Vector dominance and decrease of the differential cross section of lepton-pair production at high energies and large scattering angles

1971 ◽  
Vol 7 (2) ◽  
pp. 465-466
Author(s):  
M. A. Mestvirishvili
Keyword(s):  
Differential Cross Section ◽  
Pair Production ◽  
Cross Section ◽  
Differential Cross ◽  
Lepton Pair ◽  
Lepton Pair Production ◽  
High Energies ◽  
Vector Dominance

HEAVY LEPTON PAIR PRODUCTION FROM NEW Z’ RESONANCES

1987 ◽  
Vol 02 (04) ◽  
pp. 1189-1197
Author(s):  
J.L. Hewett ◽  
T.G. Rizzo
Keyword(s):  
Pair Production ◽  
Cross Section ◽  
Gauge Boson ◽  
Production Cross Section ◽  
Production Cross ◽  
Lepton Pair ◽  
Lepton Production ◽  
Heavy Lepton ◽  
Neutral Gauge Boson ◽  
Lepton Pair Production

We examine the possibility that heavy lepton pair production can be significantly enhanced by the existence of a new neutral gauge boson, Z’, at SSC energies. We find that in some models, the heavy lepton production cross section resulting from this mechanism exceeds that from production via other scenarios.

SCATTERING AMPLITUDE ZERO IN dū→γH−

1988 ◽  
Vol 03 (12) ◽  
pp. 1199-1203 ◽  
Author(s):  
XIAO-GANG HE ◽  
H. LEW
Keyword(s):  
Angular Distribution ◽  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Scattering Amplitude ◽  
Higgs Bosons ◽  
Factorization Property ◽  
High Energies ◽  
Charged Higgs ◽  
Charged Higgs Bosons

In models with physical charged Higgs bosons, the angular distribution of dū→γH− exhibits a factorization property. The differential cross section has a zero at the scattering cos -1(-⅓) in the γH− C.M. frame. The processes [Formula: see text] are also studied. It is found, at high energies, that the contribution of the sea quarks are significant enough to wash the zero away.

ELASTIC pd SCATTERING AT HIGH ENERGIES

1988 ◽  
Vol 03 (05) ◽  
pp. 1301-1319 ◽  
Author(s):  
V.M. BRAUN ◽  
L.G. DAKHNO ◽  
V.A. NIKONOV
Keyword(s):  
Experimental Data ◽  
Differential Cross Section ◽  
Multiple Scattering ◽  
Cross Section ◽  
Differential Cross ◽  
Scattering Theory ◽  
High Energy ◽  
Multiple Scattering Theory ◽  
High Energies

High energy differential pd cross section is calculated in the framework of the multiple scattering theory, inelastic correction included. Special attention is paid to the analysis of the calculation uncertainties. The results agree well with the experimental data obtained at ISR energies in the q2 range 0.06–1.05 (GeV/c) 2. The calculation accuracy is proved to be not worse than 10–20% at q2~0.2 (GeV/c) 2 and much better at small q2, namely, ~1% in the optical point. Prediction for the differential cross section at UNK energy E lab =3 TeV is given.

scholarly journals Top Quark Pair-Production in Noncommutative Standard Model

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
M. Fisli ◽  
N. Mebarki
Keyword(s):  
Lower Bound ◽  
Standard Model ◽  
Differential Cross Section ◽  
Pair Production ◽  
Cross Section ◽  
Differential Cross ◽  
Top Quark ◽  
Tree Level ◽  
Hadron Collision ◽  
Geometry Parameter

The differential cross-section of the top quark pair production via the quark-antiquark annihilation subprocess in hadron collision is calculated within the noncommutative standard model. A pure NC analytical expression for the forward-backward asymmetry at the tree level is obtained. Moreover, using recent Tevatron results from the full RUN2 data, a new lower bound on the noncommutative geometry parameter is deduced.

2S Excitation of atomic hydrogen by electron impact at high energies

1983 ◽  
Vol 61 (5) ◽  
pp. 748-752 ◽  
Author(s):  
N. Saha
Keyword(s):  
Differential Cross Section ◽  
Total Cross Section ◽  
Electron Impact ◽  
Cross Section ◽  
Differential Cross ◽  
Atomic Hydrogen ◽  
Excitation Cross Section ◽  
High Energies ◽  
Comparison Of The Results ◽  
Theoretical Results

The 2S excitation cross section of atomic hydrogen by electron impact at high energies has been calculated following the method of Das. Comparison of the results for the differential cross section with other theoretical results, and comparison of the results for the total cross section with those of other theories and experiments, shows that the results of the present calculations are fairly accurate.

Neutrino-induced heavy-lepton pair production at high energies and multimuon events

1979 ◽  
Vol 20 (1) ◽  
pp. 99-104 ◽  
Author(s):  
D. J. Bechis ◽  
C. Y. Chang ◽  
K. H. Lau
Keyword(s):  
Pair Production ◽  
Lepton Pair ◽  
Heavy Lepton ◽  
Lepton Pair Production ◽  
High Energies

Pair production by muons in the field of nuclei

1968 ◽  
Vol 46 (10) ◽  
pp. S387-S390 ◽  
Author(s):  
S. R. Kelner ◽  
Yu. D. Kotov
Keyword(s):  
Numerical Calculation ◽  
Differential Cross Section ◽  
Energy Loss ◽  
Pair Production ◽  
Cross Section ◽  
Differential Cross ◽  
Muon Energy ◽  
Fermi Model ◽  
Electron Pairs ◽  
Analytical Expressions

The differential cross section for the production of electron pairs by muons has been obtained under the assumption that all particles are relativistic and that the Thomas–Fermi model can be used to evaluate the effect of screening. Analytical expressions have been obtained for the energy loss of muons by pair production for the two extreme cases of "no screening" and "complete screening". Results of numerical calculation of energy loss by this process are given as a function of muon energy, for rock with Z = 11.

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