#7424. The diphoton qT spectrum at N 3 LL ? + NNLO

October 2026publication date
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Journal’s subject area:
Engineering (miscellaneous);
Physics and Astronomy (miscellaneous);
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Abstract:
We present a resummed calculation of diphoton production. To reach the primed level of accuracy we have implemented the recently published three-loop O(?s3) virtual corrections in the qq? channel and the three-loop transverse momentum dependent beam functions and combined them with the existing infrastructure of CuTe-MCFM, a code performing resummation at order N3LL. While the primed predictions are parametrically not more accurate, one typically observes from lower orders and other processes that they are the dominant effect of the next order.
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