2015 CAP Congress / Congrès de l'ACP 2015

A search for heavy gluon and vector-like quark in the 4b final state in pp collisions at 8 TeV

16 Jun 2015, 09:45

15m

CCIS 1-160 (University of Alberta)

Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition) Particle Physics / Physique des particules (PPD) T1-5 Energy Frontier: Susy & Exotics I (PPD-DTP) / Frontière d'énergie: supersymétrie et particules exotiques I (PPD-DPT)

Speaker

Frederick Dallaire (Universite de Montreal (CA))

Description

Searches for vector-like quarks are motivated by Composite Higgs models assuming a new strong sector and predict the existence of new heavy resonances. A search for single production of vector-like quarks is performed for the through the exchange of a heavy gluon in the $pp\to G^{\ast }\to B\overline{b}/\overline{B}b\to Hb\overline{b}\to b\overline{b}b\overline{b}$ process, where $G^{\ast }$ is a heavy color octet vector resonance and $B$ a vector-like quark of charge -1/3. The largest background, QCD multi-jet, is estimated using a data-driven method. In case of no excess of events, upper limits on the production cross sections and lower limits in the 2D plane {m_G^*, m_B} will be set.

Presentation materials

Slides

CAP_June2015_Dallaire.pdf