Off‐the‐mass shell scattering amplitude in a two‐particle potential model

1982 ◽  
Vol 50 (1) ◽  
pp. 41-45
Author(s):  
F. A. B. Coutinho
Keyword(s):  
Mass Shell ◽  
Potential Model ◽  
Scattering Amplitude ◽  
Particle Potential

A possible determination of the off-mass-shell S-wave π+π− scattering amplitude

1971 ◽  
Vol 34 (2) ◽  
pp. 152-155
Author(s):  
L.J. Gutay ◽  
J.H. Scharenguivel ◽  
R.L. McIlwain ◽  
F.T. Meiere
Keyword(s):  
Mass Shell ◽  
Scattering Amplitude ◽  
S Wave

FERMION-BOSON SCATTERING IN LADDER APPROXIMATION

1993 ◽  
Vol 08 (03) ◽  
pp. 237-243
Author(s):  
R.G. JAFAROV ◽  
S.A. HADJIEV
Keyword(s):  
Imaginary Part ◽  
Mass Shell ◽  
Scattering Amplitude ◽  
Scalar Particle ◽  
Ladder Approximation ◽  
Forward Scattering ◽  
Forward Scattering Amplitude

A method of calculating the forward scattering amplitude for fermions and scalar bosons with the exchange of scalar particle is suggested. The Bethe-Salpeter ladder equation for the imaginary part of the amplitude is constructed and a solution in Regge asymptotical form is found and the corrections to the amplitude due to the exit from mass shell are calculated.

scholarly journals Density distributions of valence nucleons under single-particle potential model

2003 ◽  
Vol 52 (4) ◽  
pp. 823
Author(s):  
Lin Cheng-Jian ◽  
Zhang Huan-Qiao ◽  
Liu Zu-Hua ◽  
Wu Yue-Wei ◽  
Yang Feng ◽  
...  
Keyword(s):  
Single Particle ◽  
Potential Model ◽  
Density Distributions ◽  
Particle Potential ◽  
Single Particle Potential

scholarly journals On the Interplay between Q2 and t Dependences in Exclusive Diffractive Production of Real Photons and Vector Mesons in ep Collisions

2012 ◽  
Vol 57 (12) ◽  
pp. 1197
Author(s):  
R. Fiore ◽  
L.L. Jenkovszky ◽  
A. Lavorini ◽  
V.K. Magas
Keyword(s):  
Mass Shell ◽  
Scattering Amplitude ◽  
Meson Production ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Photon Virtuality ◽  
Vector Meson Production ◽  
Diffractive Production ◽  
Mandelstam Analyticity ◽  
Free Parameters

We show how the familiar phenomenological way of combining the Q2 (photon virtuality) and t (squared momentum transfer) dependences of the scattering amplitude in Deeply Virtual Compton Scattering (DVCS) [1, 2] and Vector Meson Production (VMP) [2] processes can be understood in an off-mass-shell generalization of dual amplitudes with Mandelstam analyticity [3]. By comparingdifferent approaches, we managed also to constrain the numerical values of the free parameters.

scholarly journals Relativistic Friedrichs–Lee model and quark-pair creation model

2020 ◽  
Vol 80 (12) ◽  
Author(s):  
Zhi-Yong Zhou ◽  
Zhiguang Xiao
Keyword(s):  
Potential Model ◽  
Scattering Amplitude ◽  
Bound State ◽  
Pair Creation ◽  
The Other ◽  
Hadron Spectrum ◽  
Lee Model ◽  
Continuum States ◽  
Quark Potential ◽  
The Continuum

AbstractIn this paper, we present how the Friedrichs–Lee model could be extended to the relativistic scenario and be combined with the relativistic quark pair creation model in a consistent way. This scheme could be applied to study the “unquenched” effect of the meson spectra. As an example, if the lowest $$J^{PC}=0^{++}$$ J PC = 0 + + $$(u\bar{u}+d\bar{d})/\sqrt{2}$$ ( u u ¯ + d d ¯ ) / 2 bound state in the potential model is coupled to the $$\pi \pi $$ π π continuum, two resonance poles could be found from the scattering amplitude for the continuum states. One of them could correspond to the $$f_0(500)/\sigma $$ f 0 ( 500 ) / σ and the other probably $$f_0(1370)$$ f 0 ( 1370 ) . This scheme might shed more light on why extra states could appear in the hadron spectrum other than the prediction of the quark potential model.

Magnetic moments of decuplet baryons in an independent particle potential model

Pramana ◽  
1995 ◽  
Vol 44 (2) ◽  
pp. 145-152 ◽  
Author(s):  
N Barik ◽  
P Das ◽  
A R Panda
Keyword(s):  
Potential Model ◽  
Magnetic Moments ◽  
Independent Particle ◽  
Particle Potential
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