Z玻色子有更轻的表亲吗？

IF 5.3 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-04-15 DOI:10.1103/physrevd.111.073005

Jeff Greensite

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引用次数: 0

摘要

在晶格的猝灭电弱理论中，我构造了一组物理光子态和Z玻色子态重叠的物理态。这是通过使用协变晶格拉普拉斯算子的特征态，以及希格斯和晶格连接变量来构建规范不变向量玻色子创建算子来实现的。在希尔伯特空间的子空间中对角化传递矩阵，可以得到一个无质量光子和一个有质量的Z粒子。但在数值数据中，有证据表明谱中有更多的矢量玻色子，尽管它们的质量有相当大的不确定性，最低的有限质量粒子在3-4 GeV的范围内。2025年由美国物理学会出版

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Does the Z boson have a lighter cousin?

In the quenched electroweak theory on the lattice I construct a set of physical states which overlap the physical photon and Z boson states. This is done by employing eigenstates of the covariant lattice Laplacian, in addition to the Higgs and lattice link variables, to construct gauge invariant vector boson creation operators. Diagonalizing the transfer matrix in the subspace of Hilbert space spanned by this set yields a massless photon and massive Z particle, as expected. But in the numerical data there is evidence for more vector bosons in the spectrum, albeit with considerable uncertainty in their masses, with the lowest finite mass particle in the range of 3–4 GeV.

Published by the American Physical Society

2025

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.