K. Hasegawa

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20062023

most citedThe Mass Spectrum of the First Stars

312 citations · 1.7k across the 44 of their papers we have counts for

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hep-ph2006

Large mass expansion in two-loop QCD corrections of para-charmonium decay

K. Hasegawa, Alexey Pak

We calculate the two-loop QCD corrections to paracharmonium decays $e t a_{c} r i g h t a r r o w g amma g amma$ and $e t a_{c} r i g h t a r r o w g g$ involving light-by-light scattering diagrams with l…