Heavy-Quark Hybrid Mass Splittings: Hyperfine and “Ultrafine”

Richard Lebed; Eric S. Swanson

doi:10.1007/s00601-018-1376-9

Heavy-Quark Hybrid Mass Splittings: Hyperfine and “Ultrafine”

Richard Lebed, Eric S. Swanson

Physics

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

6 Scopus citations

Abstract

It is argued that the heavy-quark limit of QCD requires a certain combination of hyperfine mass splittings in heavy-quark hybrid-meson multiplets to be unusually small. This observation will assist in the exploration of the heavy-quark hybrid spectrum at facilities such as PANDA. Alternatively, a large measured value for this mass splitting indicates that at least one member of the multiplet must contain significant light-quark degrees of freedom.

Original language	English (US)
Article number	53
Journal	Few-Body Systems
Volume	59
Issue number	4
DOIs	https://doi.org/10.1007/s00601-018-1376-9
State	Published - Jul 1 2018

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Heavy-Quark Hybrid Mass Splittings: Hyperfine and “Ultrafine”",

abstract = "It is argued that the heavy-quark limit of QCD requires a certain combination of hyperfine mass splittings in heavy-quark hybrid-meson multiplets to be unusually small. This observation will assist in the exploration of the heavy-quark hybrid spectrum at facilities such as PANDA. Alternatively, a large measured value for this mass splitting indicates that at least one member of the multiplet must contain significant light-quark degrees of freedom.",

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note = "Funding Information: This work was supported by the National Science Foundation under Grant No. PHY-1403891. Publisher Copyright: {\textcopyright} 2018, Springer-Verlag GmbH Austria, part of Springer Nature.",

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Heavy-Quark Hybrid Mass Splittings: Hyperfine and “Ultrafine”

Abstract

ASJC Scopus subject areas

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