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An analysis of two-body non-leptonic B decays involving light mesons in the standard model
High Energy Physics - Phenomenology · Submitted 5 Jul 1997
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Thus, theoretical scenarios with a substantially enhanced Wilson coefficient of the chromomagnetic dipole operator (as compared to the SM) and/or those with a substantial color-singlet $c\bar{c}$ component in the wave function of $\eta^\prime$ are not required by these data.
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The abstract, sentence by sentence
We report a theoretical analysis of the exclusive non-leptonic decays of B mesons into two light mesons,some of which have been measured recently by the CLEO collaboration. Our analysis is carried out in the context of an effective Hamiltonian based on the Standard Model using next-to-leading order perturbative QCD calculations. Using a factorization ansatz for the hadronic matrix elements, we show that existing data are accounted for in this approach. Thus, theoretical scenarios with a substantially enhanced Wilson coefficient of the chromomagnetic dipole operator (as compared to the SM) and/or those with a substantial color-singlet $c\bar{c}$ component in the wave function of $\eta^\prime$ are not required by these data. Implications of some of these measurements for the parameters of the CKM matrix are presented.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We report a theoretical analysis of the exclusive non-leptonic decays of B mesons into two light mesons,some of which have been measured recently by the CLEO collaboration. | contribution 1.00 | 0.80 | 0.04 | asserted 0.99 |
| s1 | Our analysis is carried out in the context of an effective Hamiltonian based on the Standard Model using next-to-leading order perturbative QCD calculations. | method 0.99 | 0.84 | 0.03 | asserted 0.99 |
| s2 | Using a factorization ansatz for the hadronic matrix elements, we show that existing data are accounted for in this approach. | result 0.83 | 0.92 | 0.17 | asserted 1.00 |
| s3 | Thus, theoretical scenarios with a substantially enhanced Wilson coefficient of the chromomagnetic dipole operator (as compared to the SM) and/or those with a substantial color-singlet $c\bar{c}$ component in the wave function of $\eta^\prime$ are not required by these data. | interpretation 0.87 | 0.79 | 0.70 | asserted 0.97 |
| s4 | Implications of some of these measurements for the parameters of the CKM matrix are presented. | interpretation 0.49 | 0.81 | 0.05 | asserted 0.67 |
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The paper
Original abstract
We report a theoretical analysis of the exclusive non-leptonic decays of B mesons into two light mesons,some of which have been measured recently by the CLEO collaboration. Our analysis is carried out in the context of an effective Hamiltonian based on the Standard Model using next-to-leading order perturbative QCD calculations. Using a factorization ansatz for the hadronic matrix elements, we show that existing data are accounted for in this approach. Thus, theoretical scenarios with a substantially enhanced Wilson coefficient of the chromomagnetic dipole operator (as compared to the SM) and/or those with a substantial color-singlet $c\bar{c}$ component in the wave function of $\eta^\prime$ are not required by these data. Implications of some of these measurements for the parameters of the CKM matrix are presented.
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References
How the literature uses it
11 arXiv papers cite this in 12 sentences
Papers whose main result relates to this one's
States the same result 1 paper
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It is possible to account for all the data without invoking new physics, though future experiments will provide tighter constraints on the parameter space.
Papers citing it · 6 sentences without a confident label
Uses its method or tool 4 papers
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In Eq. [ref], the local matrix element $⟨η^(')(P)|s̅γ^μ(1-γ_5)s| 0⟩$ and $⟨η^(')(P)|d̅γ^μ(1-γ_5)d| 0⟩$ can be expressed by the decay constant $f^s_η^(')$ and $f^d_η^(')$ as [ref] [equation] where all the other parameters are listed below [equation] Then the amplitude of nonleptonic decays becomes [equation] The helicity amplitudes in the nonleptonic decay processes are defined as [equation] With the help of helicity amplitude, the total decay width of the spin-1/2 to spin-1/2 processes can be expressed as [equation] where $H^S_λ,λ^'=HV^S_λ,λ^'-HA^S_λ,λ^'$.
Two-body hadronic decays of Xi^{0}_c in light front approach · Nonleptonic decays · 1.00
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When $η^(')$ is generated from vacuum, the hadron matrix element is treated differently due to the SU(3) breaking [ref] : [equation] with $f_0/f_π=1.17$ and $f_8/f_π=1.26$.
Two-body nonleptonic decays of the heavy mesons in the factorization approach · The input · 0.83
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In the analysis, we use the generalized factorization method [ref] to evaluate the chromo-magnetic contribution to the decay amplitude, where the momentum which is transferred by the gluon of $O_8G$ is set $q^2 ≃M_B^2/2$.
Large CP Violation in B_s Meson Mixing with EDM constraint in Supersymmetry · Gluino Dominant Case · 1.00
Cites it as background 2 papers
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A number of ad-hoc mechanisms have been proposed ranging from the "intrinsic-charm" content of $η'$ [ref] to off-shell gluon production coupled with the QCD anomaly [ref] to mixing among pseudo-scalars $η'$-$η_c$ [ref] (see also [ref] for mixing among the pseudo-scalar mesons, particularly when $η_c$ is included).
A Phenomenological Model of Mesons for Charged Current Weak Decays · Introduction · 0.94
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These decays were investigated in the so-called naive factorization approach [ref] and the generalized factorization approach [ref] .
Charmless Two-body $B(B_s)\to VP$ decays In Soft-Collinear-Effective-Theory · Introduction · 0.95
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