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Annihilation effects in B→ππ from QCD light-cone sum rules

Khodjamirian, A.; Mannel, Th.; Melcher, M.; Melić, Blaženka (2005) Annihilation effects in B→ππ from QCD light-cone sum rules. Physical Review D, 72 (9). 094012-1-094012-20. ISSN 1550-7998

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Using the method of QCD light-cone sum rules, we calculate the B→ππ hadronic matrix elements with annihilation topology. We obtain a finite result, including the related strong phase. Numerically, the annihilation effects in B→ππ turn out to be small with respect to the factorizable emission mechanism. Our predictions, together with the earlier sum rule estimates of emission and penguin contributions, are used for the phenomenological analysis of B→ππ channels. We predict a ΔI=1/2 transition amplitude which significantly differs from this amplitude extracted from the current data.

Item Type: Article
Uncontrolled Keywords: meson form-factors; CP violation; heavy-quark; distribution amplitude; resonance physics; exclusive decays; perturbative QCD; B-decays; pion; factorization
Subjects: NATURAL SCIENCES > Physics
NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
NATURAL SCIENCES > Physics > Astronomy and Astrophysics
Divisions: Theoretical Physics Division
Depositing User: Blaženka Melić
Date Deposited: 02 May 2013 10:47
DOI: 10.1103/PhysRevD.72.094012

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