Tera- Z stage at future colliders and light composite axionlike particles

Cacciapaglia, G. and Deandrea, A. and Iyer, A. M. and Sridhar, K. (2022) Tera- Z stage at future colliders and light composite axionlike particles. Physical Review D, 105 (1). ISSN 2470-0010

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Abstract

The Tera-� phase of future �+⁢�− colliders, FCC-ee and CEPC, is a gold mine for exploring � portal physics. We focus on axionlike particles (ALPs) that can be produced via � decays with a monochromatic photon. As a template model, we consider composite Higgs models with a light pseudoscalar that couples through the Wess–Zumino–Witten term to the electroweak gauge bosons. For both photophilic and photophobic cases, we show that the Tera-� can probe composite scales up to 100s of TeV, well beyond the capability of the LHC and current precision physics. Our results also apply to generic ALPs and, in particular, severely constrain models that explain the muon � −2 anomaly.

Item Type:	Article
Authors:	Cacciapaglia, G. and Deandrea, A. and Iyer, A. M. and Sridhar, K.
Document Language:	Language English
Subjects:	Natural Sciences Natural Sciences > Physics
Divisions:	Azim Premji University - Bengaluru > School of Arts and Sciences
Full Text Status:	Public
URI:	http://publications.azimpremjiuniversity.edu.in/id/eprint/7104
Publisher URL:	https://doi.org/10.1103/PhysRevD.105.015020

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