High energy inclusive processes

1971 ◽  
pp. 91-106 ◽  
Author(s):  
Chung -I Tan
Keyword(s):  
High Energy ◽  
Inclusive Processes

Eikonal approximation for high-energy inclusive processes

1975 ◽  
Vol 23 (1) ◽  
pp. 320-327
Author(s):  
B. M. Barbashov ◽  
V. V. Nesterenko
Keyword(s):  
Eikonal Approximation ◽  
High Energy ◽  
Inclusive Processes

Smallx EVOLUTION OF MULTI-POINT CORRELATORS OF WILSON LINES

2011 ◽  
Vol 04 ◽  
pp. 20-25
Author(s):  
JAMAL JALILIAN-MARIAN
Keyword(s):  
Evolution Equation ◽  
Evolution Equations ◽  
Scattering Amplitude ◽  
High Energy ◽  
Point Function ◽  
Forward Scattering Amplitude ◽  
Angular Correlations ◽  
Small X ◽  
Dipole Scattering ◽  
Inclusive Processes

At high energy (small x) n-point coorelators of Wilson lines appear in calculation of physical observables. The energy dependence of these observables is determined by the solution of the evolution equations these correlators satisfy. The most common correlator is the two-point function, the imaginary part of the forward scattering amplitude of a quark anti-quark dipole scattering on a target. This appears in structure functions in DIS as well as single inclusive hadron production in proton-nucleus collisions. Higher point correlators of Wilson lines appear in less inclusive processes, such as two-hadron angular and rapidity correlations and satisfy the Balitski-JIMWLK evolution equation. Here we derive the evolution equation satisfied by the six point correlator of Wilson lines which appears in di-hadron angular correlations in proton-nucleus collisions at high energy.

scholarly journals ANTIHYPERON POLARIZATION IN HIGH-ENERGY INCLUSIVE PROCESSES

2008 ◽  
Vol 17 (02) ◽  
pp. 371-392 ◽  
Author(s):  
C. C. BARROS ◽  
Y. HAMA
Keyword(s):  
Chiral Lagrangians ◽  
High Energy ◽  
Low Energy ◽  
High Energy Proton ◽  
Final State ◽  
Energy Proton ◽  
Final State Interactions ◽  
Inclusive Processes

We propose a model for the antihyperon polarization in high-energy proton-nucleus inclusive reactions, based on the final-state interactions between the antihyperons and other produced particles (predominantly pions). To formulate this idea, we use the previously obtained low-energy pion-(anti-)hyperon interaction using effective chiral Lagrangians, and a hydrodynamic parametrization of the background matter, which expands and decouples at a certain freezeout temperature.1.

scholarly journals Color Transparency and Hadron Formation Effects in High-Energy Reactions on Nuclei

Particles ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 24-38
Author(s):  
Alexei Larionov ◽  
Mark Strikman
Keyword(s):  
Slow Neutron ◽  
Heavy Ion ◽  
High Energy ◽  
Necessary Condition ◽  
Large Momentum ◽  
Color Transparency ◽  
Exclusive Processes ◽  
Inclusive Processes ◽  
Nuclear Targets ◽  
Hadron Formation

An incoming or outgoing hadron in a hard collision with large momentum transfer gets squeezed in the transverse direction to its momentum. In the case of nuclear targets, this leads to the reduced interaction of such hadrons with surrounding nucleons which is known as color transparency (CT). The identification of CT in exclusive processes on nuclear targets is of significant interest not only by itself but also due to the fact that CT is a necessary condition for the applicability of factorization for the description of the corresponding elementary process. In this paper we discuss the semiexclusive processes A ( e , e ′ π + ) , A ( π − , l − l + ) and A ( γ , π − p ) . Since CT is closely related to hadron formation mechanism, the reduced interaction of ’pre-hadrons’ with nucleons is a common feature of generic high-energy inclusive processes on nuclear targets, such as hadron attenuation in deep inelastic scattering (DIS). We will discuss the novel way to study hadron formation via slow neutron production induced by a hard photon interaction with a nucleus. Finally, the opportunity to study hadron formation effects in heavy-ion collisions in the NICA regime will be considered.

Models for high-energy inclusive processes and screening in deuterium

1974 ◽  
Vol 78 (2) ◽  
pp. 251-268 ◽  
Author(s):  
J. Kwieciński ◽  
L. Leśniak ◽  
K. Zalewski
Keyword(s):  
High Energy ◽  
Inclusive Processes

The E-ring: interactions with plasma and implications for its evolution

1984 ◽  
Vol 75 ◽  
pp. 599-602
Author(s):  
T.V. Johnson ◽  
G.E. Morfill ◽  
E. Grun
Keyword(s):  
Time Scale ◽  
Particle Density ◽  
High Energy ◽  
Particle Removal ◽  
Density Region ◽  
Drag Forces ◽  
Orbit Evolution ◽  
History Of ◽  
Ring Particle ◽  
Ring Material

A number of lines of evidence suggest that the particles making up the E-ring are small, on the order of a few microns or less in size (Terrile and Tokunaga, 1980, BAAS; Pang et al., 1982 Saturn meeting; Tucson, AZ). This suggests that a variety of electromagnetic and plasma affects may be important in considering the history of such particles. We have shown (Morfill et al., 1982, J. Geophys. Res., in press) that plasma drags forces from the corotating plasma will rapidly evolve E-ring particle orbits to increasing distance from Saturn until a point is reached where radiation drag forces acting to decrease orbital radius balance this outward acceleration. This occurs at approximately Rhea's orbit, although the exact value is subject to many uncertainties. The time scale for plasma drag to move particles from Enceladus' orbit to the outer E-ring is ~104yr. A variety of effects also act to remove particles, primarily sputtering by both high energy charged particles (Cheng et al., 1982, J. Geophys. Res., in press) and corotating plasma (Morfill et al., 1982). The time scale for sputtering away one micron particles is also short, 102 - 10 yrs. Thus the detailed particle density profile in the E-ring is set by a competition between orbit evolution and particle removal. The high density region near Enceladus' orbit may result from the sputtering yeild of corotating ions being less than unity at this radius (e.g. Eviatar et al., 1982, Saturn meeting). In any case, an active source of E-ring material is required if the feature is not very ephemeral - Enceladus itself, with its geologically recent surface, appears still to be the best candidate for the ultimate source of E-ring material.

Analysis of electron-diffraction intensity profiles using a photodiode-array detection system

1983 ◽  
Vol 41 ◽  
pp. 322-323
Author(s):  
J. B. Warren
Keyword(s):  
Electron Diffraction ◽  
Diffraction Pattern ◽  
Detection System ◽  
High Energy ◽  
Photographic Emulsion ◽  
Diffraction Intensity ◽  
Silicon Photodiode ◽  
Photodiode Array Detection ◽  
Analog To Digital ◽  
Photodiode Array

Electron diffraction intensity profiles have been used extensively in studies of polycrystalline and amorphous thin films. In previous work, diffraction intensity profiles were quantitized either by mechanically scanning the photographic emulsion with a densitometer or by using deflection coils to scan the diffraction pattern over a stationary detector. Such methods tend to be slow, and the intensities must still be converted from analog to digital form for quantitative analysis. The Instrumentation Division at Brookhaven has designed and constructed a electron diffractometer, based on a silicon photodiode array, that overcomes these disadvantages. The instrument is compact (Fig. 1), can be used with any unmodified electron microscope, and acquires the data in a form immediately accessible by microcomputer.Major components include a RETICON 1024 element photodiode array for the de tector, an Analog Devices MAS-1202 analog digital converter and a Digital Equipment LSI 11/2 microcomputer. The photodiode array cannot detect high energy electrons without damage so an f/1.4 lens is used to focus the phosphor screen image of the diffraction pattern on to the photodiode array.

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