Journal article
Chi(c) decays and the gluon component of the eta', eta mesons
- Abstract:
- The large mass of the η′meson indicates that a sizeable gluon component is present in the meson wave function. However, the χc0and χc2decays to η′mesons, which proceed via a purely gluonic intermediate state and we would therefore naïvely expect to be enhanced by such a component, are in fact relatively suppressed. We argue that this apparent contradiction may be resolved by a proper treatment of interference effects in the decay. In particular, by accounting for the destructive interference between the quark and gluon components of the η′distribution function, in combination with a model for strange quark mass effects, we demonstrate that the observed χc(0,2)→η(′)η(′) branching ratios can be reproduced for a reasonable gluon component of the η′, η mesons.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 242.7KB, Terms of use)
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- Publisher copy:
- 10.1016/j.physletb.2017.04.046
Authors
+ Science and Technology Facilities Council
More from this funder
- Funding agency for:
- Harland-Lang, LA
- Grant:
- ST/L000377/1
- Publisher:
- Elsevier
- Journal:
- Physics Letters B More from this journal
- Volume:
- 770
- Pages:
- 88-92
- Publication date:
- 2017-04-26
- Acceptance date:
- 2017-04-20
- DOI:
- EISSN:
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1873-2445
- ISSN:
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0370-2693
- Keywords:
- Pubs id:
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pubs:734146
- UUID:
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uuid:8d48bfe0-c216-4c55-8cbc-4bb94155bf49
- Local pid:
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pubs:734146
- Source identifiers:
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734146
- Deposit date:
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2018-10-17
- ARK identifier:
Terms of use
- Copyright holder:
- Harland-Lang et al
- Copyright date:
- 2017
- Notes:
- © 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
- Licence:
- CC Attribution (CC BY)
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