NDLI: Strong Isospin Breaking in the Decay Constants of Heavy-Light Mesons from Local-Duality QCD Sum Rules

Content Provider	Semantic Scholar
Author	Lucha, Wolfgang Melikhov, Dmitri Simula, S.
Copyright Year	2018
Abstract	We explore, by a rather peculiar limit of QCD sum rules subject to a Borel transformation (realized by allowing the related Borel mass parameter to approach infinity), how the small difference of the masses of up and down quark translates into the leptonic decay constants of pseudoscalar or vector heavy-light mesons. For the charmed and bottom mesons, we find that the decay constants of their lowest-lying charged and neutral representatives should differ by an amount of the order of 1 MeV.
File Format	PDF HTM / HTML
DOI	10.22323/1.336.0116
Alternate Webpage(s)	https://arxiv.org/pdf/1810.12569v1.pdf
Alternate Webpage(s)	https://doi.org/10.22323/1.336.0116
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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