Brieuc François
PhD student. Funding: IISN.
Member since September 2012
Centre for Cosmology, Particle Physics and Phenomenology - CP3
Université catholique de Louvain
2, Chemin du Cyclotron - Box L7.01.05
B-1348 Louvain-la-Neuve
+32 10 47 3197
UCL member card
I am involved in the following research directions:

Search for nonresonant Higgs boson pair production in the llbb+MET final state

The discovery of a Higgs boson (H) by the ATLAS and CMS experiments fixes the value of the self-coupling λ in the scalar potential whose form is determined by the symmetries of the Standard Model and the requirement of renormalisability. Higgs boson pair production is sensitive to the self-coupling and will play a major role in investigating the scalar potential structure.

This project consists in a search for nonresonant Higgs boson pair production via gluon fusion in the final state with two leptons, two b jets and missing transvere energy – gg → H(bb) H(WW) asking for the leptonic decay of the W's. The analysis is conducted in close collaboration with phenomenologists to ensure the approach is theoretically sound and future-proof.

Search for resonant Higgs pair production in the llbb+MET final state

The recent discovery of a scalar boson compatible with the Standard Model (SM) Higgs boson opened new windows to look for physics beyond the SM (BSM). An example of newly accessible phenomenology is the production of resonances decaying into two SM Higgs bosons (h) predicted by several theory families such as additional Higgs singlet/doublet or warped extra dimension.

This project consists in a search for spin-0 or spin-2 resonances produced via gluon fusion in the final state with two leptons, two b-jets and missing transverse energy – gg → X → h(bb) h(WW) asking for the leptonic decay of the W's. In particular, we are probing a mass range between 260 GeV and 900 GeV.

The CMS silicon strip tracker upgrade

Development of the "phase II" upgrade for the CMS silicon strip stracker.

More precisely, we are involved in the development of the uTCA-based DAQ system and in the test/validation of the first prototype modules. We take active part to the various test-beam campaigns (CERN, DESY, ...)

This activity will potentially make use of the cyclotron of UCL, the probe stations and the SYCOC setup (SYstem de mesure de COllection de Charge) to test the response to laser light, radioactive sources and beams.

The final goal is to take a leading role in the construction of part of the CMS Phase-II tracker.

External collaborators: CRC and CMS collaboration.

Show past projects.
Publications in CP3
All my publications on Inspire


Search for production of two Higgs bosons in the b-blν lν final state in 2016 data
O. Bondu, S. Brochet, C. Delaere, M. Delcourt, B. François, V. Lemaître, M. Vidal Marono, S. Wertz
[Full text] Restricted access; CMS AN-2016/430
Private experimental note. 21st August.
Search for resonant and nonresonant Higgs boson pair production in the bblnulnu final state in proton-proton collisions at sqrt(s) = 13 TeV
CMS collaboration
[Abstract] [PDF] [Full text] Submitted to JHEP.
Refereed paper. 21st August.


Search for H(WW)H(bb) decays using the 2015 data sample
CMS collaboration
[Full text] prepared for Moriond 2016
Public experimental note. 28th April.


Higgs pair production at the High Luminosity LHC
CMS collaboration
[Full text] CMS-PAS-FTR-15-002
Public experimental note. 29th October.


Study of HH production with H → bb, H → WW → lν lν for an upgraded CMS detector at the HL-LHC
C. Delaere, B. Francois, V. Lemaitre, A. Mertens, M. Vidal Marono
[Full text] CMS AN-2014/141
Private experimental note. 1st December.

[UCLouvain] - [SST] [IRMP] - [SC]
Contact : Jérôme de Favereau
Job opportunities PhD Position in Theoretical Particle Physics and Cosmology