Production amplitude for a single scalar resonance

2008 ◽  
Author(s):  
D. R. Boito ◽  
M. R. Robilotta ◽  
George Rupp ◽  
Eef van Beveren ◽  
Pedro Bicudo ◽  
...  
Keyword(s):  
Production Amplitude ◽  
Scalar Resonance

Production of Scalar $K\bar{K}$ Molecules in ϕ Radiative Decays

1997 ◽  
Vol 12 (28) ◽  
pp. 5019-5037 ◽  
Author(s):  
N. N. Achasov ◽  
V. V. Gubin ◽  
V. I. Shevchenko
Keyword(s):  
Imaginary Part ◽  
Mass Spectra ◽  
Mass Region ◽  
Resonance Width ◽  
Radiative Decays ◽  
Meson Mass ◽  
Resonance Production ◽  
Production Amplitude ◽  
Narrow Resonance ◽  
Scalar Resonance

The potentialities of the production of the scalar [Formula: see text] molecules in the ϕ radiative decays are considered beyond the narrow resonance width approximation. It is shown that BR (ϕ → γ f0(a0) → γππ(πη)) ≈ (1 ÷ 2) × 10-5, [Formula: see text] and BR (ϕ → γ (f0 + a0) → γ KSKS) < 5 · 10-8. The mass spectra in the ππ, πη, K+K- channels are calculated. The imaginary part of the amplitude ϕ → γ f0(a0) is calculated analytically. It is obtained by the phase of the scalar resonance production amplitude that causes the interference patterns in the reaction e+e- → γπ+π- in the ϕ meson mass region.

scholarly journals Zeros of the Vector - Meson Production Amplitude and Their Implications

1973 ◽  
Vol 30 (10) ◽  
pp. 465-468 ◽  
Author(s):  
L. J. Gutay ◽  
R. L. McIlwain ◽  
K. V. Vasavada ◽  
F. T. Meiere
Keyword(s):  
Vector Meson ◽  
Meson Production ◽  
Production Amplitude ◽  
Vector Meson Production

QCD sum rule treatment of the lightest I=0 scalar resonance

1998 ◽  
Author(s):  
V. Elias ◽  
A. H. Fariborz ◽  
Fang Shi ◽  
T. G. Steele
Keyword(s):  
Sum Rule ◽  
Scalar Resonance

scholarly journals Proton-antiproton annihilation into ηηπ-observation of a scalar resonance decaying into ηη

1992 ◽  
Vol 291 (3) ◽  
pp. 347-354 ◽  
Author(s):  
C. Amsler ◽  
I. Augustin ◽  
C.A. Baker ◽  
B.M. Barnett ◽  
C.J. Batty ◽  
...  
Keyword(s):  
Antiproton Annihilation ◽  
Proton Antiproton ◽  
Scalar Resonance

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.

Reggeon calculus for the production amplitude. II

1975 ◽  
Vol 11 (10) ◽  
pp. 2989-3007 ◽  
Author(s):  
Jochen Bartels
Keyword(s):  
Production Amplitude

scholarly journals Zeros of the vector meson production amplitude and their implications

1972 ◽  
Author(s):  
L.J. Gutay ◽  
R.L. McIlwain ◽  
K.V. Vasavada ◽  
F.T. Meiere
Keyword(s):  
Vector Meson ◽  
Meson Production ◽  
Production Amplitude ◽  
Vector Meson Production

Diffractive hadron production at ultrahigh energies

2015 ◽  
Vol 30 (11) ◽  
pp. 1550054 ◽  
Author(s):  
V. V. Anisovich ◽  
M. A. Matveev ◽  
V. A. Nikonov
Keyword(s):  
Energy Region ◽  
Hadron Production ◽  
Ultrahigh Energy ◽  
Production Amplitude ◽  
Initial State ◽  
Final State ◽  
Black Disk ◽  
Diffractive Production ◽  
Three Body ◽  
K Matrix

Diffractive production is considered in the ultrahigh energy region where pomeron exchange amplitudes are transformed into black disk ones due to rescattering corrections. The corresponding corrections in hadron reactions h1 + h3 → h1 + h2 + h3 with small momenta transferred [Formula: see text] are calculated in terms of the K-matrix technique modified for ultrahigh energies. Small values of the momenta transferred are crucial for introducing equations for amplitudes. The three-body equation for hadron diffractive production reaction h1 + h3 → h1 + h2 + h3 is written and solved precisely in the eikonal approach. In the black disk regime final state scattering processes do not change the shapes of amplitudes principally but dump amplitudes by a factor ~ ¼; initial state rescatterings result in additional factor ~ ½. In the resonant disk regime initial and final state scatterings damp strongly the production amplitude that corresponds to σ inel /σ tot → 0 at [Formula: see text] in this mode.

Sign in / Sign up

Export Citation Format

Share Document