Title:
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More nonperturbative corrections to the fine and hyperfine splitting in the heavy quarkorium
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Author:
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Pineda, Antonio
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Other authors:
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Universitat de Barcelona |
Abstract:
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Leading nonperturbative effects to fine and hyperfine splittings were calculated some time ago. Recently, they have been used in order to obtain realistic numerical results for the lower levels in bottomonium systems. We point out that a contribution of the same order
O
(
Λ
4
QCD
/
m
3
α
2
s
)
has been overlooked. We calculate it in this paper. |
Subject(s):
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-Partícules (Física nuclear) -Particles (Nuclear physics) |
Rights:
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(c) The American Physical Society, 1997
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Document type:
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Article Article - Published version |
Published by:
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Published for the American Physical Society by the American Institute of Physics
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