26-30 July 2021
Zoom
Europe/Berlin timezone

Mass Unspecific Supervised Tagging (MUST) for boosted jets

28 Jul 2021, 16:45
15m
Zoom

Zoom

Parallel session talk Searches for New Physics T10: Searches for New Physics

Speaker

João Seabra (CFTP (IST, Lisbon))

Description

Jet identification tools are crucial for new physics searches at the LHC and at future colliders. We introduce the concept of Mass Unspecific Supervised Tagging (MUST) which relies on considering both jet mass and transverse momentum varying over wide ranges as input variables — together with jet substructure observables — of a multivariate tool. This approach not only provides a single efficient tagger for arbitrary ranges of jet mass and transverse momentum, but also an optimal solution for the mass correlation problem inherent to current taggers. By training neural networks, we build MUST-inspired generic and multi-pronged jet taggers which, when tested with various new physics signals, clearly outperform the variables commonly used by experiments to discriminate signal from background. These taggers are also efficient to spot signals for which they have not been trained. Taggers can also be built to determine, with a high degree of confidence, the prongness of a jet, which would be of utmost importance in case a new physics signal is discovered.

Email joao.f.seabra@tecnico.ulisboa.pt
Collaboration / Activity Particle physics
First author João Seabra

Primary authors

Prof. Juan Aguilar-Saavedra (Departamento de Física Teórica y del Cosmos, Universidad de Granada) Prof. Filipe Joaquim (CFTP, Instituto Superior Técnico, Universidade de Lisboa) João Seabra (CFTP (IST, Lisbon))

Presentation Materials