Study of the non-resonant contribution in three-body hadronic decays of the D meson

1999 ◽  
Author(s):  
Carla Gobel Burlamaqui de Mello
Keyword(s):  
D Meson ◽  
Hadronic Decays ◽  
Three Body ◽  
Resonant Contribution

scholarly journals RESONANCES AND WEAK INTERACTIONS IN D+→ π+π−π+ DECAYS

2007 ◽  
Vol 16 (09) ◽  
pp. 2876-2879 ◽  
Author(s):  
DIOGO R. BOITO ◽  
BRUNO EL-BENNICH ◽  
BENOÎT LOISEAU ◽  
OLIVIER LEITNER
Keyword(s):  
Weak Interactions ◽  
Decay Amplitude ◽  
D Meson ◽  
Final State ◽  
Meson Decays ◽  
Factorization Approximation ◽  
Weak Part ◽  
Unitary Model ◽  
Final State Interactions ◽  
Three Body

We describe the ππS-wave in D+→ π+π−π+ decays using a unitary model for the ππ Final State Interactions (FSI). The three body decay is treated as a quasi two-body process where, at the weak vertex, the D meson decays into a resonance and a pion. The weak part of the decay amplitude is evaluated using the effective weak Hamiltonian within the factorization approximation.

Analysis of four-body decay of D meson

2017 ◽  
Vol 32 (02n03) ◽  
pp. 1750011
Author(s):  
T. Estabar ◽  
H. Mehraban
Keyword(s):  
D Meson ◽  
Experimental Information ◽  
Factorization Approach ◽  
Decay Modes ◽  
Qcd Factorization ◽  
Pion Interaction ◽  
Scalar Resonance ◽  
Experimental Values ◽  
Three Body ◽  
Computation Analysis

The aim of this work is to provide a phenomenological analysis of the contribution of [Formula: see text] meson to [Formula: see text], [Formula: see text] and [Formula: see text] quasi-three-body decays. Such that the analysis of mentioned four-body decays is summarized into three-body decay and several channels are observed. Based on the factorization approach, hadronic three-body decays receive both resonant and nonresonant contributions. We compute both contributions of three-body decays. As, there are tree, penguin, emission, and emission annihilation diagrams for these decay modes. Our theoretical model for [Formula: see text] decay is based on the QCD factorization to quasi-two body followed by [Formula: see text]-wave. This model for this decay following experimental information which demonstrated two pion interaction in the [Formula: see text]-wave is introduced by the scalar resonance. The theoretical values are [Formula: see text], [Formula: see text] and [Formula: see text], while the experimental results of them are [Formula: see text], [Formula: see text] and [Formula: see text], respectively. Comparing computation analysis values with experimental values show that our results are in agreement with them.

scholarly journals Radiative three-body D-meson decays in and beyond the standard model

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Nico Adolph ◽  
Joachim Brod ◽  
Gudrun Hiller
Keyword(s):  
Standard Model ◽  
D Meson ◽  
New Physics ◽  
Beyond The Standard Model ◽  
Charm Decays ◽  
Qcd Factorization ◽  
Heavy Hadron ◽  
The Standard Model ◽  
Cabibbo Suppressed ◽  
Three Body

AbstractWe study radiative charm decays $$D \rightarrow P_1 P_2 \gamma $$ D → P 1 P 2 γ , $$P_{1,2}=\pi ,K$$ P 1 , 2 = π , K in QCD factorization at leading order and within heavy hadron chiral perturbation theory. Branching ratios including resonance contributions are around $$\sim 10^{-3}$$ ∼ 10 - 3 for the Cabibbo-favored modes into $$K \pi \gamma $$ K π γ and $$\sim 10^{-5}$$ ∼ 10 - 5 for the singly Cabibbo-suppressed modes into $$\pi ^+ \pi ^- \gamma , K^+ K^- \gamma $$ π + π - γ , K + K - γ , and thus in reach of the flavor factories BES III and Belle II. Dalitz plots and forward–backward asymmetries reveal significant differences between the two QCD frameworks; such observables are therefore ideally suited for a data-driven identification of relevant decay mechanisms in the standard-model dominated $$D \rightarrow K \pi \gamma $$ D → K π γ decays. This increases the potential to probe new physics with the $$D \rightarrow \pi ^+ \pi ^- \gamma $$ D → π + π - γ and $$D \rightarrow K^+ K^- \gamma $$ D → K + K - γ decays, which are sensitive to enhanced dipole operators. CP asymmetries are useful to test the SM and look for new physics in neutral $$|\Delta C|=1$$ | Δ C | = 1 transitions. Cuts in the Dalitz plot enhance the sensitivity to new physics due to the presence of both s- and t, u-channel intermediate resonances.

Quasi Three-Body Decay of D Meson

2018 ◽  
Vol 69 (4) ◽  
pp. 407
Author(s):  
T. Estabar ◽  
H. Mehraban
Keyword(s):  
D Meson ◽  
Three Body

scholarly journals EXTRACTING β AND THE NEW DSJ RESONANCES

2004 ◽  
Vol 19 (31) ◽  
pp. 5501-5511 ◽  
Author(s):  
ALAKABHA DATTA
Keyword(s):  
New Physics ◽  
P Wave ◽  
Wave States ◽  
Three Body ◽  
Resonant Contribution

The three body decays [Formula: see text], may be used to measure both sin 2β and cos 2β. Crucial to the cos 2β measurement is the resonant contribution to the three body decay from p-wave excited Ds, states. If these p-wave states are the newly discovered Ds(2317) and Ds(2460) then they are below the D(*)K threshold and hence do not contribute to [Formula: see text]. The three body decays can then be used to measure sin 2β without resonant dilution and to look for new physics in [Formula: see text] transition.

scholarly journals The annihilation diagram in three-body D-meson decay

1981 ◽  
Vol 99 (5) ◽  
pp. 433-436 ◽  
Author(s):  
John F. Donoghue ◽  
Barry R. Holstein
Keyword(s):  
D Meson ◽  
Meson Decay ◽  
Three Body

scholarly journals ψ(2S)two- and three-body hadronic decays

2003 ◽  
Vol 67 (5) ◽  
Author(s):  
J. Z. Bai ◽  
Y. Ban ◽  
J. G. Bian ◽  
I. Blum ◽  
X. Cai ◽  
...  
Keyword(s):  
Hadronic Decays ◽  
Three Body
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