30-31 July 2018
Instituto de Física da Universidade de São Paulo
America/Sao_Paulo timezone
Evento comemorativo dos 10 anos da Rede Nacional de Física de Altas Energias

Search for Long-Lived Gluinos in Compressed SUSY Scenarios

31 Jul 2018, 09:45
15m
Auditório Novo 1 (Instituto de Física da Universidade de São Paulo)

Auditório Novo 1

Instituto de Física da Universidade de São Paulo

Análise de Dados Análise de Dados

Speaker

Gilson Correia Silva (CBPF - Brazilian Center for Physics Research (BR))

Description

This analysis is set in the context of the Supersymmetric Compressed Scenarios, characterized by a very high compression in the mass spectrum of the gauginos and higgsinos below the TeV scale, while the scalar superpartners are out of reach of the LHC experiment. We use CMS Run II data with a center-of-mass energy of $\sqrt{s}=13\, \mathrm{TeV}$ to perform a search on a promising channel characterized by the production of two gluinos, each one decaying into a quark, anti-quark and neutralino 1. The signal leads to a hard to detect signature, characterized by the presence of a moderate missing transverse energy ($E_{T}^{\mathrm{miss}}$), secondary vertices and low energy jets. We thus require a hard jet from initial state radiation to 'tag' the event. We use a $E_{T}^{\mathrm{miss}}$ trigger to select the events, which allows us to typically select signal events that have at least one jet from the initial state radiation. In addition, we use information from jets and vertices (primary and secondary) reconstructed by the CMS to select events with sufficient information to identify the decay of at least one of the gluinos.

Primary authors

Carsten Hensel (CBPF - Brazilian Center for Physics Research (BR)) Helena Brandao Malbouisson (Universidade do Estado do Rio de Janeiro (BR)) Gilson Correia Silva (CBPF - Brazilian Center for Physics Research (BR)) Fabio Lucio Lucio Alves (CBPF - Brazilian Center for Physics Research (BR)) Gilvan Augusto Alves (CBPF - Brazilian Center for Physics Research (BR)) Matthias Hamer (University of Bonn (DE)) Sheila Silva Do Amaral (Universidade do Estado do Rio de Janeiro (BR))

Presentation Materials