Search for K_{L}→π^{0}π^{0}γγ and K_{L}→π^{0}π^{0}X where X→γγ at the KOTO Experiment
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We performed searches for K_{L}→π^{0}π^{0}X where X may be an axionlike particle that promptly decays to two photons, and the first search for K_{L}→π^{0}π^{0}γγ at the KOTO experiment using data taken in 2021. The search is performed for X mass in the... ...
