PT Journal
AU Dhani, PK
   Rodrigo, G
   Sborlini, GFR
TI Triple-collinear splittings with massive particles
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2023
BP 188
EP 20pp
VL 12
IS 12
DI 10.1007/JHEP12(2023)188
LA English
DE Factorization; Renormalization Group; Higher-Order Perturbative Calculations; Quark Masses; Resummation
AB We analyze in detail the most singular behaviour of processes involving triple-collinear splittings with massive particles in the quasi-collinear limit, and present compact expressions for the splitting amplitudes and the corresponding splitting kernels at the squared-amplitude level. Our expressions fully agree with well-known triple-collinear splittings in the massless limit, which are used as a guide to achieve the final expressions. These results are important to quantify dominant mass effects in many observables, and constitute an essential ingredient of current high-precision computational frameworks for collider phenomenology.
ER