Target mass dependence and intranuclear cascade in high energy nucleus-nucleus collisions

1990 ◽  
Vol 46 (2) ◽  
pp. 335-339 ◽  
Author(s):  
Zhuang Pengfei ◽  
Liu Lianshou
Keyword(s):  
High Energy ◽  
Mass Dependence ◽  
Target Mass ◽  
Intranuclear Cascade

SOME CHARACTERISTICS OF THE COMPOUND MULTIPLICITY IN HIGH-ENERGY NUCLEUS–NUCLEUS INTERACTIONS

2011 ◽  
Vol 20 (08) ◽  
pp. 1735-1754 ◽  
Author(s):  
M. MOHERY ◽  
M. ARAFA
Keyword(s):  
Experimental Data ◽  
Impact Parameter ◽  
Mass Number ◽  
Multiplicity Distribution ◽  
High Energy ◽  
Projectile Nucleus ◽  
Target Mass ◽  
Compound Multiplicity ◽  
Multiplicity Distributions ◽  
The Impact

The present paper deals with the interactions of 22 Ne and 28 Si nuclei at (4.1–4.5)A GeV /c with emulsion. Some characteristics of the compound multiplicity nc given by the sum of the number of shower particles ns and grey particles ng have been investigated. The present experimental data are compared with the corresponding ones calculated according to modified cascade evaporation model (MCEM). The results reveal that the compound multiplicity distributions for these two reactions are consistent with the corresponding ones of MCEM data. It can also be seen that the peak of these distributions shifts towards a higher value of nc with increasing projectile mass. It may further be seen that the compound multiplicity distributions becomes broader with increasing target size and its width increases with the size of the projectile nucleus. In addition, it has been found that the MCEM can describe the compound multiplicity characteristics of the different projectile, target and the correlation between different emitted particles. The values of average compound multiplicity increase with increasing mass of the projectile. Furthermore, it is observed that while the value of 〈nc〉 depends on the mass number of the projectile Ap and the target mass number At, the value of the ratio 〈nc〉/D(nc) seems to be independent of Ap and At. The impact parameter is found to affect the shape of the compound multiplicity distribution. Finally, the dependence of the average compound multiplicity on the numbers of grey and black particles, and the sum of them, is obvious. The values of the slope have been found to be independent of the projectile nucleus.

scholarly journals Exact quark-mass dependence of the Higgs-photon form factor at three loops in QCD

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Marco Niggetiedt
Keyword(s):  
Form Factor ◽  
Higgs Boson ◽  
Quark Mass ◽  
Variable Mass ◽  
High Energy ◽  
Mass Dependence ◽  
Leading Order ◽  
Energy Limit ◽  
Quark Mass Dependence

Abstract We follow up on our discussion of the exact quark-mass dependence of the Higgs-gluon form factor at three loops in QCD [1] and turn our attention to the closely related Higgs-photon form factor. Similarly to our previous work, we intend to examine the form factor for the decay of a Higgs-boson with variable mass into two photons at the three-loop level in QCD. The set of master integrals is known numerically due to prior work on the Higgs-gluon form factor and is exploited to obtain expansions around the threshold as well as in the high-energy limit. Our results may be utilised to derive the photonic decay rate of the Higgs-boson through next-to-next-to-leading order.

scholarly journals Recent Developments of the Liège Intranuclear Cascade Model in View of its Use into High-energy Transport Codes

2014 ◽  
Vol 118 ◽  
pp. 312-315 ◽  
Author(s):  
S. Leray ◽  
A. Boudard ◽  
B. Braunn ◽  
J. Cugnon ◽  
J.C. David ◽  
...  
Keyword(s):  
Energy Transport ◽  
High Energy ◽  
Cascade Model ◽  
Intranuclear Cascade ◽  
Recent Developments

scholarly journals Lévy HBT Results at NA61/SHINE

Universe ◽  
2019 ◽  
Vol 5 (6) ◽  
pp. 154 ◽  
Author(s):  
Barnabás Pórfy
Keyword(s):  
Source Parameters ◽  
High Energy ◽  
Space Time ◽  
Time Structure ◽  
Transverse Mass ◽  
Mass Dependence ◽  
Space Time Structure ◽  
Bose Einstein

Bose–Einstein (or Hanbury–Brown and Twiss (HBT)) momentum correlations reveal the space–time structure of the particle emitting source created in high energy nucleus–nucleus collisions. In this paper we present the latest NA61/SHINE measurements of Bose–Einstein correlations of identified pion pairs and their description based on Lévy distributed sources in Be + Be collisions at 150A GeV/c. We investigate the transverse mass dependence of the Lévy source parameters and discuss their possible interpretations.

scholarly journals Target-mass dependence of the break-up of halo nuclei

2001 ◽  
Vol 503 (1-2) ◽  
pp. 65-69 ◽  
Author(s):  
M.A Nagarajan ◽  
C.H Dasso ◽  
S.M Lenzi ◽  
A Vitturi
Keyword(s):  
Halo Nuclei ◽  
Mass Dependence ◽  
Target Mass ◽  
Break Up

scholarly journals Nuclear Fluid Dynamics versus Intranuclear Cascade—Possible Evidence for Collective Flow in Central High-Energy Nuclear Collisions

1981 ◽  
Vol 47 (25) ◽  
pp. 1807-1810 ◽  
Author(s):  
H. Stöcker ◽  
C. Riedel ◽  
Y. Yariv ◽  
L. P. Csernai ◽  
G. Buchwald ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
High Energy ◽  
Collective Flow ◽  
Nuclear Collisions ◽  
Intranuclear Cascade ◽  
Central High

Target mass dependence of neutron emission in collisions with 35 MeV/nucleonN14ions

1988 ◽  
Vol 38 (1) ◽  
pp. 170-178 ◽  
Author(s):  
A. Kiss ◽  
F. Deák ◽  
Z. Seres ◽  
G. Caskey ◽  
A. Galonsky ◽  
...  
Keyword(s):  
Neutron Emission ◽  
Mass Dependence ◽  
Target Mass

ON THE PROJECTILE MASS DEPENDENCE OF AZIMUTHAL CORRELATIONS IN INTERACTIONS WITH EMULSION TARGET NUCLEI

1989 ◽  
Vol 04 (15) ◽  
pp. 3779-3790
Author(s):  
S. K. BADYAL ◽  
A. BHASIN ◽  
V. K. GUPTA ◽  
S. KITROO ◽  
J. KOHLI ◽  
...  
Keyword(s):  
Charged Particles ◽  
Mass Dependence ◽  
Correlation Parameter ◽  
Azimuthal Correlations ◽  
Target Mass ◽  
The Asymmetry

We have observed strong two-particle azimuthal correlations in different groups of charged particles in Kr-Em interactions at 1.4 A GeV . We also found a systematic growth of correlation with the increase of projectile mass and also with respect to participating target mass. The parameters studied are the asymmetry coefficients (A and <α>) and intergroup correlation parameter <Φij>. The colinearity coefficients (B and <β>) were also studied but no statistically significant signal, except for Z = 2 (He) fragments from the projectile was found.

Fragment mass dependence of the high-energy γ-ray spectrum in fission

1996 ◽  
Vol 355 (4) ◽  
pp. 401-405 ◽  
Author(s):  
J. B. Fitzgerald ◽  
D. Habs ◽  
F. Heller ◽  
P. Reiter ◽  
D. Schwalm ◽  
...  
Keyword(s):  
High Energy ◽  
Mass Dependence ◽  
Fragment Mass ◽  
Γ Ray
Sign in / Sign up

Export Citation Format

Share Document