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QCD isospin breaking in meson masses, decay constants and quark mass ratios

Amoros, G. ; Bijnens, J. LU orcid and Talavera, P. (2001) In Nuclear Physics B 602(1-2). p.87-108
Abstract

The procedure to calculate masses and matrix-elements in the presence of mixing of the basis states is explained in detail. We then apply this procedure to the two-loop calculation in Chiral Perturbation Theory of pseudoscalar masses and decay constants including quark mass isospin breaking. These results are used to update our analysis of Kℓ4 done previously and obtain a value of mu/md in addition to values for the low-energy-constants Li
r.

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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
11.30.Rd, 12.15.Ff, 12.39.Fe, 13.20.Eb
in
Nuclear Physics B
volume
602
issue
1-2
pages
22 pages
publisher
Elsevier
external identifiers
  • scopus:0001791857
ISSN
0550-3213
DOI
10.1016/S0550-3213(01)00121-3
language
English
LU publication?
yes
id
22bdc9dc-b0bb-4818-a0fd-de170b58b695
date added to LUP
2019-05-03 08:58:39
date last changed
2025-03-19 13:18:18
@article{22bdc9dc-b0bb-4818-a0fd-de170b58b695,
  abstract     = {{<p>The procedure to calculate masses and matrix-elements in the presence of mixing of the basis states is explained in detail. We then apply this procedure to the two-loop calculation in Chiral Perturbation Theory of pseudoscalar masses and decay constants including quark mass isospin breaking. These results are used to update our analysis of K<sub>ℓ4</sub> done previously and obtain a value of m<sub>u</sub>/m<sub>d</sub> in addition to values for the low-energy-constants L<sub>i</sub><br>
                            <sup>r</sup>.</p>}},
  author       = {{Amoros, G. and Bijnens, J. and Talavera, P.}},
  issn         = {{0550-3213}},
  keywords     = {{11.30.Rd; 12.15.Ff; 12.39.Fe; 13.20.Eb}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{1-2}},
  pages        = {{87--108}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Physics B}},
  title        = {{QCD isospin breaking in meson masses, decay constants and quark mass ratios}},
  url          = {{http://dx.doi.org/10.1016/S0550-3213(01)00121-3}},
  doi          = {{10.1016/S0550-3213(01)00121-3}},
  volume       = {{602}},
  year         = {{2001}},
}