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The KL-KS mass difference

Bijnens, Johan LU orcid ; Gérard, Jean Marc and Klein, Gerhard (1991) In Physics Letters B 257(1-2). p.191-195
Abstract

The matching of the log and short distance contributions to the KL-KS mass difference is investigated in the large Nc limit (Nc being the number of colours). In this limit a physically well defined separation between the two regimes exists. This allows for an investigation of the matching between the two contributions. We obtain that 0.8±0.1 of the observed mass difference is due to the light and charm quarks contribution. An estimate of the top and top-charm contributions is also given.

Please use this url to cite or link to this publication:
author
; and
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics Letters B
volume
257
issue
1-2
pages
5 pages
publisher
Elsevier
external identifiers
  • scopus:0001629346
ISSN
0370-2693
DOI
10.1016/0370-2693(91)90880-Y
language
English
LU publication?
no
id
b62726c4-e772-4a3b-9227-43dcbea35303
date added to LUP
2019-05-03 09:37:44
date last changed
2025-10-14 09:04:55
@article{b62726c4-e772-4a3b-9227-43dcbea35303,
  abstract     = {{<p>The matching of the log and short distance contributions to the K<sub>L</sub>-K<sub>S</sub> mass difference is investigated in the large N<sub>c</sub> limit (N<sub>c</sub> being the number of colours). In this limit a physically well defined separation between the two regimes exists. This allows for an investigation of the matching between the two contributions. We obtain that 0.8±0.1 of the observed mass difference is due to the light and charm quarks contribution. An estimate of the top and top-charm contributions is also given.</p>}},
  author       = {{Bijnens, Johan and Gérard, Jean Marc and Klein, Gerhard}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{1-2}},
  pages        = {{191--195}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters B}},
  title        = {{The K<sub>L</sub>-K<sub>S</sub> mass difference}},
  url          = {{http://dx.doi.org/10.1016/0370-2693(91)90880-Y}},
  doi          = {{10.1016/0370-2693(91)90880-Y}},
  volume       = {{257}},
  year         = {{1991}},
}