令人费解的b衰变中的右手相互作用

IF 4.5 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Physics Letters B Pub Date : 2025-02-01 Epub Date: 2025-01-27 DOI:10.1016/j.physletb.2025.139285

Damir Bečirević , Svjetlana Fajfer , Nejc Košnik , Lovre Pavičić

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引用次数: 0

摘要

我们通过引入对夸克和轻子的右手相互作用，解释了b→cτν过程和b→Kνν¯的测量衰变宽度与标准模型中预测的值之间的差异。在低能尺度上，除了标准模型粒子之外，我们假设存在额外的中性轻子（右手中微子）。然后，我们在一个单标量轻夸克（S1）模型中展示了这种场景的具体实现，并讨论了相应的现象学。

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Right-handed interactions in puzzling B-decays

We explain the difference between the measured decay widths of

b \to c τ ν

processes and of

B \to K ν \bar{ν}

and their values predicted in the Standard Model by introducing the right-handed interactions both to quarks and to leptons. At low energy scales, in addition to the Standard Model particles, we assume the presence of an additional neutral lepton (right-handed neutrino). We then show a specific realization of such a scenario in a model with a single scalar leptoquark (

S_{1}

), and discuss the corresponding phenomenology.

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来源期刊

Physics Letters B 物理-物理：综合

CiteScore

9.10

自引率

6.80%

发文量

647

审稿时长

3 months

期刊介绍： Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.