Upper bounds on ε′/ε parameters B6(1/2) and B8(3/2) from large N QCD and other news
A bstract We demonstrate that in the large N approach developed by the authors in collaboration with Bardeen, the parameters B 6 (1/2) and B 8 (3/2) parametrizing the K → ππ matrix elements 〈 Q 6 〉 0 and 〈 Q 8 〉 2 of the dominant QCD and electroweak operators receive both negative O 1 / N correction...
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| Veröffentlicht in: | The journal of high energy physics 2015-12, Vol.2015 (12), p.1-20 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | A
bstract
We demonstrate that in the large
N
approach developed by the authors in collaboration with Bardeen, the parameters
B
6
(1/2)
and
B
8
(3/2)
parametrizing the
K
→
ππ
matrix elements 〈
Q
6
〉
0
and 〈
Q
8
〉
2
of the dominant QCD and electroweak operators receive both
negative
O
1
/
N
corrections such that
B
6
(1/2)
≤
B
8
(3/2)
|
|---|---|
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP12(2015)008 |