scholarly journals A resonance interpretation for the nonmonotonic behavior of the ϕ photoproduction cross section near threshold

2011 ◽  
Author(s):  
Shin Nan Yang ◽  
Alvin Kiswandhi ◽  
Ju-Jun Xie ◽  
Atsushi Hosaka ◽  
Kanchan Khemchandani ◽  
...  
Keyword(s):  
Cross Section ◽  
Photoproduction Cross Section ◽  
Nonmonotonic Behavior ◽  
Near Threshold

scholarly journals NUMERICAL STUDY OF RADIATIVE CORRECTIONS IN THE LOW Q2 REGION AT HERA

1994 ◽  
Vol 09 (18) ◽  
pp. 3229-3244
Author(s):  
K. CHARCHULA ◽  
J. GAJEWSKI
Keyword(s):  
Cross Section ◽  
Numerical Study ◽  
Radiative Corrections ◽  
Hadronic Final State ◽  
Radiative Effects ◽  
Final State ◽  
Cross Section Measurement ◽  
Photoproduction Cross Section ◽  
Section Measurement

A detailed numerical study of radiative corrections in the low Q2 region at the HERA ep collider was performed. The specific case of the total photoproduction cross section measurement was taken as an example. Two different programs, TERAD91 and HER-ACLES4.2, were used to get an estimate of the size of radiative effects. It was found that radiative corrections can be quite large at some points of the space of leptonic (x, y) variables. However, after imposing experimentally feasible cuts on the radiated photon and the hadronic final state one gets corrections at the level of a few per cent.

Near-threshold triple-photoionization cross section of lithium

2000 ◽  
Vol 61 (3) ◽  
Author(s):  
R. Wehlitz ◽  
T. Pattard ◽  
M.-T. Huang ◽  
I. A. Sellin ◽  
J. Burgdörfer ◽  
...  
Keyword(s):  
Cross Section ◽  
Photoionization Cross Section ◽  
Near Threshold

Near-threshold electron-impact ionization cross section for sulfur atoms

2007 ◽  
Vol 76 (3) ◽  
pp. 521-523
Author(s):  
F.F. Chipev ◽  
A.A. Borovik ◽  
I.V. Chernyshova ◽  
J.E. Kontros ◽  
O.B. Shpenik
Keyword(s):  
Electron Impact ◽  
Cross Section ◽  
Ionization Cross Section ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Ionization Cross ◽  
Near Threshold

Photodissociation of H2 near Threshold Energies

1970 ◽  
Vol 25 (2) ◽  
pp. 237-242 ◽  
Author(s):  
F. J. Comes ◽  
U. Wenning
Keyword(s):  
Electric Field ◽  
Cross Section ◽  
Configuration Interaction ◽  
Atomic Hydrogen ◽  
Molecular Hydrogen ◽  
Hydrogen Atoms ◽  
Dissociation Cross Section ◽  
Excited Molecules ◽  
Threshold Energies ◽  
Near Threshold

Abstract Measurements of the atomic hydrogen fluorescence (Lyα) yield important information on the dissociation behavior of molecular hydrogen under photon impact. Under certain assumptions the dissociation cross section of the molecule can be deduced from such experiments. By applying an appropriate electric field in the observation region those dissociations leading to the formation of metastable hydrogen atoms can be quantitatively determined. This information opens the possibility to describe the predissociation of the excited H2-molecules in the C-, D-and B″-states. The experiments show that the excited molecules in these particular states dissociate into H(1S) and H(2S) by configuration interaction with the B′-state.

Neutron Photoproduction Cross Section of Calcium

1963 ◽  
Vol 132 (2) ◽  
pp. 749-751 ◽  
Author(s):  
K. Min ◽  
L. N. Bolen ◽  
W. D. Whitehead
Keyword(s):  
Cross Section ◽  
Photoproduction Cross Section
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