On the Production of Hypernuclei Using Fast Kaons

1973 ◽  
Vol 51 (14) ◽  
pp. 1524-1533 ◽  
Author(s):  
Robert James Esch
Keyword(s):  
Wave Function ◽  
Mass Spectrum ◽  
Momentum Transfer ◽  
Cross Sections ◽  
Differential Cross ◽  
Interaction Model ◽  
Impulse Approximation ◽  
Direct Interaction ◽  
Single Scattering ◽  
Nuclear Targets

The differential cross sections for the production of definite lambda hypernuclear states are calculated for the reaction n(K−, π−)Λ° on nuclear targets of helium, carbon, and oxygen at incident momenta from 500 to 800 MeV/c. A direct interaction model is used, employing the single scattering, impulse approximation. It is shown that these predictions are very sensitive to the three-momentum transfer and to the wave function of the bound lambda in the hypernucleus. Possible experimental consequences are discussed concerning the observation of hypernucleus production by studying the missing mass spectrum of the emitted pion.

Electron scattering from germanium tetrafluoride

RSC Advances ◽  
2014 ◽  
Vol 4 (109) ◽  
pp. 63817-63823 ◽  
Author(s):  
Biplab Goswami ◽  
Rahla Naghma ◽  
Bobby Antony
Keyword(s):  
Momentum Transfer ◽  
Electron Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Shape Resonance ◽  
Differential Cross Sections ◽  
Rotational Excitation ◽  
R Matrix ◽  
High Energies ◽  
Germanium Tetrafluoride

R-matrix and SCOP methods are used at low and high energies respectively to find e-GeF4 TCS. Electronic and rotational excitation, momentum transfer and elastic differential cross sections are also calculated. A shape resonance is observed at 5.7 eV.

Λ-HYPERNUCLEUS PRODUCTION IN PROTON-INDUCED REACTION

2009 ◽  
Vol 18 (02) ◽  
pp. 302-308
Author(s):  
PENGNIAN SHEN ◽  
HANTAO JING ◽  
HUANQING CHIANG
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Production Cross Section ◽  
Production Cross ◽  
Impulse Approximation ◽  
Core Nucleus ◽  
The Cross ◽  
Proton Induced Reaction ◽  
Induced Reaction

The Λ-hypernucleus (LHN) production in the proton-induced reaction is studied in the distorted wave impulse approximation(DWIA). The cross sections for the LHN production in the reactions where the proton bombards the 6Li, 12C and 16O targets, respectively, are calculated. It is shown that the reaction cross sections are of the order of μb, and the distortion effects tend to reduce the cross sections by a factor of 3~10. For the sΛ–LHN production, the differential cross section is decreased with the increasing mass of the target nucleus. The pΛ–LHN production cross section is normally higher than that for the sΛ–LHN production. The double differential cross sections (DDXS) with respect to the momenta of the outgoing proton and kaon are also demonstrated. The missing mass spectra of the inclusive reaction p+A → p+K++X for the 6Li, 12C and 16O targets, an alternative way to study hypernuclear physics, are proposed. From these spectra, the masses of LHN can accurately be extracted. Moreover, the exotic LHN production in the same type of reaction is also studied . The same physical quantities are calculated. It is shown that the magnitude of the cross section is also in the order of μb. The halo effect of the core nucleus that locates at a place far away from the stable line would make the wave function broader, and consequently reduces the production cross section.

Exclusive J/ψ photoproduction in a diffractive process using the AdS/QCD holographic wave function in BLFQ

2018 ◽  
Vol 33 (07) ◽  
pp. 1850034
Author(s):  
Ya-Ping Xie ◽  
Xurong Chen
Keyword(s):  
Experimental Data ◽  
Wave Function ◽  
Cross Sections ◽  
Differential Cross ◽  
Light Front ◽  
Total Cross Sections ◽  
Diffractive Process ◽  
Text Production ◽  
Light Front Quantization ◽  
Dipole Picture

AdS/QCD is implemented to calculate the basis light-front quantization (BLFQ) wave function for [Formula: see text] meson. Exclusive [Formula: see text] photoproduction is computed in the dipole picture using this holographic wave function. The bCGC model is employed in the calculation of [Formula: see text] production for dipole amplitude. The differential cross-sections and total cross-sections of [Formula: see text] meson are computed and compared with the experimental data. We find that the AdS/QCD holographic wave function in BLFQ can be employed as a new candidate for the light-front wave function of [Formula: see text] meson in diffractive process.

scholarly journals Transverse Momentum Transfer Distributions Following Single Ionization in 3.6 MeV/amu Au53+ + He Collisions: A 4-Body Classical Treatment

Atoms ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 68 ◽  
Author(s):  
François Frémont
Keyword(s):  
Transverse Momentum ◽  
Momentum Transfer ◽  
Cross Sections ◽  
Electron Emission ◽  
Differential Cross ◽  
Classical Model ◽  
Equations Of Motion ◽  
Free Electrons ◽  
Hamilton Equations ◽  
Momentum Distributions

A four-body classical model based on the resolution of Hamilton equations of motion was used here to determine and analyze ionization doubly-differential cross sections following 3.6 MeV/amu Au53+ + He collisions. Our calculation was not able to reproduce the binary peaks experimentally observed in the transverse momentum distributions for electron emission energies larger than 10 eV. Surprisingly, by introducing a large number of free or quasi-free electrons that followed the projectile at the same velocity, the agreement between the experiment and our calculation was improved, since our model reproduced, at least qualitatively, the experimental binary peaks. The origin of the presence of such electrons is discussed.

The determination of molecular scattering differential cross sections for compounds of some essential elements at 3.38 Å−1 photon momentum transfer

2016 ◽  
Vol 94 (5) ◽  
pp. 497-500 ◽  
Author(s):  
Burcu Akça ◽  
Salih Erzeneoğlu
Keyword(s):  
Momentum Transfer ◽  
Cross Sections ◽  
Differential Cross ◽  
Essential Elements ◽  
Differential Cross Sections ◽  
Molecular Scattering ◽  
Photon Momentum ◽  
X Ray ◽  
Γ Rays

Molecular scattering differential cross sections of 59.5 keV γ-rays have been measured for some compounds of Na, Mg, Al, Ca, and Fe elements at 90°. The γ-rays of Am-241 were counted using a Si(Li) detector of EDXRF (energy dispersive X-ray fluorescence) system. The experimental results have been compared with non-relativistic and relativistic theoretical values.

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