Probing MeV to 90 GeV axion-like particles with LEP and LHC

Jaeckel, Joerg; Spannowsky, Michael

doi:10.1016/j.physletb.2015.12.037

Probing MeV to 90 GeV axion-like particles with LEP and LHC

Jaeckel, Joerg; Spannowsky, Michael

Authors

Joerg Jaeckel

Professor Michael Spannowsky michael.spannowsky@durham.ac.uk
Director

Abstract

Axion-like particles (ALPs), relatively light (pseudo-)scalars coupled to two gauge bosons, are a common feature of many extensions of the Standard Model. Up to now there has been a gap in the sensitivity to such particles in the MeV to 10 GeV range. In this note we show that LEP data on Z→γγ decays provides significant constraints in this range (and indeed up to the Z -mass). We also discuss the sensitivities of LHC and future colliders. Particularly the LHC shows promising sensitivity in searching for a pseudo-scalar with 4≲ma≲60 GeV in the channel pp→3γ with m3γ≈mZ.

Citation

Jaeckel, J., & Spannowsky, M. (2016). Probing MeV to 90 GeV axion-like particles with LEP and LHC. Physics Letters B, 753, 482-487. https://doi.org/10.1016/j.physletb.2015.12.037

Journal Article Type	Article
Acceptance Date	Dec 12, 2015
Online Publication Date	Dec 15, 2015
Publication Date	Feb 10, 2016
Deposit Date	Nov 10, 2016
Publicly Available Date	Jan 25, 2017
Journal	Physics Letters B
Print ISSN	0370-2693
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	753
Pages	482-487
DOI	https://doi.org/10.1016/j.physletb.2015.12.037

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Copyright Statement
© 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.