Studying the localized CP violation and the branching fraction of the 
					
	    
	    
	   decay *

Qi, Jing-Juan; Wang, Zhenyang; Xu, Jing; Guo, Xin-Heng

doi:10.1088/1674-1137/abac00

Cited by 9 publications

(6 citation statements)

References 37 publications

(47 reference statements)

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“…Recently, the localized CP violation and branching fraction of the four-body decaȳ B 0 → K − π + π + π − were calculated by employing a quasi-two-body QCDF approach in refs. [73,74]. Similar to the handling of three-body B meson decays in the PQCD approach, four-body processes are assumed to proceed dominantly with two intermediate resonances, which then strongly decay into two light meson pairs.…”

Section: Jhep05(2021)082mentioning

confidence: 99%

Four-body decays B(s) → (Kπ)S/P(Kπ)S/P in the perturbative QCD approach

Rui

2021

J. High Energ. Phys.

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We investigate the four-body decays B(s) → (Kπ)S/P(Kπ)S/P in the Kπ-pair invariant mass region around the K*(892) resonance in the perturbative QCD (PQCD) approach, where (Kπ)S/P denotes a S- or P-wave Kπ configuration. The contributions from the P-wave resonance K*(892) and from possible S-wave components are included into the parametrization of the Kπ two-meson distribution amplitudes, which are the non-perturbative inputs in this formalism. We calculate the branching ratio for each resonance and observe sizable S-wave contributions to the Bs modes, well consistent with recently available LHCb data. We also deduce the polarization fractions for the $$ {K}^{\ast }{\overline{K}}^{\ast } $$ K ∗ K ¯ ∗ final states, and compare our predictions to those in previous PQCD analyses of the corresponding two-body B → $$ {K}^{\ast }{\overline{K}}^{\ast } $$ K ∗ K ¯ ∗ decays. The polarization puzzle associated with the two U-spin related channels B0 → $$ {K}^{\ast 0}{\overline{K}}^{\ast 0} $$ K ∗ 0 K ¯ ∗ 0 and $$ {B}_s^0\to {K}^{\ast 0}{\overline{K}}^{\ast 0} $$ B s 0 → K ∗ 0 K ¯ ∗ 0 still exists. In addition to direct CP asymmetries, triple-product asymmetries and S-wave induced direct CP asymmetries originating from the interference among various helicity amplitudes, are presented. It is shown that true triple-product asymmetries are rather small, while direct CP asymmetries and S-wave-induced direct CP asymmetries are significant in some decays. Our results will be subject to stringent tests with precise data from B factories in the near future.

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Section: Jhep05(2021)082mentioning

confidence: 99%

Four-body decays B(s) → (Kπ)S/P(Kπ)S/P in the perturbative QCD approach

Rui

2021

J. High Energ. Phys.

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“…Generally, it is not easy to calculate dynamics of these decays, however, it can be simplified by employing the factorization theorems. Several factorization approaches, such as QCD factorizations (QCDF) [19][20][21][22][23][24][25][26][27], the soft collinear effective theory (SECT) [28][29][30], factorizationassisted topological amplitude approach (FAT) [31] and the perturbative QCD (PQCD) factorization approachs [32][33][34][35][36][37][38][39][40][41][42][43] are used to investigate these decays. Compared with other approaches, the perturbative QCD factorization which based on K T factorization theorem is more appropriate to find out the four-body decays of B meson [44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Study of the four-body decays $B^{0}_{S} \rightarrow ππππ$ in the perturbative QCD approach

Liang,

2022

Preprint

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In this work, we analyse the CP-averaged branching ratios and direct CP-violating asymmetries of the fourbody decays B 0 S → ππππ decay from the S-wave resonances, f0(980) and f0(500) and P-wave resonances, ρ(770) by introducing the S-wave and P-wave ππ distribution amplitudes within the framework of the perturbative QCD approach. We also calculate branching ratios of the two-body decays B 0 S → ρ 0 ρ 0 , B 0 S → ρ + ρ − from the corresponding quasi-two-body decays models and compare our our results with those obtained in previous perturbative QCD approach, QCD factorization approach and FAT approach, it is found that the predictions are consistent with present dates within errors. The branching ratios of our calculations for the four-body decays B 0 S → ππππ are at the order of the 10 −8 . For the CP-violating asymmetries, we found that CP-violating asymmetry can be enhanced largely by the ρ − ω mixing resonances when ππ pairs masses are in the vicinity of ω resonance.

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“…Recently, the localized CP violation and branching fraction of the four-body decay B0 → K − π + π + π − have been calculated by employing a quasi-two-body QCDF approach in Refs. [74,75]. In our previous works [76][77][78], the PQCD factorization formalism based on the quasi-two-bodydecay mechanism for four-body B meson decays have been well established.…”

Section: Introductionmentioning

confidence: 99%

Study of $B_{(s)}^0 \to ϕϕ\to (K^+K^-)(K^+K^-)$ decays in the perturbative QCD approach

Yan,

Rui,

Xiao

et al. 2022

Preprint

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In this work, we make a detailed analysis on the penguin-dominant processes B 0 (s) → φφ → (K + K − )(K + K − ) in the perturbative QCD (PQCD) approach. In addition to the dominant P -wave resonance, the scalar background f0(980) → K + K − is also accounted for. We improve the Gegenbauer moments in KK two-meson distribution amplitudes by fitting the PQCD factorization formulas to measured branching ratios of three-body and four-body B decays. We extract the branching ratios of two-body B 0 (s) → φφ decays from the corresponding four-body decay modes and calculate the relevant polarization fractions together with two relative phases φ ,⊥ , which are consistent with the previous theoretical predictions. The PQCD predictions for the "true" triple product asymmetries (TPAs) are zero which are expected in the standard model due to the vanishing weak phase difference, and support the current data reported by the CDF and LHCb Collaborations. A large "fake" TPA A 1 T-fake = 30.4% of the decay B 0 s → φφ → (K + K − )(K + K − ) is predicted for the first time, which indicates the presence of the significant final-state interactions. The TPAs of the rare decay channel B 0 → φφ → (K + K − )(K + K − ) are also predicted and can be tested in the near future.

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Studying the localized CP violation and the branching fraction of the decay *

Abstract: In this work, we study the localized violation and the branching fraction of the four-body decay by employing a quasi-two-body QCD factorization approach. Considering the interference of and channels, we predict … Show more

Cited by 9 publications

References 37 publications

Four-body decays B(s) → (Kπ)S/P(Kπ)S/P in the perturbative QCD approach

Four-body decays B(s) → (Kπ)S/P(Kπ)S/P in the perturbative QCD approach

Study of the four-body decays $B^{0}_{S} \rightarrow ππππ$ in the perturbative QCD approach

Study of $B_{(s)}^0 \to ϕϕ\to (K^+K^-)(K^+K^-)$ decays in the perturbative QCD approach

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