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arXiv · 1611.09355

A New Flavor of Searches for Axion-Like Particles

Eder Izaguirre·Tongyan Lin·Brian Shuve
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Abstract

We propose new searches for axion-like particles (ALPs) produced in flavor-changing neutral current (FCNC) processes. This proposal exploits the often-overlooked coupling of ALPs to W bosons, leading to FCNC production of ALPs even in the absence of a direct coupling to fermions. Our proposed searches for resonant ALP production in decays such as $B\rightarrow K^{(*)}a,\,a\rightarrow γγ$ and $K\rightarrow πa, \,a\rightarrow γγ$ could greatly improve upon the current sensitivity to ALP couplings to Standard Model particles. We also determine analogous constraints and discovery prospects for invisibly decaying ALPs.

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Eder Izaguirre, Tongyan Lin, Brian Shuve. 2017-03-01. A New Flavor of Searches for Axion-Like Particles. https://doi.org/10.1103/physrevlett.118.111802

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