scholarly journals EVIDENCE FOR REGGE POLES AND HADRON COLLISION PHENOMENA AT HIGH ENERGIES.

1972 ◽  
Author(s):  
C. B. Chiu
Keyword(s):  
Hadron Collision ◽  
High Energies ◽  
Regge Poles

scholarly journals What is duality?

1970 ◽  
Vol 318 (1534) ◽  
pp. 257-278 ◽  
Keyword(s):  
Sum Rules ◽  
Scattering Amplitude ◽  
Finite Energy ◽  
High Energy ◽  
Low Energy ◽  
Strong Interactions ◽  
High Energies ◽  
Resonance Formation ◽  
Interference Models ◽  
Regge Poles

Duality gives a satisfying connexion between two different areas of strong interaction physics, Regge poles at high energy and resonances at low energy. This interlocking gives powerful bootstrap conditions, and together with the assumption that certain channels do not contain resonances it gives strong restrictions on the hadron spectrum. Since there is some confusion about the term duality, we shall explain what is meant by the various forms of duality (f. e. s. r. (finite energy sum rules) duality, local duality), and what is meant by ‘building up’, and we shall show in what way antidual models (such as the generalized interference model) come into conflict with basic empirical facts. Duality expresses the relation between two descriptions of the hadronic scattering amplitude. At low energy (l. e.) the description by direct-channel resonances is simple and useful (see figure 1). At low energy the data show prominent peaks as a function of energy, and one may try the approximation of resonance saturation, i. e. of neglecting the non-resonating background. The second description is the exchange of Regge poles, and it is useful at high energies (h.e.), where typical features are forward peaks, energy dependence s α , and structure at fixed t (see figure 2). The two descriptions are very different; resonance formation corresponds to poles in the s channel, Regge exchange to poles in the t channel. Duality says that there are direct relations between these two descriptions, that they are equivalent in a certain sense. In complete contrast, the interference models postulate that one must add the two descriptions. (If lowest order perturbation theory was relevant to strong interactions, one would be led to adding the diagrams.)

Regge poles and elastic scattering at high energies

1962 ◽  
Vol 26 (6) ◽  
pp. 1301-1308 ◽  
Author(s):  
G. Domokos
Keyword(s):  
Elastic Scattering ◽  
High Energies ◽  
Regge Poles

1/Nc EXPANSION, QUARK MODEL AND HADRON COLLISIONS AT HIGH ENERGIES

1986 ◽  
Vol 01 (02) ◽  
pp. 463-480 ◽  
Author(s):  
V.V. ANISOVICH ◽  
M.N. KOBRINSKY ◽  
V.A. NIKONOV ◽  
J. NYÍRI
Keyword(s):  
Quark Model ◽  
Formation Mechanism ◽  
Cross Sections ◽  
Hadron Production ◽  
Hadron Collision ◽  
High Energies ◽  
Production Processes ◽  
Collision Processes ◽  
Colour Screening

Soft hadron-collision processes at high energies are considered, under the assumption that gluon interactions are short-ranged and that the rules of the 1/Nc expansion are fulfilled. It is shown, that these considerations lead to the scheme of the additive quark model with some relatively large additional effects of colour screening. This colour screening is responsible for the unnatural breaking of the Levin-Frankfurt condition1 and also for the effective increase of cross sections for hadron-nucleus interactions2 if quark bags in nuclei exist, The formation mechanism of fragmentational particles is considered in multiple hadron-production processes.

scholarly journals Regge Poles and Inelastic Scattering at High Energies

1963 ◽  
Vol 129 (2) ◽  
pp. 974-981 ◽  
Author(s):  
A. P. Contogouris ◽  
S. C. Frautschi ◽  
How-sen Wong
Keyword(s):  
Inelastic Scattering ◽  
High Energies ◽  
Regge Poles

Valence electron spectroscopy of inhomogeneous media

1992 ◽  
Vol 50 (2) ◽  
pp. 1150-1151
Author(s):  
A. Howie ◽  
D.W. McComb
Keyword(s):  
Specific Gravity ◽  
Loss Function ◽  
Electron Spectroscopy ◽  
Valence Electron ◽  
Peak Height ◽  
Loss Functions ◽  
Loss Peak ◽  
High Energies ◽  
Valence Electron Density ◽  
Electron Microscopist

The bulk loss function Im(-l/ε (ω)), a well established tool for the interpretation of valence loss spectra, is being progressively adapted to the wide variety of inhomogeneous samples of interest to the electron microscopist. Proportionality between n, the local valence electron density, and ε-1 (Sellmeyer's equation) has sometimes been assumed but may not be valid even in homogeneous samples. Figs. 1 and 2 show the experimentally measured bulk loss functions for three pure silicates of different specific gravity ρ - quartz (ρ = 2.66), coesite (ρ = 2.93) and a zeolite (ρ = 1.79). Clearly, despite the substantial differences in density, the shift of the prominent loss peak is very small and far less than that predicted by scaling e for quartz with Sellmeyer's equation or even the somewhat smaller shift given by the Clausius-Mossotti (CM) relation which assumes proportionality between n (or ρ in this case) and (ε - 1)/(ε + 2). Both theories overestimate the rise in the peak height for coesite and underestimate the increase at high energies.

Photon interactions at high energies

2001 ◽  
Vol 16 (1-2) ◽  
pp. 49-85
Author(s):  
A. De Roeck
Keyword(s):  
High Energies ◽  
Photon Interactions

The importance of inelastic processes at high energies and the theory of fireballs

1970 ◽  
Vol 101 (7) ◽  
pp. 385-428 ◽  
Author(s):  
Igor M. Dremin ◽  
Il'ya I. Roizen ◽  
Dmitrii S. Chernavskii
Keyword(s):  
High Energies ◽  
Inelastic Processes
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