Production of axion-like particles via vector boson fusion at future electron-positron colliders

Abstract

One kind of particularly interesting pseudoscalar particles, called axion-like particles (ALPs), have rich physical phenomenology at high-and low-energy collider experiments. After discussing most of single production channels of ALP at electron-positron colliders, we investigate the possibility of detecting this kind of new particles through the W + W − fusion process e + e − → ν e ν e a (→ γγ) at the CLIC. The 3σ and 5σ bounds on the ALP parameter space at the three energy stages of the CLIC are obtained. We find that the bounds given by the CLIC are complementary to the existing experiments exclusion regions.

Search for long-lived axions with far detectors at future lepton colliders

“…Recent phenomenology studies on ALPs at e − e + colliders can be found in Refs. [44][45][46][47][48][49], and more studies can be found in the reviews [50][51][52][53][54][55] and references therein.…”

Probing axion-like particles coupling to gluons at the LHC

“…Another search constrains the ALP-gluon-gluon coupling through the signal process gg → a → ZZ, Zh at the LHC by the CMS collaboration [31]. Additionally, a plethora of phenomenological researches [19,[33][34][35][36][37][38][39][40][41][42][43][44] have also been amassed on the sensitivities of the ALP-gluon-gluon coupling, albeit dominantly in the sub-GeV ALP mass range.…”