Branching ratio and CP violation in Bs0 → K∗0K̄∗0 decay in the framework of QCD factorization

2020 ◽  
Vol 35 (24) ◽  
pp. 2050201 ◽  
Author(s):  
E. H. Raslan ◽  
H. R. Khan
Keyword(s):  
Cp Violation ◽  
Quantum Chromodynamics ◽  
Branching Ratio ◽  
Meson Decay ◽  
Experimental Measurements ◽  
Full Agreement ◽  
Factorization Approach ◽  
Qcd Factorization ◽  
Theoretical Predictions ◽  
Charge Parity

We present an analytic calculation of Branching Ratio (BR) and Charge-Parity (CP) violating asymmetries of the [Formula: see text] meson decay into the two light vectors [Formula: see text] by calculating the helicity amplitude in the framework of quantum chromodynamics (QCD) factorization approach. We find the BR of [Formula: see text] which is in full agreement with the recent theoretical predictions and experimental measurements. We also calculate the direct CP violation, CP violation in mixing and CP violation due to interference which are [Formula: see text], [Formula: see text], and [Formula: see text], respectively.

scholarly journals Branching Ratio and CP Violation in B s 0 ¯ → ϕϕ Decay in the Framework of QCD Factorization

Atoms ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 22 ◽  
Author(s):  
E. H. Raslan ◽  
H. R. Khan
Keyword(s):  
Cp Violation ◽  
Helicity Amplitude ◽  
Branching Ratio ◽  
Analytic Calculation ◽  
Meson Decay ◽  
Experimental Measurements ◽  
Factorization Approach ◽  
Qcd Factorization ◽  
Theoretical Predictions ◽  
Charge Parity

We present an analytic calculation of Branching Ratio (BR) and Charge-Parity (CP) violating asymmetries of the B s 0 ¯ meson decay into the two light vectors ϕ ϕ . In doing this we calculate the helicity amplitude of the present decay in the framework of QCD factorization approach. We find the BR of B s 0 ¯ → ϕ ϕ = ( 1.56 ± 0.23 ) × 10 − 5 . We also calculate the direct CP violation, CP violation in mixing and CP violation due to interference which are A C P dir = 0.00355 ± 0.00152 , A C P mix = − 0.00629 ± 0.03119 and A C P Δ Γ = 0.99997 ± 0.00019 , respectively. Our results are in agreement with the recent theoretical predictions and experimental measurements.

Analytic Calculations of the Branching Ratio and CP Violation in Bs0 → Ds+Ds− Decay

2020 ◽  
Vol 35 (15) ◽  
pp. 2050122
Author(s):  
H. R. Khan ◽  
E. H. Raslan ◽  
R. A. Reem
Keyword(s):  
Cp Violation ◽  
Decay Width ◽  
Branching Ratio ◽  
Gluon Condensate ◽  
Analytic Calculation ◽  
Experimental Measurements ◽  
Meson Decays ◽  
First Order ◽  
Theoretical Predictions ◽  
Charge Parity

We present an analytic calculation of Branching Ratio (BR) and Charge-Parity (CP) violating asymmetries of the [Formula: see text] meson decays to [Formula: see text] by calculating the amplitude and the decay width of the process including the chiral loop and gluon condensate to first-order. We find the BR of [Formula: see text] which is in agreement with other experimental measurements and theoretical predictions. We also calculate the direct CP violation, CP violation in mixing and CP violation due to interference which are [Formula: see text], [Formula: see text] and [Formula: see text], respectively.

Study of the branching ratios and CP asymmetries in Bs0¯ → K∗0ρ0(ω) decays within QCD factorization

2020 ◽  
Vol 35 (26) ◽  
pp. 2050163
Author(s):  
E. H. Raslan ◽  
H. R. Khan
Keyword(s):  
Reference Values ◽  
Branching Ratio ◽  
Branching Ratios ◽  
Decay Modes ◽  
Qcd Factorization ◽  
Theoretical Predictions ◽  
Charge Parity ◽  
Cp Asymmetries

We study analytically the branching ratio (BR) and charge parity (CP[Formula: see text]) asymmetries of the [Formula: see text] and [Formula: see text] decay modes within QCDF approach. We find the [Formula: see text] and [Formula: see text]. We also find the values of CP asymmetries are [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text]. The reported results are consistent with the recent theoretical predictions and can be used as a reference values in the forthcoming experiments.

Study of the branching ratio and CP asymmetries in Bs0¯ → ωϕ decay within QCD factorization

2020 ◽  
Vol 35 (38) ◽  
pp. 2050312
Author(s):  
E. H. Raslan ◽  
H. R. Khan
Keyword(s):  
Decay Mode ◽  
Reference Values ◽  
Branching Ratio ◽  
Qcd Factorization ◽  
Theoretical Predictions ◽  
Charge Parity ◽  
Cp Asymmetries

We study analytically the Branching Ratio (BR) and Charge-Parity (CP) asymmetries of the [Formula: see text] decay mode within QCDF approach. We find the [Formula: see text]. We also find the values of CP asymmetries are [Formula: see text], [Formula: see text] and [Formula: see text]. The reported results are consistent with the recent theoretical predictions and can be used as a reference values in the forthcoming experiments.

scholarly journals Study of CP violation in B−→K−π+π− and B−→K−σ(600) decays in the QCD factorization approach

2019 ◽  
Vol 99 (7) ◽  
Author(s):  
Jing-Juan Qi ◽  
Xin-Heng Guo ◽  
Zhen-Yang Wang ◽  
Zhen-Hua Zhang ◽  
Chao Wang
Keyword(s):  
Cp Violation ◽  
Factorization Approach ◽  
Qcd Factorization

scholarly journals INCLUSIVE PRODUCTION OF FOUR CHARM HADRONS AT B-FACTORIES

2006 ◽  
Vol 21 (04) ◽  
pp. 922-925
Author(s):  
Daekyoung Kang ◽  
Jungil Lee
Keyword(s):  
Scattering Amplitude ◽  
Belle Collaboration ◽  
Inclusive Production ◽  
Hard Scattering ◽  
Factorization Approach ◽  
Qcd Factorization ◽  
Nonrelativistic Qcd ◽  
Theoretical Predictions ◽  
Perturbative Corrections

Measurements by the Belle Collaboration of the exclusive J/ψ + ηc and inclusive [Formula: see text] productions in e+e- annihilation differ substantially from theoretical predictions based on the nonrelativistic QCD factorization approach. In order to test if such a discrepancy is originated from the large perturbative corrections to the hard-scattering amplitude, we study inclusive production of four charm hadrons in e+e- annihilation at B factories.

scholarly journals QCD FACTORIZATION BASED ON SIX-QUARK OPERATOR EFFECTIVE HAMILTONIAN FROM PERTURBATIVE QCD AND CHARMLESS BOTTOM MESON DECAYS B(s)→ππ, πK, KK

2010 ◽  
Vol 25 (01) ◽  
pp. 69-111 ◽  
Author(s):  
FANG SU ◽  
YUE-LIANG WU ◽  
YI-BO YANG ◽  
CI ZHUANG
Keyword(s):  
Perturbative Qcd ◽  
Branching Ratio ◽  
Quark Propagator ◽  
Bottom Meson ◽  
Effective Hamiltonian ◽  
Meson Decays ◽  
Decay Modes ◽  
Qcd Factorization ◽  
Theoretical Predictions ◽  
Quark Operator

The charmless bottom meson decays are systematically investigated based on an approximate six-quark operator effective Hamiltonian from perturbative QCD. It is shown that within this framework the naive QCD factorization method provides a simple way to evaluate the hadronic matrix elements of two-body mesonic decays. The singularities caused by on mass-shell quark propagator and gluon exchanging interaction are appropriately treated. Such a simple framework allows us to make theoretical predictions for the decay amplitudes with reasonable input parameters. The resulting theoretical predictions for all the branching ratios and CP asymmetries in the charmless B0, B+, Bs → ππ, πK, KK decays are found to be consistent with the current experimental data except for a few decay modes. The observed large branching ratio in B→π0π0 decay remains a puzzle though the predicted branching ratio may be significantly improved by considering the large vertex corrections in the effective Wilson coefficients. More precise measurements of charmless bottom meson decays, especially on CP violations in B → KK and Bs → ππ, πK, KK decay modes, will provide a useful test and guide us to a better understanding on perturbative and nonperturbative QCD.

scholarly journals Bc→BP,BVDecays with the QCD Factorization Approach

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Junfeng Sun ◽  
Na Wang ◽  
Qin Chang ◽  
Yueling Yang
Keyword(s):  
Branching Ratio ◽  
Lhcb Collaboration ◽  
Factorization Approach ◽  
Decay Channels ◽  
Qcd Factorization

We studied the nonleptonicBc→BP,BVdecays with the QCD factorization approach. It is found that the Cabibbo favored processes ofBc→Bsπ,Bsρ,BuK-are the promising decay channels with branching ratio larger than 1%, which should be observed earlier by the LHCb collaboration.

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