B0 → J/ψf2(1270) decay in QCD factorization

2012 ◽  
Vol 90 (12) ◽  
pp. 1201-1208 ◽  
Author(s):  
Mahboobeh Sayahi ◽  
Hossein Mahraban
Keyword(s):  
Experimental Data ◽  
B Meson ◽  
Factorization Method ◽  
Branching Ratios ◽  
Hadronic Decay ◽  
Light Meson ◽  
Qcd Factorization ◽  
Effective Coefficients

In this paper, the hadronic decay B0 → J/ψf2(1270) has been analyzed using the “QCD factorization” method. The effective coefficients [Formula: see text] have been calculated for three helicity states (h = 0, +, –) which give three contributions of amplitude. We have assumed two scenarios for J/ψ. First, we have considered that J/ψ behaves as a light meson compared to the B meson and second, we have considered the mass of J/ψ in our calculations meaning that mJ/ψ/mb is held fixed. The branching ratios are calculated in these two scenarios and also in different energy scales (μ = mb, μ = mb/2, and μ = 2mb). The obtained results are in agreement with available experimental data for the second scenario and μ = 2mb.

B→J/ψρ DECAY WITHIN QCD FACTORIZATION APPROACH

2011 ◽  
Vol 26 (40) ◽  
pp. 3041-3054 ◽  
Author(s):  
MAHBOOBEH SAYAHI ◽  
HOSSEIN MEHRABAN
Keyword(s):  
Experimental Data ◽  
B Meson ◽  
Factorization Method ◽  
Branching Ratios ◽  
Light Meson ◽  
Hadronic Decays ◽  
Factorization Approach ◽  
Qcd Factorization ◽  
Effective Coefficients

In this paper, the hadronic decays B+→J/ψρ+ and B0→J/ψρ0 have been analyzed in "QCD factorization" method. The effective coefficients [Formula: see text] have been calculated for three helicity states (h = 0, +, -) which given three contributions of amplitude. We have assumed two scenarios for J/ψ. First, we have considered that J/ψ behaves as a light meson in comparison with B-meson and in other scenario, we have considered mass of J/ψ in our calculations. The branching ratios are calculated in these conditions and also in different energy scales. The obtained results are in agreement with available experimental data at second scenario and μ = mb/2.

scholarly journals Study of theψ(1S,2S)andηc(1S,2S)Weak Decays intoDM

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Junfeng Sun ◽  
Yueling Yang ◽  
Jinshu Huang ◽  
Lili Chen ◽  
Qin Chang
Keyword(s):  
Branching Ratios ◽  
Light Meson ◽  
Heavy Flavor ◽  
Final States ◽  
Charmed Meson ◽  
Matrix Elements ◽  
High Luminosity ◽  
Factorization Approach ◽  
Weak Decays ◽  
Qcd Factorization

Inspired by the recent measurements on theJ/ψ(1S)→Dsρ,DuK⁎weak decays at BESIII and the potential prospects of charmonium at high-luminosity heavy-flavor experiments, we studyψ(1S,2S)andηc(1S,2S)weak decays into final states including one charmed meson plus one light meson, considering QCD corrections to hadronic matrix elements with QCD factorization approach. It is found that the Cabibbo-favoredψ(1S,2S)→Ds-ρ+,Ds-π+,D¯u0K¯⁎0decays have large branching ratios≳10-10, which might be accessible at future experiments.

$B^0 \rightarrow {\bar D}^0 f_2(1270)$ DECAY IN QCD FACTORIZATION

2013 ◽  
Vol 28 (01) ◽  
pp. 1350002
Author(s):  
MAHBOOBEH SAYAHI ◽  
HOSSEIN MEHRABAN
Keyword(s):  
Experimental Data ◽  
Large Scale ◽  
D Meson ◽  
Charm Quark ◽  
Branching Ratio ◽  
Form Factors ◽  
Hadronic Decay ◽  
Qcd Factorization ◽  
The Matrix ◽  
B Quark

In this paper, the hadronic decay [Formula: see text] has been analyzed in naive and QCD factorization methods. The simplest approach to obtain the amplitude of the hadronic B decays is naive factorization, where the matrix elements have been parametrized into products of decay constant and form factors. We have calculated the factorizable amplitudes and nonfactorizable contributions corresponding to the vertex corrections and the hard spectator interactions in QCD factorization. We treat the charm quark as light, compared to the large scale provided by the mass of the decaying b quark (mc ≪mb and mc fixed as mb→∞). Our obtained branching ratio of [Formula: see text] is (1.36±0.02)×10-5 using naive factorization, which is smaller than the experimental data: (1.2±0.4)×10-4. On the other hand, by considering QCD corrections in QCDF and by treating D-meson as a light, we have obtained the value (2.57±0.01)×10-5, which has been used to decrease the discrepancy between the theoretical and experimental data.

scholarly journals ANGULAR DISTRIBUTION ANALYSIS OF B → J/ψ K* AND RESOLVING DISCRETE AMBIGUITIES IN THE DETERMINATION OF ϕ1

2003 ◽  
Vol 18 (08) ◽  
pp. 1437-1442 ◽  
Author(s):  
H.-Y. CHENG ◽  
Y.-Y. KEUM ◽  
K.-C. YANG
Keyword(s):  
Angular Distribution ◽  
B Meson ◽  
Factorization Method ◽  
Distribution Analysis ◽  
B Meson Decays ◽  
Factorization Approach ◽  
Qcd Factorization ◽  
The Status ◽  
Unitary Triangle

We discuss the angular distribution analysis of B → J/ψ K* decays and a way to resolve discrete ambiguites in the determination of the unitary triangle ϕ1(=β). We study the status of factorization hypothesis in the color-suppressed B meson decays: B → J/ψ K(*) within the general factorization approach and QCD-factorization method.

scholarly journals ANALYSIS OF THE $B \to K^*_2(1430), a_2(1320), f_2(1270)$ FORM-FACTORS WITH LIGHT-CONE QCD SUM RULES

2011 ◽  
Vol 26 (37) ◽  
pp. 2761-2782 ◽  
Author(s):  
ZHI-GANG WANG
Keyword(s):  
Experimental Data ◽  
Light Cone ◽  
B Meson ◽  
Sum Rules ◽  
Form Factors ◽  
Distribution Amplitude ◽  
Qcd Sum Rules ◽  
Line Shapes ◽  
The Future

In this paper, we study the [Formula: see text] form-factors with the light-cone QCD sum rules, where the B-meson light-cone distribution amplitudes are used. In calculations, we observe that the line-shapes of the B-meson light-cone distribution amplitude ϕ+(ω) have significant impacts on the values of the form-factors, and expect to obtain severe constraints on the parameters of the B-meson light-cone distribution amplitudes from the experimental data in the future.

scholarly journals FINAL STATE INTERACTIONS IN B → ππK AND $B\to K\overline{K}K$ DECAYS

2007 ◽  
Vol 22 (02n03) ◽  
pp. 645-648
Author(s):  
L. LEŚNIAK ◽  
R. KAMIŃSKI ◽  
B. EL-BENNICH ◽  
B. LOISEAU ◽  
A. FURMAN
Keyword(s):  
Experimental Data ◽  
Theoretical Model ◽  
Unitary Representation ◽  
B Meson ◽  
Final State ◽  
B Meson Decays ◽  
Meson Decays ◽  
Neutral B Meson ◽  
Final State Interactions

Analysis of charged and neutral B meson decays into π+π-K, K+K-K and [Formula: see text] is performed using a unitary representation of the ππ and [Formula: see text] final state interactions. Comparison of the theoretical model with the experimental data of the Belle and BaBar Collaborations indicates that charming penguin contributions are necessary to describe the B → f0(980) K and B → ρ(770)0 K decays.

scholarly journals THE B→Xsl+l- AND B→Xsγ DECAYS WITH THE FOURTH GENERATION

1999 ◽  
Vol 14 (35) ◽  
pp. 2453-2462 ◽  
Author(s):  
CHAO-SHANG HUANG ◽  
WU-JUN HUO ◽  
YUE-LIANG WU
Keyword(s):  
B Meson ◽  
Branching Ratio ◽  
Branching Ratios ◽  
Fourth Generation ◽  
B Meson Decays ◽  
Meson Decays

If the fourth generation fermions exist, the new quarks could influence the branching ratios of the decays of B→Xsγ and B→Xsl+l-. We obtain two solutions of the fourth generation CKM factor [Formula: see text] from the decay of B→ Xsγ. We use these two solutions to calculate the new contributions of the fourth generation quark to Wilson coefficients of the decay of B→ Xsl+l-. The branching ratio and the forward–backward asymmetry of the decay of B→ Xsl+l- in the two cases are calculated. Our results are quite different from that of SM in one case, almost the same in another case. If Nature chooses the former, the B meson decays could provide a possible test of the fourth generation existence.

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 ψ(3770) and B meson exclusive decay B → ψ(3770)K in QCD factorization

2006 ◽  
Vol 28 (3) ◽  
pp. 361-367 ◽  
Author(s):  
Ying-Jia Gao ◽  
Ce Meng ◽  
Kuang-Ta Chao
Keyword(s):  
B Meson ◽  
Qcd Factorization ◽  
Exclusive Decay

scholarly journals Branching Fractions andCPAsymmetries ofB→K0*1430ρωandB→K0*1430ϕDecays in the Family NonuniversalZ′Model

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Ying Li ◽  
En-Lei Wang ◽  
Hong-Yan Zhang
Keyword(s):  
Experimental Data ◽  
Standard Model ◽  
Branching Fractions ◽  
Qcd Factorization ◽  
The Family ◽  
The Standard Model

Within the QCD factorization framework, we investigate the branching fractions and the directCPasymmetries of decaysB→K0*1430ρωandB→K0*1430ϕunder two different scenarios in the standard model and the family nonuniversalZ′model. We find that the annihilation terms play crucial roles in these decays and lead to the major uncertainties. For decaysB-→K0*-1430ρ0ω, the newZ′boson could change the branching fractions remarkably. However, for other decays, its contribution might be clouded by large uncertainties from annihilations. Unfortunately, neither the standard model nor theZ′model can reproduce all experimental data simultaneously under one certain scenario. We also noted that the directCPasymmetries ofB-→K0*-1430ρ0ωcould be used to identify theK0*1430meson and search for the contribution of newZ′boson.

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