Extraction of the CKM phase γ from the charmless two-body B meson decays *

Zhou, Si-Hong; Lu, Chunhua

doi:10.1088/1674-1137/44/6/063101

Cited by 6 publications

(2 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As explained before, a π P 4 is not considered here, because it cannot be constrained effectively under the current experimental accuracy. It is worth mentioning that the weak phase φ 3 (γ) is found to be (75.1 ± 2.9) • , consistent with the value (72.1 +4.1 −4.5 ) • in Particle Data Group [26], and (69.8 ± 2.1 ± 0.9) • from the factorization-assisted topological diagram approach [59]. The agreements of our results with the Gegenbauer moments from sum rules and with φ 3 (γ) extracted in other methods support the PQCD factorization for hadronic two-body B meson decays.…”

Section: Global Fitsupporting

confidence: 82%

Global Analysis of hadronic two-body B decays in the perturbative QCD approach

Hua,

Li,

et al. 2020

Preprint

View full text Add to dashboard Cite

Based on the flavor structure of four-quark effective operators, we develop an automatic computation program to calculate hadronic two-body B meson decay amplitudes, and apply it to their global analysis in the perturbative QCD (PQCD) approach. Fitting the PQCD factorization formulas for B → P P, V P decays at leading order in the strong coupling αs to measured branching ratios and direct CP asymmetries, we determine the Gegenbauer moments in light meson light-cone distribution amplitudes (LCDAs). It is found that most of the fitted Gegenbauer moments of the twist-2 and twist-3 LCDAs for the pseudoscalar meson P (P = π, K) and vector meson V (V = ρ, K * ) agree with those derived in QCD sum rules. The shape parameter for the Bs meson distribution amplitude and the weak phase φ3(γ) = (75.1 ± 2.9) • consistent with the value in Particle Data Group are also obtained. It is straightforward to extend our analysis to higher orders and higher powers in the PQCD approach, and to the global determination of LCDAs for other hadrons.

show abstract

Section: Global Fitsupporting

confidence: 82%

Global Analysis of hadronic two-body B decays in the perturbative QCD approach

Hua,

Li,

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…A global fit with all experimental data of these decays to extract the topological amplitudes including the nonfactorizable QCD contributions as well as the SU (3) breaking effects is performed [40]. This so-called FAT approach [4,[40][41][42][43][44] gives the most precise decay amplitudes of the two body B meson decays with charmed meson final states.…”

Section: Introductionmentioning

confidence: 99%

Analysis of three-body charmed B meson decays under the factorization-assisted topological-amplitude approach

Zhou,

Li,

Wei

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

We analyze the quasi-two-body charmed B decays B +,0 (s) → D * (s) P 2 → D (s) P 1 P 2 with P 1,2 as a pion or kaon. The intermediate processes B (s) → D * (s) P 2 are calculated with the factorizationassisted topological-amplitude approach and the resonant effects are calculated with the Breit-Wigner formalism. Taking all p-wave resonance states D * (s) into consideration, we present the related branching fractions, calculate the Breit-Wigner-Tail effects, and investigate the flavor SU (3) breaking effects. Most of our branching fractions are consistent with the perturbative QCD approach's predictions as well as the current experimental data. With more precision calculation of the intermediate two body charmed B meson decays, our quasi-two-body B decays calculation has significantly less theoretical uncertainty than the perturbative QCD approach. Many of those channels without any experimental data will be confronted with the future more accurate experiment measurements. Our results of the Breit-Wigner-tail effects also agree with the experimental very well. In B 0 decays this effect can reach approximately to 5%. It is also found that the Breit-Wigner-tail effects are not sensitive to the widths of their corresponding resonances. The flavor SU (3) symmetry breaking effect is also investigated.

show abstract

Global analysis of hadronic two-body B decays in the perturbative QCD approach

Hua

et al. 2021

Phys. Rev. D

View full text Add to dashboard Cite

Extraction of the CKM phase γ from the charmless two-body B meson decays *

Abstract: Using all experimentally measured charmless , decay modes, where denotes a light pseudoscalar (vector) meson, we extract the CKM angle by a global fit. All hadronic parameters are determined from the experimental data, such that the app… Show more

Cited by 6 publications

References 86 publications

Global Analysis of hadronic two-body B decays in the perturbative QCD approach

Global Analysis of hadronic two-body B decays in the perturbative QCD approach

Analysis of three-body charmed B meson decays under the factorization-assisted topological-amplitude approach

Global analysis of hadronic two-body B decays in the perturbative QCD approach

Contact Info

Product

Resources

About