Work

Renormalization-Group Evolution for the Three-Particle B -Meson Soft Function

Year: 2024

Type: article

Abstract: We determine for the first time the renormalization-group equation for the three-particle B-meson soft function dictating the nonperturbative strong interaction dynamics of the long-distance penguin contributions to the double radiative B-meson decays. The distinctive feature of the ultraviolet renormalization of this fundamental soft function consists in the pattern of mixing positive into negative support for an arbitrary initial condition. The exact solution to this integrodifferential evolution equation is then derived with the Laplace transform technique, allowing for the model-independent extraction of the asymptotic behavior at large and small partonic momenta.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.133.171901

Authors: Yong-Kang Huang, Yao Ji, Yue-Long Shen, Chao Wang, Yu-Ming Wang, Xue-Chen Zhao

Institutions: Nankai University, Technical University of Munich, Ocean University of China, Huai'an University

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,750

Funders: Deutsche Forschungsgemeinschaft, National Natural Science Foundation of China, Natural Science Foundation of Jiangsu Province, Natural Science Foundation of Shandong Province