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Validity of chiral perturbation theory for K0-K0 mixing

Bijnens, Johan LU orcid ; Sonoda, Hidenori and Wise, Mark B. (1984) In Physical Review Letters 53(25). p.2367-2370
Abstract

Chiral perturbation theory relates the |S|=2 matrix element K0|(sd)V-A×(sd)V-A|K0 to the |S|=1 matrix element +0|(sd)V-A(uu)V-A+(su)V- A×(ud)V-A-(sd)V-A(dd)V-A|K+. The latter matrix element is measured in K++0 decay and the former matrix element is relevant for the predictions that the standard model makes for CP nonconservation in K0-K0 mixing. In this paper the corrections of order mK4 lnmK2 to lowest-order chiral perturbation theory (i.e., order mK2) for these matrix elements are computed. The correction is large for the |S|=2 matrix element indicating a breakdown of chiral perturbation theory.

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author
; and
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
53
issue
25
pages
4 pages
publisher
American Physical Society
external identifiers
  • scopus:0010783825
ISSN
0031-9007
DOI
10.1103/PhysRevLett.53.2367
language
English
LU publication?
no
id
3338925d-781c-4031-af48-6c1c9d6a821b
date added to LUP
2019-05-03 09:20:15
date last changed
2021-06-20 05:28:41
@article{3338925d-781c-4031-af48-6c1c9d6a821b,
  abstract     = {{<p>Chiral perturbation theory relates the |S|=2 matrix element K0|(sd)V-A×(sd)V-A|K0 to the |S|=1 matrix element +0|(sd)V-A(uu)V-A+(su)V- A×(ud)V-A-(sd)V-A(dd)V-A|K+. The latter matrix element is measured in K++0 decay and the former matrix element is relevant for the predictions that the standard model makes for CP nonconservation in K0-K0 mixing. In this paper the corrections of order mK4 lnmK2 to lowest-order chiral perturbation theory (i.e., order mK2) for these matrix elements are computed. The correction is large for the |S|=2 matrix element indicating a breakdown of chiral perturbation theory.</p>}},
  author       = {{Bijnens, Johan and Sonoda, Hidenori and Wise, Mark B.}},
  issn         = {{0031-9007}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{25}},
  pages        = {{2367--2370}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Validity of chiral perturbation theory for K0-K0 mixing}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.53.2367}},
  doi          = {{10.1103/PhysRevLett.53.2367}},
  volume       = {{53}},
  year         = {{1984}},
}