Colorful Twisted Top Partners and Partnerium at the LHC

Yevgeny Kats, Matthew McCullough, Gilad Perez, Yotam Soreq, Jesse Thaler

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

In scenarios that stabilize the electroweak scale, the top quark is typically accompanied by partner particles. In this work, we demonstrate how extended stabilizing symmetries can yield scalar or fermionic top partners that transform as ordinary color triplets but carry exotic electric charges. We refer to these scenarios as "hypertwisted" since they involve modifications to hypercharge in the top sector. As proofs of principle, we construct two hypertwisted scenarios: a supersymmetric construction with spin-0 top partners, and a composite Higgs construction with spin-1/2 top partners. In both cases, the top partners are still phenomenologically compatible with the mass range motivated by weak-scale naturalness. The phenomenology of hypertwisted scenarios is diverse, since the lifetimes and decay modes of the top partners are model dependent. The novel coupling structure opens up search channels that do not typically arise in top-partner scenarios, such as pair production of top-plus-jet resonances. Furthermore, hypertwisted top partners are typically sufficiently long lived to form "top-partnerium" bound states that decay predominantly via annihilation, motivating searches for rare narrow resonances with diboson decay modes.
Original languageEnglish
Article number126
Number of pages34
JournalJournal of High Energy Physics
Volume2017
Issue number6
DOIs
Publication statusPublished - 23 Jun 2017

Funding

BSF; ERC; ISF; Weizmann-U.K. Making Connections Programme; U.S. Department of Energy (DOE) [DE-SC-00012567, DE-SC-00015476]; Minerva. We thank Nathaniel Craig, Diptimoy Ghosh, and David Pinner for useful discussions, and Andrea Wulzer for comments on the draft. Feynman diagrams in this paper were generated with TikZ-Feynman [127], and we thank Joshua Ellis to for his support using the package. The work of GP is supported by grants from the BSF, ERC, ISF, Minerva, and the Weizmann-U.K. Making Connections Programme. The work of YS and JT is supported by the U.S. Department of Energy (DOE) under grant contract numbers DE-SC-00012567 and DE-SC-00015476. Article funded by SCOAP

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