic collider experiment
de Favereau, J. and others

[Abstract] [PDF] [Journal] [Dial]
Published in JHEP
Refereed paper. July 25.

2012

CP3-12-56: Top B Physics at the LHC
Oram Gedalia, Gino Isidori, Fabio Maltoni, Gilad Perez, Michele Selvaggi, Yotam Soreq

[Abstract] [PDF] [Journal] [Dial]
Published in PRL.
Refereed paper. December 18.