“\(B\rightarrow K\pi \)谜题”：一个新的视角

IF 4.2 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2024-12-26 DOI:10.1140/epjc/s10052-024-13709-2

Adam Szabelski

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引用次数: 0

摘要

基于\(B\rightarrow K\pi \)、\(B\rightarrow \pi \pi \)和\(B\rightarrow KK\)数据集已发表的分支分数和CP不对称观测值进行了现象学分析。采用拓扑图的幅度分解和SU(3)不可约表示。全局拟合的结果可以解释为“\(B\rightarrow K\pi \)谜题”的解决方案。获得的精度允许测试基于SU(3)的求和规则，该规则显示\(6\sigma \)与标准模型场景中的期望值的差异。为了改进已获得的结果，主要工作应集中在\(B^0\rightarrow K^0\pi ^0\)测量上。

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The “\(B\rightarrow K\pi \) puzzle”: a new perspective

A phenomenological analysis based on the published branching fractions and CP asymmetry observables of the \(B\rightarrow K\pi \), \(B\rightarrow \pi \pi \) and \(B\rightarrow KK\) dataset is performed. The amplitude decomposition by the topological diagrams and the SU(3) irreducible representation is used. The result of the global fit can be interpreted as a solution to the “\(B\rightarrow K\pi \) puzzle”. The obtained precision enables to test a SU(3)-based sum rule showing \(6\sigma \) discrepancy with the expectation value in the Standard Model scenario. To improve the obtained results the main effort should concentrate on the \(B^0\rightarrow K^0\pi ^0\) measurements.

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.