Production and decays of 146 GeV flavons into eμ final state at the LHC

IF 5 1区物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS

Journal of High Energy Physics Pub Date : 2023-11-02 DOI:10.1007/jhep11(2023)014

Niko Koivunen, Martti Raidal

引用次数: 2

Abstract

A bstract The CMS experiment at CERN has reported a possible signal for a resonance at 146 GeV decaying into the eμ final state which, presently, is the only experimental hint for lepton flavour violation in any low- and high-energy experiment. The Froggatt-Nielsen mechanism naturally predicts the existence of new scalars, the flavons, with flavour off-diagonal couplings. We study this framework in the context of the CMS result and find that the minimal, purely leptophilic model is too restricted to match the claimed signal. Thereafter we show how models with additional flavon couplings to quarks can explain the claimed signal while satisfying all the existing constraints on lepton flavour violation.

查看原文本刊更多论文

146 GeV黄酮类化合物在大型强子对撞机中的产生和衰变

欧洲核子研究中心(CERN)的CMS实验报告了一个可能的146 GeV共振信号，该信号衰减到eμ终态，这是目前在任何低能和高能实验中唯一的轻子味破坏的实验暗示。Froggatt-Nielsen机制自然地预测了新标量的存在，即具有风味非对角线耦合的黄酮。我们在CMS结果的背景下研究了这个框架，并发现最小的纯嗜瘦模型太受限制，无法匹配所声称的信号。此后，我们展示了与夸克有额外黄素耦合的模型如何在满足所有现有的轻子风味违反约束的情况下解释所声称的信号。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of High Energy Physics PHYSICS, PARTICLES & FIELDS-

CiteScore

10.00

自引率

46.30%

发文量

2107

审稿时长

12 weeks

期刊介绍： The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal. Consequently, the Advisory and Editorial Boards, composed of distinguished, active scientists in the field, jointly establish with the Scientific Director the journal''s scientific policy and ensure the scientific quality of accepted articles. JHEP presently encompasses the following areas of theoretical and experimental physics: Collider Physics Underground and Large Array Physics Quantum Field Theory Gauge Field Theories Symmetries String and Brane Theory General Relativity and Gravitation Supersymmetry Mathematical Methods of Physics Mostly Solvable Models Astroparticles Statistical Field Theories Mostly Weak Interactions Mostly Strong Interactions Quantum Field Theory (phenomenology) Strings and Branes Phenomenological Aspects of Supersymmetry Mostly Strong Interactions (phenomenology).