Work

Fusing photons into nothing, a new search for invisible ALPs and Dark Matter at Belle II

Year: 2024

Type: article

Abstract: A bstract We consider an axion-like particle coupled to the Standard Model photons and decaying invisibly at Belle II. We propose a new search in the e + e − + invisible channel that we compare against the standard γ + invisible channel. We find that the e + e − + invisible channel has the potential to ameliorate the reach for the whole ALP mass range. This search leverages dedicated kinematic variables which significantly suppress the Standard Model background. We explore the implications of our expected reach for Dark Matter freeze-out through ALP-mediated annihilations.

Source: Journal of High Energy Physics

DOI: 10.1007/jhep11(2024)156

Authors: Francesca Acanfora, Roberto Franceschini, Alessio Mastroddi, Diego Redigolo

Institutions: Roma Tre University, Istituto Nazionale di Fisica Nucleare, Galileo Galilei Institute for Theoretical Physics, Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W4404843861

FWCI: 0.5

Cites: 21

Cited by: 7

Related to: 10