A precise sum rule among four B→Kπ CP asymmetries

A precise sum rule among four B→Kπ CP asymmetries

A sum rule relation is proposed for direct CP asymmetries in B→Kπ decays. Leading terms are identical in the isospin symmetry limit, while subleading terms are equal in the flavor SU(3) and heavy quark limits. The sum rule predicts ACP(B0→K0π0)=−0.17±0.06 using current asymmetry measurements for the...

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Veröffentlicht in:Physics letters. B 2005-10, Vol.627 (1-4), p.82-88
1. Verfasser: Gronau, Michael
Format: Artikel
Sprache:eng
Schlagworte:
ASYMMETRY
Exact sciences and technology
ISOSPIN
Nuclear physics
Phenomenology-HEP,HEPPH
PHYSICS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUARKS
SUM RULES
SYMMETRY
The physics of elementary particles and fields
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Zusammenfassung:A sum rule relation is proposed for direct CP asymmetries in B→Kπ decays. Leading terms are identical in the isospin symmetry limit, while subleading terms are equal in the flavor SU(3) and heavy quark limits. The sum rule predicts ACP(B0→K0π0)=−0.17±0.06 using current asymmetry measurements for the other three B→Kπ decays. A violation of the sum rule would be evidence for new physics in b→sq¯q transitions.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2005.09.014