Investigation of the breakup of a target nucleus in nucleus-nucleus collisions at an incident momentum of 4.2 GeV/c per nucleon

Bondarenko, A.I. ; Bondarenko, R.A. ; Kladnitskaya, E.N. ;
Phys.Atom.Nucl. 60 (1997) 1833-1842, 1997.
Inspire Record 1392946 DOI 10.17182/hepdata.17124

None

6 data tables

No description provided.

No description provided.

No description provided.

More…

Charged particle production in S S collisions at 200-GeV/c per nucleon

The WA94 collaboration Andrighetto, A. ; Antinori, F. ; Bayes, A.C. ; et al.
Phys.Lett.B 412 (1997) 148-154, 1997.
Inspire Record 460283 DOI 10.17182/hepdata.28242

Charged particle production in central S-S collisions at 200 GeV/ c per nucleon has been studied by the WA94 experiment at the CERN-SPS. Particle identification has been provided by the Omega RICH, while a silicon telescope in the Omega spectrometer and an array of MultiWire Proportional Chambers have been used to trace particles through the RICH detector. Production ratios and transverse mass spectra for π ± , K ± and p( p ) at central rapidity and p T > 1.3 GeV/ c are presented.

3 data tables

Distributions are fitted with (1/MT**1.5)*DSIG/DMT = CONST*EXP(-MT/SLOPE).

1.54 GeV ratio is calculated from the fit to the MT distribution.

1.54 GeV ratio is calculated from the fit to the MT distribution.


Classical tests for statistical evaporation at 680 MeV Ar-40 + natural Ag

Gelderloos, C.J. ; Alexander, John M. ; Boger, J. ; et al.
Phys.Rev.C 54 (1996) 3056-3061, 1996.
Inspire Record 433950 DOI 10.17182/hepdata.25739

Measurements of the partial linear momentum transfer and production cross sections for light charged particles are reported for the reaction 680 MeV Ar40+natAg. From examination of light charged particle invariant cross section maps and comparison of experimental angular distributions and energy spectra to a reaction kinematics simulation, an average value of 85% linear momentum transfer is deduced, with a spin range of (0–75)ħ. Integration over energy and angle yields single and coincident light charged particle production cross sections. © 1996 The American Physical Society.

1 data table

No description provided.


Strangelet search and light nucleus production in relativistic Si + Pt and Au + Pt collisions

The E886 collaboration Rusek, A. ; Bassalleck, B. ; Berdoz, A. ; et al.
Phys.Rev.C 54 (1996) R15-R19, 1996.
Inspire Record 429741 DOI 10.17182/hepdata.25801

A strangelet search in Si+Pt and Au+Pt collisions at alternating-gradient synchrotron (AGS) energies, using a focusing spectrometer, sensitive to mass per charge of 3-14 GeV/c2 was conducted during the 1992 and 1993 heavy ion runs at the AGS. The null results thereof are presented as upper limits on the invariant production cross section, in the range of 10−5-10−4 mb c3/GeV2, and model dependent sensitivity limits in the range of 10−7-10−5 per collision. Measurements of the production cross sections of several nonstrange nuclear systems, from p to Be7 and Li8, the background of the strangelet search, are also presented.

1 data table

No description provided.


CORRELATIONS OVER MULTIPLICITY BETWEEN NEGATIVE PIONS AND PROTONS: PARTICIPANTS IN C Ta INTERACTIONS AT 4.2-GeV/c PER NUCLEON MOMENTUM

Backovic, S. ; Boldea, V. ; Grishin, V.G. ; et al.
Sov.J.Nucl.Phys. 50 (1989) 1001-1005, 1989.
Inspire Record 269366 DOI 10.17182/hepdata.38833

None

5 data tables

No description provided.

No description provided.

No description provided.

More…

Production of pi+-, K+-, p, and anti-p in relativistic Au + Pt, Si + Pt, and p + Pt collisions

The E886 collaboration Diebold, G.E. ; Bassalleck, B. ; Burger, T. ; et al.
Phys.Rev.C 48 (1993) 2984-2994, 1993.
Inspire Record 364483 DOI 10.17182/hepdata.26015

During the recent commissioning of Au beams at the Brookhaven Alternating Gradient Synchrotron facility, experiment 886 measured production cross sections for π±, K±, p, and p¯ in minimum bias Au+Pt collisions at 11.5A GeV/c. Invariant differential cross sections, Ed3σ/dp3, were measured at several rigidities (p/Z≤1.8 GeV/c) using a 5.7° (fixed-angle) focusing spectrometer. For comparison, particle production was measured in minimum bias Si+Pt collisions at 14.6A GeV/c using the same apparatus and in p+Pt collisions at 12.9 GeV/c using a similar spectrometer at KEK. When normalized to projectile mass, Aproj, the measured π± and K± cross sections are nearly equal for the p+Pt and Si+Pt reactions. In contrast to this behavior, the π− cross section measured in Au+Pt shows a significant excess beyond Aproj scaling of the p+Pt measurement. This enhancement suggests collective phenomena contribute significantly to π− production in the larger Au+Pt colliding system. For the Au+Pt reaction, the π+ and K+ yields also exceed Aproj scaling of p+Pt collisions. However, little significance can be attributed to these excesses due to larger experimental uncertainties for the positive rigidity Au beam measurements. For antiprotons, the Si+Pt and Au+Pt cross sections fall well below Aproj scaling of the p+Pt yields indicating a substantial fraction of the nuclear projectile is ineffective for p¯ production. Comparing with p+Pt multiplicities, the Si+Pt and Au+Pt antiproton yields agree with that expected solely from ‘‘first’’ nucleon-nucleon collisions (i.e., collisions between previously unstruck nucleons). In light of expected p¯ annihilation in the colliding system, such projectile independence is unexpected without additional (projectile dependent) sources of p¯ production. In this case, the data indicate an approximate balance exists between absorption and additional sources of antiprotons. This balance is remarkable given the wide range of projectile mass spanned by these measurements.

13 data tables

No description provided.

No description provided.

No description provided.

More…

Intranuclear cascade percolation approach for protons and light fragments production in neon niobium reactions at 400-MeV and 800-MeV per nucleon

Montarou, G. ; Marroncle, J. ; Alard, J.P. ; et al.
Phys.Rev.C 47 (1993) 2764-2781, 1993.
Inspire Record 362233 DOI 10.17182/hepdata.26046

The results of intranuclear cascade calculations (ideal gas with two-body collisions and no mean field), complemented by a simple percolation procedure, are compared with experimental data on protons and light nuclear fragments (d, t, He3, and He4) measured in 400 and 800 MeV/nucleon Ne+Nb collisions using a large solid angle detector. The model reproduces quite well global experimental observables like nuclear fragment multiplicity distributions or production cross sections, and nuclear fragment to proton ratios. For rapidity distributions the best agreement occurs for peripheral reactions. Transverse momentum analysis confirms once again that the cascade, although being a microscopic approach, gives too small a collective flow, the best agreement being reached for Z=2 nuclear fragments. Nevertheless these comparisons are encouraging for further improvements of the model. Moreover, such an approach is easy to extend to any other models that could calculate the nucleon phase space distribution after the compression stage of the reaction, when light nuclear fragments emitted at large angles are constructed from percolation.

2 data tables

No description provided.

No description provided.


Measurement of kaons in the HELIOS experiment

The HELIOS collaboration van Hecke, Hubert ;
Nucl.Phys.A 525 (1991) 227C-230C, 1991.
Inspire Record 301896 DOI 10.17182/hepdata.36791

None

5 data tables

No description provided.

No description provided.

No description provided.

More…

INCLUSIVE AND MULTIPLE CHARACTERISTICS OF CUMULATIVE PROTONS IN NUCLEUS-NUCLEUS INTERACTIONS AT 4.2-GeV/c PER NUCLEON

Gulkanian, G.R. ; Ravinovich, I.M. ; Cheplakov, A.P. ;
Sov.J.Nucl.Phys. 50 (1989) 259, 1989.
Inspire Record 267866 DOI 10.17182/hepdata.9447

None

11 data tables

No description provided.

No description provided.

No description provided.

More…

No description provided.

No description provided.

No description provided.

More…