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Threshold resummation for double-deeply virtual Compton scattering

Schoenleber, J. [Brookhaven National Laboratory (BNL), Upton, NY (United States). RIKEN Research Center] (ORCID:0000000310590350)
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Abstract

The threshold region for double-deeply virtual Compton scattering (DDVCS) is discussed. I derive a resummation formula for the (partonic) threshold logarithms in the flavor non-singlet case. The resummations can be done by using (re)factorization theorems for the coefficient functions near the partonic thresholds. As a byproduct, we obtain the leading term in the threshold limit of the two-loop coefficient function in double-deeply-virtual Compton scattering, which agrees with the recent result from explicit calculation, providing a highly non-trivial cross-check.

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Schoenleber, J. [Brookhaven National Laboratory (BNL), Upton, NY (United States). RIKEN Research Center] (ORCID:0000000310590350). 2025-01-28. Threshold resummation for double-deeply virtual Compton scattering. https://doi.org/10.1007/jhep01(2025)142

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