On the trail of QCD exotics

Kamal K. Seth

doi:10.1016/s0375-9474(99)00579-5

On the trail of QCD exotics

Kamal K. Seth^*

^*Corresponding author for this work

Physics and Astronomy

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

2 Scopus citations

Abstract

QCD predicts the existence of 'exotic' structures, prominent among them being those with explicit gluonic degrees of freedom, such as qq̄g hybrids and gg gluons. We report here the discovery of J^PC - 1^+- mesons which must be exotic (most likely qq̄g) because qq̄ mesons can not have these quantum numbers. One such meson with mass ∼ 1370 MeV has been identified in its decay into ηπ^-, and a second with mass ∼ 1600 MeV has been identified in both ρπ^- and η^′π^- decay channels.

Original language	English (US)
Pages (from-to)	113c-118c
Journal	Nuclear Physics A
Volume	663-664
Issue number	1-2
DOIs	https://doi.org/10.1016/s0375-9474(99)00579-5
State	Published - Jan 31 2000

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/s0375-9474(99)00579-5

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title = "On the trail of QCD exotics",

abstract = "QCD predicts the existence of 'exotic' structures, prominent among them being those with explicit gluonic degrees of freedom, such as q{\=q}g hybrids and gg gluons. We report here the discovery of JPC - 1+- mesons which must be exotic (most likely q{\=q}g) because q{\=q} mesons can not have these quantum numbers. One such meson with mass ∼ 1370 MeV has been identified in its decay into ηπ-, and a second with mass ∼ 1600 MeV has been identified in both ρπ- and η′π- decay channels.",

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AB - QCD predicts the existence of 'exotic' structures, prominent among them being those with explicit gluonic degrees of freedom, such as qq̄g hybrids and gg gluons. We report here the discovery of JPC - 1+- mesons which must be exotic (most likely qq̄g) because qq̄ mesons can not have these quantum numbers. One such meson with mass ∼ 1370 MeV has been identified in its decay into ηπ-, and a second with mass ∼ 1600 MeV has been identified in both ρπ- and η′π- decay channels.

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On the trail of QCD exotics

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