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The masses of the(0^{++})and(0^{-+})light-quark hybrids using QCD sum rules

โœ Scribed by Tao Huang; Hongying Jin; Ailin Zhang


Publisher
Springer-Verlag
Year
1999
Tongue
English
Weight
140 KB
Volume
8
Category
Article
ISSN
1434-6044

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In what follows, we explore existing sum rule analyses of the u, d and s quark masses. We argue that certain assumptions about the behavior of unmeasured continuum scalar and pseudoscalar spectral functions can lead to significant overestimates of these masses, and illustrate the source of the probl