Role of Final State Interactions in the B Meson Decay Into Two Pions

Deandrea, Aldo; Ladisa, Massimo; Nardulli, G.; Laporta, V.; Santorelli, Pietro

doi:10.1142/s0217751x0603401x

Cited by 11 publications

(13 citation statements)

References 41 publications

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“…This analysis shows that the long distance charming penguins do not play important role. However, the long distance effects due to the light meson rescattering are very important in obtaining correct rates for B → ππ decays [20], in agreement with the result of our calculation.…”

Section: Discussionsupporting

confidence: 90%

“…[20] estimated the effects of final state interactions using the Regge model. This analysis shows that the long distance charming penguins do not play important role.…”

Section: Discussionmentioning

confidence: 99%

“…Among them the B → ππ decays are particularly interesting [1,2]. Many theoretical frameworks such as perturbative QCD approach of Beneke, Buchalla, Neubert and Sachrajda (BBNS) [3] and the approach of [4], Soft Collinear Effective Theory (SCET) [5][6][7][8][9] and many others [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] have attempted to understand the observed decay rates. Within QCD factorization charmless two body decays of B mesons have amplitudes which factorize at lowest order in 1/m b .…”

Section: Introductionmentioning

confidence: 99%

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Charmless final state interaction inB→ππdecays

2005

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We estimate effects of the final state interactions in B → ππ decays coming from rescattering of ππ via exchange of ρ, σ, f 0 mesons. Then we include the ρρ rescattering via exchange of π, ω, a 1 mesons and finally we consider contributions of the a 1 π rescattering via exchange of ρ. The absorptive parts of amplitudes for these processes are determined. In the case of π + π − decay mode, due to model uncertainties, the calculated contribution is |M A | ≤ 1.7 × 10 −8 GeV. This produces a small relative strong phase for the tree and color-suppressed B → ππ amplitudes consistent with the result of a recent phenomenological analysis based on the BaBar and Belle results for the B → ππ branching ratios and CP asymmetries.

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Section: Discussionsupporting

confidence: 90%

“…[20] estimated the effects of final state interactions using the Regge model. This analysis shows that the long distance charming penguins do not play important role.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Charmless final state interaction inB→ππdecays

2005

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“…On the other hand, the formal analysis of different classes of Feynman diagrams, including soft rescatterings [11,12], show that the diagrams with pomeron exchange in the FSI-amplitudes do not decrease as M Q increases. The same conclusions follow from the applications of generalizations of MW-theorem [13,14].…”

Section: B → ππ/B → ρρ Puzzlesupporting

confidence: 67%

On the role of the final-state interactions in rare B decays

Kaidalov¹,

Vysotsky²

2009

Phys. Atom. Nuclei

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The effects of final state interactions (FSI) in hadronic B-decays are investigated. The model for FSI, based on Regge phenomenology of high-energy hadronic interactions is proposed. It is shown that this model explains the pattern of phases in matrix elements of B → ππ and B → ρρ decays. These phases play an important role for CP-violation in B-decays. The most precise determination of the unitarity triangle angle α from B d → ρπ decays is performed. The relation between CP-asymmetries in B → Kπ decays is discussed. It is emphasized that the large distance FSI can explain the structure of polarizations of the vector mesons in B-decays and other puzzles like a very large branching ratio of the B-decay toΞ c Λ c .

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“…decay modes in the Regge model [45]. Different methods for detection and measurement of new physics in π π → B decays have been studied in [46].…”

mentioning

confidence: 99%