APA (7th ed.) Citation

Becchetti, M., Coro, F., Nega, C., Tancredi, L., & Wagner, F. J. Analytic two-loop amplitudes for q q ¯ → γγ $$ q\overline{q}\to \gamma \gamma $$ and gg → γγ mediated by a heavy-quark loop. SpringerOpen.

Chicago Style (17th ed.) Citation

Becchetti, Matteo, Federico Coro, Christoph Nega, Lorenzo Tancredi, and Fabian J. Wagner. Analytic Two-loop Amplitudes for Q Q ¯ → γγ $$ Q\overline{q}\to \gamma \gamma $$ and Gg → γγ Mediated by a Heavy-quark Loop. SpringerOpen.

MLA (9th ed.) Citation

Becchetti, Matteo, et al. Analytic Two-loop Amplitudes for Q Q ¯ → γγ $$ Q\overline{q}\to \gamma \gamma $$ and Gg → γγ Mediated by a Heavy-quark Loop. SpringerOpen.