Application of Moffat's Model to η → 3π and K → 3π Decays

1972 ◽  
Vol 50 (12) ◽  
pp. 1346-1349
Author(s):  
Donald Smith ◽  
Charles Picciotto
Keyword(s):  
Energy Region ◽  
Low Energy ◽  
Fair Agreement ◽  
Mandelstam Representation ◽  
Regge Behavior ◽  
Crossing Symmetry ◽  
Low Energies

Moffat's model for meson–meson scattering, satisfying the Mandelstam representation, crossing symmetry, and Regge behavior, is applied to η → 3π and K → 3π decays. It is found that agreement with the data is excellent when the model is used with Lovelace's trajectory, but not as good with Moffat's trajectory. The model is also applied to the process [Formula: see text], and fair agreement is found in the low energy region; however, since the model is unitary only at low energies, no strong conclusions can be reached in this case.

Pion–pion scattering in a model satisfying crossing symmetry, analyticity, and approximate unitarity

1976 ◽  
Vol 54 (10) ◽  
pp. 1022-1033
Author(s):  
D. H. Boal ◽  
J. W. Moffat
Keyword(s):  
Phase Shift ◽  
Energy Region ◽  
Detailed Comparison ◽  
Phase Shifts ◽  
Low Energy ◽  
Pion Scattering ◽  
Crossing Symmetry ◽  
Mandelstam Analyticity ◽  
Good Agreement

Phase shifts for π–π scattering are obtained from a model satisfying Mandelstam analyticity, exact crossing symmetry, and approximate unitarity in the range 2mπ ≤ s1/2 ≤ 1.3 GeV. The low energy region is dominated by the ρ, ε, and S* poles; the δ00 phase shift is in good agreement with the data obtained by Protopopescu et al. A detailed comparison is made with the available world's data on π–π scattering.

scholarly journals Study of the nuclear medium by 12C + 12C elastic scattering analysis at low energy region

2017 ◽  
Vol 1 (T2) ◽  
pp. 75-82
Author(s):  
Chien Hoang Le ◽  
Cuong Cong Do ◽  
Phuc Hoang Nguyen ◽  
Khoa Tien Dao
Keyword(s):  
Elastic Scattering ◽  
Energy Region ◽  
Optical Model ◽  
Nucleon Nucleon ◽  
Wave Functions ◽  
Low Energy ◽  
Nuclear Medium ◽  
Density Approximation ◽  
Low Energies ◽  
Double Folding

The nuclear medium is investigated by studying the 12C + 12C elastic scattering at the low energies in the framework of optical model (OM) potential. Both frozen and adiabatic density approximations are used for the description of the nuclear medium during the colliding process. In the OM calculation, the double folding procedure using the realistic CDM3Y3 effective nucleon-nucleon (NN) interactions and the wave functions of colliding nuclei is employed to describe the nucleus-nucleus potential at low energy region below 10 MeV per nucleon. The obtained results from the elastic scattering analyses show that the adiabatic density approximation is more reasonable than the frozen density approximation to describe the overlapping density (the so-called nuclear medium) for the 12C + 12C system at low energy region.

Electrical Damage Due to Low Energy Plasma Processing of GaAs Structures

1991 ◽  
Vol 223 ◽  
Author(s):  
Hans P. Zappe ◽  
Gudrun Kaufel
Keyword(s):  
Chemical Processes ◽  
Low Energy ◽  
Electrical Behavior ◽  
Rapid Thermal Anneal ◽  
High Temperature Anneal ◽  
Significant Damage ◽  
Low Energies ◽  
Long Time ◽  
Physical Plasma

ABSTRACTThe effect of numerous plasma reative ion etch and physical milling processes on the electrical behavior of GaAs bulk substrates has been investigated by means of electric microwave absorption. It was seen that plasma treatments at quite low energies may significantly affect the electrical quality of the etched semiconductor. Predominantly physical plasma etchants (Ar) were seen to create significant damage at very low energies. Chemical processes (involving Cl or F), while somewhat less pernicious, also gave rise to electrical substrate damage, the effect greater for hydrogenic ambients. Whereas rapid thermal anneal treatments tend to worsen the electrical integrity, some substrates respond positively to long-time high temperature anneal steps.

Relative efficiency calibration of Ge(Li) detector in low energy region

1976 ◽  
Vol 29 (2) ◽  
pp. 301-308 ◽  
Author(s):  
S. Baba ◽  
T. Suzuki
Keyword(s):  
Relative Efficiency ◽  
Energy Region ◽  
Low Energy ◽  
Efficiency Calibration

Comment on ‘The screening effect of D–D fusion in Sm in sub-low energy region (≤20 keV)’

2008 ◽  
Vol 35 (6) ◽  
pp. 068001
Author(s):  
T S Wang ◽  
Z Yang ◽  
H Yunemura ◽  
A Nakagawa ◽  
H Y Lv ◽  
...  
Keyword(s):  
Energy Region ◽  
Low Energy ◽  
Screening Effect

Inelastic collisions at low energies

1969 ◽  
Vol 47 (10) ◽  
pp. 1723-1729 ◽  
Author(s):  
A. Dalgarno
Keyword(s):  
Energy Loss ◽  
Cross Sections ◽  
Low Energy ◽  
Inelastic Collisions ◽  
Low Energies ◽  
Low Energy Electrons ◽  
The Cross ◽  
Loss Rates

A summary is presented of the processes by which low energy electrons lose energy in moving through the atmosphere and estimates are given of the cross sections and energy loss rates. The mechanisms by which thermal electrons cool are described and the cooling efficiencies are listed.

Preliminary Measurement of the K-Shell Ionization Cross Sections of Ti by Positron Impact in the Low Energy Region

2012 ◽  
Vol 14 (5) ◽  
pp. 434-437 ◽  
Author(s):  
Lixia Tian ◽  
Mantian Liu ◽  
Jingjun Zhu ◽  
Zhu An ◽  
Baoyi Wang ◽  
...  
Keyword(s):  
Cross Sections ◽  
Energy Region ◽  
Low Energy ◽  
Positron Impact ◽  
Ionization Cross ◽  
Preliminary Measurement ◽  
Ionization Cross Sections ◽  
Shell Ionization

Perturbative QCD effects in the non-perturbative low energy region

1985 ◽  
Vol 165 (1-3) ◽  
pp. 187-192 ◽  
Author(s):  
Hector R. Rubinstein ◽  
Håkan Snellman
Keyword(s):  
Perturbative Qcd ◽  
Energy Region ◽  
Low Energy

scholarly journals Exploring $$\hbox {CE}\nu \hbox {NS}$$ with NUCLEUS at the Chooz nuclear power plant

2019 ◽  
Vol 79 (12) ◽  
Author(s):  
G. Angloher ◽  
F. Ardellier-Desages ◽  
A. Bento ◽  
L. Canonica ◽  
A. Erhart ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Sensitivity Study ◽  
New Physics ◽  
Low Energy ◽  
Cryogenic Detectors ◽  
Reduction Techniques ◽  
Low Energies ◽  
Nuclear Recoils

AbstractCoherent elastic neutrino–nucleus scattering ($$\hbox {CE}\nu \hbox {NS}$$CEνNS) offers a unique way to study neutrino properties and to search for new physics beyond the Standard Model. Nuclear reactors are promising sources to explore this process at low energies since they deliver large fluxes of anti-neutrinos with typical energies of a few MeV. In this paper, a new-generation experiment to study $$\hbox {CE}\nu \hbox {NS}$$CEνNS is described. The NUCLEUS experiment will use cryogenic detectors which feature an unprecedentedly low-energy threshold and a time response fast enough to be operated under above-ground conditions. Both sensitivity to low-energy nuclear recoils and a high event rate tolerance are stringent requirements to measuring $$\hbox {CE}\nu \hbox {NS}$$CEνNS of reactor anti-neutrinos. A new experimental site, the Very-Near-Site (VNS), at the Chooz nuclear power plant in France is described. The VNS is located between the two 4.25 $$\hbox {GW}_{\mathrm {th}}$$GWth reactor cores and matches the requirements of NUCLEUS. First results of on-site measurements of neutron and muon backgrounds, the expected dominant background contributions, are given. In this paper a preliminary experimental set-up with dedicated active and passive background reduction techniques and first background estimations are presented. Furthermore, the feasibility to operate the detectors in coincidence with an active muon veto at shallow overburden is studied. The paper concludes with a sensitivity study pointing out the physics potential of NUCLEUS at the Chooz nuclear power plant.

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