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Next-to-leading power SCET in Higgs amplitudes induced by light quarks
by Xing Wang
Submission summary
| Authors (as registered SciPost users): | Xing Wang |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2110.05174v1 (pdf) |
| Date accepted: | Feb. 16, 2022 |
| Date submitted: | Oct. 12, 2021, 9:35 a.m. |
| Submitted by: | Xing Wang |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 15th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology (RADCOR2021) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Phenomenological |
Abstract
In this article, we report how to use the "plus-type" subtraction scheme to deal with endpoint divergences in $h\rightarrow\gamma\gamma$ or $gg\rightarrow h$ amplitudes induced by light quark loop, which can be formulated by next-to-leading power (NLP) SCET. This subtraction is ensured by two re-factorization conditions, which have been proven to all orders in $\alpha_s$. Based on these conditions, cutoffs emerge naturally after some re-arrangements to handle endpoint divergences and renormalization is compatible with that. Our formalism can analytically reproduce three-loop amplitudes up to $\ln^3(-M_h^2/m_b^2-i0)$ and resum to next-to-leading logarithm and beyond.
Published as SciPost Phys. Proc. 7, 040 (2022)
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