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Title: Radiative decays and the nature of heavy quarkonium
Author: Garcia i Tormo, Xavier
Soto Riera, Joan
Keywords: Partícules (Física nuclear)
Fenomenologia (Física)
Particles (Nuclear physics)
Phenomenological theory (Physics)
Issue Date: 2006
Publisher: American Physical Society
Abstract: We argue that the photon spectra in radiative decays of various heavy quarkonium states provide important information on their nature. If two of these states are in the strong coupling regime, we are able to produce a parameter-free model-independent formula, which holds at next-to-leading order and includes both direct and fragmentation contributions. When the formula is checked against recent CLEO data it favors Υ ( 2 S ) and Υ ( 3 S ) in the strong coupling regime and disfavors Υ ( 1 S ) in it.
Note: Reproducció digital del document proporcionada per PROLA i
It is part of: Physical Review Letters, 2006, vol. 96, núm. 11, p. 111801-1-111801-4
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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