Multiplicity of Secondary Particles in Inelastic Proton - Neon Interactions at 300-{GeV}/$c$

Azimov, S.A. ; Inogamov, Sh.V. ; Kosonovsky, E.A. ; et al.
Phys.Rev.D 23 (1981) 2512, 1981.
Inspire Record 10318 DOI 10.17182/hepdata.17871

The data on the total inelastic and partial cross sections in pNe interactions at 300 GeV are presented. It is found that the total cross section, σin(pNe)=356±13 mb, and multiplicity distributions of the number of negative and relativistic charged particles are in good agreement with predictions of a multiple-scattering model based on Glauber's approach. The multiplicity of negative particles obeys the Koba-Nielsen-Olesen (KNO) scaling, but it is observed that the KNO function depends on the atomic mass number of the target. From an analysis of the average multiplicities of secondary particles, it is shown that approximately 10 percent of the fast (p≳1.2 GeV) positive secondaries are protons, which are derived from the nucleons in the neon nucleus.

13 data tables

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Inclusive Charged Particle Production in Neutron - Nucleus Collisions

Chaney, D. ; Ferbel, T. ; Slattery, P. ; et al.
Phys.Rev.D 19 (1979) 3210, 1979.
Inspire Record 7658 DOI 10.17182/hepdata.47089

We have measured charged-particle production in neutron-nucleus collisions at high energy. Data on positive and negative particles produced in nuclei [ranging in atomic number (A) from beryllium to lead] are presented for essentially the full forward hemisphere of the center-of-mass system. A rough pion-proton separation is achieved for the positive spectra. Fits of the form Aα to the cross sections are presented as functions of transverse momentum, longitudinal momentum, rapidity, and pseudorapidity. It is found that α changes from ∼0.85 to ∼0.60 for laboratory rapidities ranging from 4 to 8. Trends in the data differ markedly when examined in terms of pseudorapidity rather than rapidity. Qualitatively, the major features of our data can be understood in terms of current particle-production models.

6 data tables

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HADRON PRODUCTION IN INCLUSIVE PROCESSES IN PROTON - NUCLEAR COLLISIONS AT 67-GeV/c

Bozhko, N.I. ; Borisov, A.A. ; Vovenko, A.S. ; et al.
Yad.Fiz. 31 (1980) 1494-1500, 1980.
Inspire Record 142571 DOI 10.17182/hepdata.11063

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50 data tables

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MULTIPLICITY OF PI- MESONS IN INELASTIC INTERACTIONS OF PROTONS WITH NUCLEI OF C AND TA IN THE MOMENTUM INTERVAL 2-GEV/C 10-GEV/C. (IN RUSSIAN)

Baatar, Ts. ; Gasparian, A.P. ; Gafurov, G.G. ; et al.
Yad.Fiz. 32 (1980) 1372-1378, 1980.
Inspire Record 159805 DOI 10.17182/hepdata.39915

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MULT NORMALIZED ON INELASTIC EVENTS IN A MODEL DEPENDENT FASION. LOOP-VER.

MULT IN YN ARE NORMYLIZED ON EVENTS WITH AT LEAST ONE CHARGED-.

MULT AND MULT2 IN THIS TABLE NORMALIZED ON EVENT VITH AT LEAST ONE CHARGED- IN THE FINAL STATE.


Multiplicities of Secondary Pions in Relativistic Nucleus-nucleus Collisions and the Distribution of the Number of Interacting Nucleons of the Incident Nucleus

Bartke, J. ;
Abstract Only In *Berkeley 1980, Proceedings, Nuclear Physics, Vol. 1*, 541, 1980.
Inspire Record 156735 DOI 10.17182/hepdata.39555
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Proton distributions in the target fragmentation region in proton - nucleus and nucleus-nucleus collisions at high-energies

The HELIOS collaboration Åkesson, T. ; Almehed, S. ; Angelis, A.L. S. ; et al.
Z.Phys.C 53 (1992) 183-192, 1992.
Inspire Record 317494 DOI 10.17182/hepdata.14773

We present measurements of the rapidity and transverse-momentum distributions of the protons emitted in S+W, O+W, andp+W reactions at 200 GeV/A around the target rapidity (y=1). The rapidity density rises linearly with the transverse energy for all three systems, but the slope forp+W is much steeper than for O+W and S+W. The rapidity density forp+W is much higher than predicted by summing single nucleonnucleon collisions without any nuclear effects, indicating substantial rescattering of the produced particles. The predictions of the VENUS 3 model, including rescattering, show reasonable agreement with the data for all three systems. We do not have evidence for a strong collective flow of the outgoing particles.

39 data tables

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Inclusive Negative Particle $p(T$) Spectra in $P$ - Nucleus and Nucleus-nucleus Collisions at 200-{GeV} Per Nucleon

The Helios collaboration Åkesson, T. ; Almehed, S. ; Angelis, A.L. S. ; et al.
Z.Phys.C 46 (1990) 361-368, 1990.
Inspire Record 282897 DOI 10.17182/hepdata.15239

The HELIOS experiment has measured inclusivep⊥ spectra of negative particles in the rapidity region 1.0<y<1.9. The general shape of thep⊥ spectra in p +W, O+W and S+W is similar, but cannot be described by a single exponential. Compared to p+p collisions, an excess is observed for low and highp⊥. This effect increases with the projectile mass. Except for very lowE⊥, the average transverse momentum <p⊥> is found to be approximately constant up to the highest accessible values ofE⊥.

3 data tables

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Multiparticle Production by 200-GeV/c Hadrons on Gold, Silver, and Magnesium Targets

Brick, D.H. ; Widgoff, M. ; Beilliere, P. ; et al.
Phys.Rev.D 39 (1989) 2484-2493, 1989.
Inspire Record 282254 DOI 10.17182/hepdata.23227

We have used the Fermilab 30-in. bubble-chamber hybrid spectrometer to study multiparticle production in the interactions of 200-GeV/c protons and π+ and K+ mesons with nuclei of gold, silver, and magnesium. We find that the multiplicities of produced particles and negative particles increase linearly with the number of projectile collisions, with no beam or target dependence. The number of secondary collisions in the nucleus increases significantly less rapidly with the number of projectile collisions than has been reported by a streamer chamber experiment. The properties of secondary collisions suggest that they arise from rescattering of recoil nucleons rather than intranuclear cascade of produced particles. Dispersions of multiplicity distributions at fixed impact parameter are in better agreement with a model of independent sources than with Koba-Nielsen-Olesen scaling.

3 data tables

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PION means all charged secondaries except identified protons.

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Pion multiplicity in nuclear collisions

Gazdzicki, M. ; Roehrich, D. ;
Z.Phys.C 65 (1995) 215-223, 1995.
Inspire Record 398172 DOI 10.17182/hepdata.14107

Data on the mean multiplicity ofπ- produced in minimum bias proton-proton, proton-neutron and proton-nucleus interactions as well as central nucleus-nucleus collisions at momenta of 1.4–400 GeV/c per nucleon have been compiled and studied. The results for neutron-neutron and nucleon-nucleon interactions were then constructed. The dependence of the mean pion multiplicity in proton-nucleus interactions and central collisions of identical nuclei are studied as a function of the collision energy and the nucleus mass number. The number of produced pions per participant nucleon in central collisions of identical nuclei is found to be independent of the number of participants at a fixed incident momentum per nucleon. The mean multiplicity of negatively charged hadrons per participant nucleon for central nucleus-nucleus collisions is lower by about 0.12 than the corresponding multiplicity for nucleon-nucleon interactions atpLAB≲15 A·GeV/c, whereas the result at 200 A·GeV/c is above the corresponding nucleon-nucleon multiplicity. This may indicate change of the collision dynamics at high energy.

13 data tables

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MEAN MULTIPLICITY OF N N COLLISIONS IS DEDUCED FROM PROTON-PROTON DATA.

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