Implications of a precise measurement of the Z width on the spontaneous breaking of global symmetries

M. C. Gonzalez-Garcia; Yosef Nir

doi:10.1016/0370-2693(89)90761-2

Implications of a precise measurement of the Z width on the spontaneous breaking of global symmetries

M. C. Gonzalez-Garcia
, Yosef Nir

Institute for Theoretical Physics

SLAC National Accelerator Laboratory

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

We study global symmetries which are spontaneously broken by Higgs non-singlets. In most cases, there is a significant contribution to the invisible decay width of the Z boson. The recent measurement of this quantity by the MARK II Collaboration excludes, in a model independent way, spontaneous breaking due to almost all scalars with hyperchange larger than or equal to 1.

Original language	English
Pages (from-to)	383-386
Number of pages	4
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	232
Issue number	3
DOIs	https://doi.org/10.1016/0370-2693(89)90761-2
State	Published - Dec 7 1989

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title = "Implications of a precise measurement of the Z width on the spontaneous breaking of global symmetries",

abstract = "We study global symmetries which are spontaneously broken by Higgs non-singlets. In most cases, there is a significant contribution to the invisible decay width of the Z boson. The recent measurement of this quantity by the MARK II Collaboration excludes, in a model independent way, spontaneous breaking due to almost all scalars with hyperchange larger than or equal to 1.",

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N2 - We study global symmetries which are spontaneously broken by Higgs non-singlets. In most cases, there is a significant contribution to the invisible decay width of the Z boson. The recent measurement of this quantity by the MARK II Collaboration excludes, in a model independent way, spontaneous breaking due to almost all scalars with hyperchange larger than or equal to 1.

AB - We study global symmetries which are spontaneously broken by Higgs non-singlets. In most cases, there is a significant contribution to the invisible decay width of the Z boson. The recent measurement of this quantity by the MARK II Collaboration excludes, in a model independent way, spontaneous breaking due to almost all scalars with hyperchange larger than or equal to 1.

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3

ER -

Implications of a precise measurement of the Z width on the spontaneous breaking of global symmetries

Abstract

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