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Rapidity and transverse momentum distributions in 6.4-TeV S + Pb interactions from CERN EMU05 experiments. EMU-005 experiment

Iyono, A. ; Takahashi, Y. ; Gregory, J.C. ; et al.
Nucl.Phys.A 544 (1992) 455C-458C, 1992.
Inspire Record 343252 DOI 10.17182/hepdata.36672

Mixed transverse(P T ) momentum and rapidity distributions of charged particles produced in 200 GeV/AMU heavy ion collisions are obtained with Magnetic-Interferometric-Emulsion-Chamber ( MAGIC ) by CERN-EMU05 experiments. The P T spectra at different rapidity regions showed no anomalous enhancement of low P T components over a conventional, single exponential function with slope values ranging from 160 to 200 MeV/c.

1 data table
Table 1

EVENTS SELECTED FOR THE ANALYSIS ARE THOSE WITH CHARGED MULTIPLICITY MORE THAN 400 FOR CENTRAL S+PB COLLISIONS.


Determination of anti-proton neutron amplitude from elastic anti-p deuteron scattering at 600-MeV/c

Mahalanabis, J. ;
Z.Phys.A 342 (1992) 101-105, 1992.
Inspire Record 343348 DOI 10.17182/hepdata.16576

The elementary ¯p-neutron amplitude has been obtained from Glauber's model analysis of ¯p-d elastic scattering data at 600 MeV/c, taking into account theD-state component of the deuteron. The results are compared with the ¯p-nucleus analysis and the ¯NN potential model predictions.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Neutral pion production in the reactions O-16 + Al-27, Ni-58, Pb-208 at E(lab) = 95-MeV/nucleon

Moisan, C. ; de Takacsy, N. ; Barrette, J. ; et al.
Nucl.Phys.A 537 (1992) 667-691, 1992.
Inspire Record 337055 DOI 10.17182/hepdata.36690

The production of neutral pions has been studied in the 16 O+ 27 Al, 58 Ni, 208 Pb reactions at 95 MeV/nucleon. Inclusive pion differential distributions d σ d p t , d σ d T π , and d σ d Ω have been measured by detecting the two-pion decay γ-rays in a setup of 8 lead glass Cherenkov detector telescopes. The data are discussed in the framework of a moving thermal source model. It is shown that the shape of the pion energy spectra is better described if mean field effects on the primary pion-production cross section and pion reabsorption are included in the calculation.

6 data tables
Table 1

Axis error includes +- 10/10 contribution.

Table 2

SPECTRA WERE FITTED USING THE FORMULA D3(N)/D3(P)= CONST/(EXP(EKIN(P=3)/T)-1).

Table 3

Axis error includes +- 10/10 contribution.

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Further studies of the x (1910) meson

The IHEP-IISN-KEK-LANL-LAPP collaboration Alde, D. ; Binon, F.G. ; Boutemeur, M. ; et al.
Phys.Lett.B 276 (1992) 375-378, 1992.
Inspire Record 322740 DOI 10.17182/hepdata.48134

New data on the ν ′ ν system produced in the π − p charge exchange at 38 GeV c momentum confirm the existence of the narrow ν ′ ν resonance X(1910). The hypothesis of the X(1910) quantum numbers being a J PC = 1 −+ , forbidden for the q[ovbar|q] meson, is proposed to explain the extremely low limits obtained for X(1910) decays through π 0 π 0 , νν and K 0 s K 0 s channels and the flat t -dependence of the X(1910) production cross section.

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Charm Meson Production in 800-GeV/c Proton - Emulsion Interactions

The Fermilab E653 collaboration Kodama, K. ; Ushida, N. ; Mokhtarani, A. ; et al.
Phys.Lett.B 263 (1991) 573-578, 1991.
Inspire Record 30879 DOI 10.17182/hepdata.47110

We report results on D 0 and D + production in proton-emulsion interactions at s =38.7 GeV. A fit to the form (1−| x F |) n exp (−bp 2 T ) yields n=6.9 +1.9 −1.8 and b=0.84 +0.10 −0.08 (GeV/ c ) −2 . The total inclusive cross section, is assuming linear A dependence, is measured to be 38±3(stat.) ±13 (sys.) μ b for the D 0 and 38±9±14 μ b for the D + . A comparison of these results with previous measurements indicates that nuclear effects do not strongly influence charm production. The predictions of QCD are in good agreement with our data.

3 data tables
Table 1

The differential cross section is fitted by the equation : D2(SIG)/D(XL)/D(PT**2) = CONST*(1-XL)**POWER*EXP(-SLOPE*PT**2).

Table 2

The differential cross section is fitted by the equation : D2(SIG)/D(XL)/D(PT**2) = CONST*(1-XL)**POWER*EXP(-SLOPE*PT**2).

Table 3

Linear A-dependence. Different modes of the charm mesons detection were used (see text for detail).


Strange particle production in sulphur - tungsten interactions at 200-GeV/c per nucleon

The WA85 collaboration Kinson, J.B. ; Abatzis, S. ; Antinori, F. ; et al.
Nucl.Phys.A 544 (1992) 321-334, 1992.
Inspire Record 321220 DOI 10.17182/hepdata.36664

Multi-strange baryon and anti-baryon production is expected to be a useful probe in the search for Quark-Gluon Plasma formation. We present the transverse mass distributions of negative particles, K o s, Λs, Λ s, and Ξ − s produced in sulphurtungsten interactions at 200 GeV/c per nucleon and give the corrected ratios Λ Λ, Ξ − Λ and Ξ − /Λ . We note that our ratio Ξ − / Λ appears large in comparison to that from p p interactions.

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Hadroproduction of D anti-D pairs in the interaction of 350-GeV/c pi- mesons with nuclei

The WA75 collaboration Aoki, S. ; Baroni, G. ; Bisi, V. ; et al.
Prog.Theor.Phys. 87 (1992) 1315-1322, 1992.
Inspire Record 322545 DOI 10.17182/hepdata.48517

Results are presented on the production characteristics of charmed particles obtained from the WA75 emulsion hybrid experiment. The events, selected by the presence of a muon with a high momentum transverse to the beam direction, were located and analysed in nuclear emulsions. Inclusive and correlation properties are systematically compared with the lowest-order QCD calculations for DD hadroproduction. Results concerning the correlation properties indicate some contribution from next-to-leading order [O(α_S^3)] subprocesses.

5 data tables
Table 1

459 DECAYS: 119 D0, 119 DBAR0, 115 D+, 106 D-.

Table 2

177 PAIRS: 38 D0 DBAR0, 46 D0 D-, 45 D+ DBAR0, 48 D+ D-.

Table 3

120 PAIRS: 38 D0 DBAR0, 31 D0 D-, 32 D+ DBAR0, 19 D+ D-.

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pi- meson production in the interaction of deuterons at 1-GeV per nucleon with carbon and beryllium extended targets

Viryasov, N.M. ; Gulkanian, G.R. ; Kakoyan, V.G. ; et al.
JINR-P1-91-455, 1991.
Inspire Record 322742 DOI 10.17182/hepdata.38652

None

6 data tables
Table 1

Axis error includes +- 0.0/0.0 contribution (?////).

Table 2

No description provided.

Table 3

No description provided.

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Measurement of rho, the ratio of the real to imaginary part of the anti-p p forward elastic scattering amplitude, at S**(1/2) = 1.8-TeV

The E710 collaboration Amos, Norman A. ; Avila, C. ; Baker, W.F. ; et al.
Phys.Rev.Lett. 68 (1992) 2433-2436, 1992.
Inspire Record 320369 DOI 10.17182/hepdata.42565

We have measured ρ, the ratio of the real to the imaginary part of the p¯p forward elastic-scattering amplitude, at √s =1.8 TeV. Our result, ρ=0.140±0.069, is compared with extrapolations from lower-energy data based on dispersion relations, and with the UA4 value at √s =546 GeV.

2 data tables
Table 1

Results of least square's fit to the distribution.

Table 2

Total cross section from fit to data.


The Temperature of negative pions in light ions collisions with carbon and tantalum nuclei at 4.2-A/GeV/c

Backovic, S. ; Salihagic, D. ; Simic, L. ; et al.
JINR-E1-91-376, 1991.
Inspire Record 322978 DOI 10.17182/hepdata.39403

None

1 data table
Table 1

THE SLOPE IS DETERMINED FROM THE FIT OF THE INVARIANT SPECTRUM (1/N)* (1/(2*3.14*PT))*D(N)/D(PT) BY A FORMULA MT*SUM(N=1,...) K1(N*SLOPE*MT), WHERE K1 IS MACDONALD FUNCTION.