$The P-wave charmonium annihilation into two photons $$\chi _{c0, c2}\rightarrow \gamma \gamma $$ χ c 0 , c 2 → γ γ with high-order QCD corrections$

The P-wave charmonium annihilation into two photons $$\chi _{c0, c2}\rightarrow \gamma \gamma $$ χ c 0 , c 2 → γ γ with high-order QCD corrections

Abstract In this paper, we present a new analysis on the P-wave charmonium annihilation into two photons up to next-to-next-to-leading order (NNLO) QCD corrections by using the principle of maximum conformality (PMC). The conventional perturbative QCD prediction shows strong scale dependence and dev...

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Bibliographic Details
Main Authors:	Hua Zhou, Qing Yu, Xu-Dong Huang, Xu-Chang Zheng, Xing-Gang Wu
Format:	Article
Language:	English
Published:	SpringerOpen 2021-07-01
Series:	European Physical Journal C: Particles and Fields
Online Access:	https://doi.org/10.1140/epjc/s10052-021-09424-x

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