The LHC potential of vector-like quark doublets

Cacciapaglia, Giacomo (0000 0001 2150 7757, Université de Lyon, Université Lyon 1, CNRS/IN2P3, UMR5822 IPNL, F-69622, Villeurbanne Cedex, France) ; Deandrea, Aldo (0000 0001 2150 7757, Université de Lyon, Université Lyon 1, CNRS/IN2P3, UMR5822 IPNL, F-69622, Villeurbanne Cedex, France) (0000 0001 1931 4817, Institut Universitaire de France, 103 boulevard Saint-Michel, 75005, Paris, France) ; Gaur, Naveen (0000 0001 2109 4999, Department of Physics, Dyal Singh College (University of Delhi), Lodi Road, New Delhi, 110003, India) ; Harada, Daisuke (0000 0004 1759 700X, Zhejiang Institute of Modern Physics and Department of Physics, Zhejiang University, Hangzhou, Zhejiang, 310027, China) ; Okada, Yasuhiro (0000 0001 2155 959X, KEK Theory Center, Institute of Particle and Nuclear Studies, KEK, 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan) (0000 0004 1763 208X, Department of Particle and Nuclear Physics, Graduate University for Advanced Studies (Sokendai), 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan) ; Panizzi, Luca ( Dipartimento di Fisica, Università di Pisa and INFN — Sezione di Pisa, Largo Pontecorvo 3, I-56127, Pisa, Italy)

09 November 2018

Abstract: The existence of new vector-like quarks is often predicted by models of new physics beyond the Standard Model, and the development of discovery strategies at colliders is the object of an intense effort from the high-energy community. Our analysis aims at identifying the constraints on and peculiar signatures of simplified scenarios containing two vector-like quark doublets mixing with any of the SM quark generations. This scenario is a necessary ingredient of a broad class of theoretically motivated constructions. We focus on the two charge 2/3 states t 1,2 ′ that, due to their peculiar mixing patterns, feature new production and decay modes that are not searched for at the LHC: single production of the heavier state can dominate over the light one, while pair production via electroweak interactions overcomes the QCD one for masses at the TeV scale.


Published in: JHEP 1811 (2018) 055
Published by: Springer/SISSA
DOI: 10.1007/JHEP11(2018)055
arXiv: 1806.01024
License: CC-BY-4.0



Back to search

Fulltext:
Download fulltextXML Download fulltextPDF (PDFA)