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arXiv · 2310.05803

Triple-collinear splittings with massive particles

Prasanna K. Dhani·Germán Rodrigo·German F. R. Sborlini
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Abstract

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.

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Prasanna K. Dhani, Germán Rodrigo, German F. R. Sborlini. 2023-10-09. Triple-collinear splittings with massive particles. https://doi.org/10.1007/jhep12(2023)188

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