Branching Ratio and CP Violation in $${B}_{{s}}^{{0}}\rightarrow{\rho}^{{0}}{\phi}$$ Decay in the Framework of QCD Factorization

2020 ◽  
Vol 83 (5) ◽  
pp. 746-754
Author(s):  
E. H. Raslan ◽  
H. R. Khan
Keyword(s):  
Cp Violation ◽  
Branching Ratio ◽  
Qcd Factorization

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.

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.

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.

Resonant and non-resonant contributions of B → K∗(p1,𝜖1){Kπ,ππ,KK} decay modes

2019 ◽  
Vol 34 (06) ◽  
pp. 1950043
Author(s):  
Mahboobeh Sayahi
Keyword(s):  
Experimental Data ◽  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Branching Ratio ◽  
Heavy Meson ◽  
Chiral Perturbation ◽  
Decay Modes ◽  
Qcd Factorization ◽  
Three Body ◽  
Good Agreement

In this paper, the non-leptonic three-body decays [Formula: see text], [Formula: see text], [Formula: see text] are studied by introducing two-meson distribution amplitude for the [Formula: see text], [Formula: see text] and [Formula: see text] pairs in naive and QCD factorization (QCDF) approaches, such that the analysis is simplified into quasi-two body decays. By considering that the vector meson is being ejected in factorization, the resonant and non-resonant contributions are analyzed by using intermediate mesons in Breit–Wigner resonance formalism and the heavy meson chiral perturbation theory (HMChPT), respectively. The calculated values of the resonant and non-resonant branching ratio of [Formula: see text], [Formula: see text] and [Formula: see text] decay modes are compared with the experimental data. For [Formula: see text] and [Formula: see text], the non-resonant contributions are about 70–80% of experimental data, for which the total results by considering resonant contributions are in good agreement with the experiment.

scholarly journals CP Violation forB0→ρ0(ω)ρ0(ω)→π+π-π+π-in QCD Factorization

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Gang Lü ◽  
Jia-Qi Lei ◽  
Xin-Heng Guo
Keyword(s):  
Cp Violation ◽  
Qcd Factorization ◽  
The Masses

In the QCD factorization (QCDF) approach we study the direct CP violation inB-0→ρ0(ω)ρ0(ω)→π+π-π+π-via theρ-ωmixing mechanism. We find that the CP violation can be enhanced by doubleρ-ωmixing when the masses of theπ+π-pairs are in the vicinity of theωresonance, and the maximum CP violation can reach 28%. We also compare the results from the naive factorization and the QCD factorization.

scholarly journals EFFECT OF BOTH Z AND Z′-MEDIATED FLAVOR-CHANGING NEUTRAL CURRENTS ON Bs →τ+τ- DECAY

2012 ◽  
Vol 27 (31) ◽  
pp. 1250184 ◽  
Author(s):  
S. SAHOO ◽  
D. BANERJEE ◽  
M. KUMAR ◽  
S. MOHANTY
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
Rare Decay ◽  
Charge Asymmetry ◽  
Branching Ratio ◽  
New Physics ◽  
Neutral Currents ◽  
Flavor Changing ◽  
Potential Source ◽  
Flavor Changing Neutral Currents

In recent years, Bs →τ+τ- rare decay has attracted a lot of attention since it is very sensitive to the structure of standard model (SM) and potential source of new physics beyond SM. In this paper, we study the effect of both Z and Z′-mediated flavor-changing neutral currents on the Bs →τ+τ- decay. We find the branching ratio B(Bs→τ+τ-) is enhanced relative to SM prediction, which would help to explain the recently observed CP-violation from like-sign dimuon charge asymmetry in the B system.

Analysis of the Bs → K∓∗K± decay

2016 ◽  
Vol 31 (14n15) ◽  
pp. 1650079
Author(s):  
Amin Asadi ◽  
Hossein Mehraban
Keyword(s):  
Intermediate State ◽  
Final State Interaction ◽  
Branching Ratio ◽  
State Interaction ◽  
Experimental Result ◽  
Final State ◽  
Qcd Factorization ◽  
State Formula

In this paper, we analyzed the process of [Formula: see text] decay within QCD factorization (QCDF) and final state interaction (FSI) effects. At first, the [Formula: see text] decay is calculated via QCDF approach. The result that is found by using the QCDF method is less than the experimental result. Then we considered FSI effect as a sizable correction where there are the intermediate state [Formula: see text] mesons via the exchange of [Formula: see text]. The experi mental branching ratio of [Formula: see text] decay is [Formula: see text], and our results by QCDF and FSI are [Formula: see text] and [Formula: see text], respectively.

$K_L^0 \to 2\pi $ AND $K_L^0 \to \pi ^0 e^ + e^ - $ WITHOUT CP-VIOLATION

1990 ◽  
Vol 05 (18) ◽  
pp. 1433-1439 ◽  
Author(s):  
SEITARO NAKAMURA ◽  
NOBUYA NAKAZAWA
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
Branching Ratio ◽  
K Meson ◽  
The Standard Model ◽  
K Mesons ◽  
Meson System

Neutral K-meson system is analyzed in the framework of SU(2) (isospin: τ)×SU(2) (hypercharge spin: ζ) symmetry. Four neutral K-mesons exist and among them there is a longlived CP-even state which can decay into the 2π or the π0 e+e− state. The branching ratio of the latter mode is expected to be much larger than in the standard model.

Analysis of B0 → Ds−∗K+ decay

2015 ◽  
Vol 30 (36) ◽  
pp. 1550222
Author(s):  
Amin Asadi ◽  
Hossein Mehraban
Keyword(s):  
Vector Meson ◽  
Pseudoscalar Meson ◽  
Final State Interaction ◽  
Branching Ratio ◽  
State Interaction ◽  
Final States ◽  
Final State ◽  
Phenomenological Parameter ◽  
Qcd Factorization ◽  
Intermediate States

In this paper, we analyzed the decay [Formula: see text] within QCD factorization (QCDF) and final state interaction (FSI) methods. At first, we consider the QCDF approach, where the final states are a pseudoscalar meson and vector meson. Then, we consider the FSI method where the intermediate states are [Formula: see text] and [Formula: see text] via the exchange of [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] to improve the branching ratio. The above intermediate states are calculated by using the QCDF method. In the FSI effects, the results of our calculations depend on [Formula: see text] as the phenomenological parameter. The experimental branching ratio of this decay is [Formula: see text]. Our results in QCDF approach is [Formula: see text], and with [Formula: see text], the improved branching ratio is [Formula: see text].

Sign in / Sign up

Export Citation Format

Share Document