三粒子 B-Meson 软函数的重正化群演化。

IF 8.1 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Physical review letters Pub Date : 2024-10-25 DOI:10.1103/PhysRevLett.133.171901

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

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引用次数: 0

摘要

我们首次确定了三粒子 B-介子软函数的重正化群方程，该方程决定了双辐射 B-介子衰变的远距离企鹅贡献的非微扰强相互作用动力学。这一基本软函数的紫外重正化的显著特点在于，在任意初始条件下，正支持与负支持的混合模式。然后利用拉普拉斯变换技术推导出这一整数微分演化方程的精确解，从而可以在与模型无关的情况下提取大小粒子矩的渐近行为。

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

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.

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来源期刊

Physical review letters 物理-物理：综合

CiteScore

16.50

自引率

7.00%

发文量

2673

审稿时长

2.2 months

期刊介绍： Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks