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PION AND KAON MULTIPLICITIES IN HEAVY QUARK JETS FROM e+ e- ANNIHILATION AT 29-GeV

The TPC/Two Gamma collaboration Aihara, H. ; Alston-Garnjost, M. ; Avery, R.E. ; et al.

Phys.Lett.B 184 (1987) 299-304, 1987.

Inspire Record 235694 DOI 10.17182/hepdata.30210

The multiplicities per event of π ± and K ± are measured separately for e + e - annihilation into c c , b b , and light quark pairs at E cm=29 GeV. The K ± multiplicity is higher for heavy quark events than for light quark events. The π ± multiplicity and the π ± scaled differential cross section at low x = E beam/ E beam are found to be higher for b b events than for other events.

5 data tables

Table 1

Numerical values requested from authors. Data given separately for (b bbar), (c cbar) and light quark jets.

Table 2

Measured multiplicities for (b bbar) jets.

Table 3

Measured multiplicities for (c cbar) jets.

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Properties of $\pi^0$ Mesons Produced with Strange Particles in $\pi^- - p$ and $\pi^- - C$ Interactions

Belyakov, V.A. ; Wang, Yung-Ch'ang ; Viryasov, N.M. ; et al.

Sov.Phys.JETP 17 (1963) 991-995, 1963.

Inspire Record 1387688 DOI 10.17182/hepdata.70201

This investigation was performed with a 24-liter propane bubble chamber [i] and is a continu- ation of our previous work on the production of strange particles by 7-8-BeV 1r- mesons on hydrogen and carbon. [ 2 - 5 ] The properties of 1r 0 mesons inferred from the y quanta accom- panying A and K 0 production are given, and are compared with the properties of 1r+ and 7r- mesons emitted in A and K 0 production processes. The possibility of a resonance with radi- ative decay is noted.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

CHARGED PARTICLE MULTIPLICITIES IN PI-, K- AND ANTI-P INTERACTIONS WITH NUCLEI AT 40-GEV/C

The RISK collaboration Boos, E.G. ; Mosienko, A.M. ; Pokrovsky, N.A. ; et al.

Z.Phys.C 26 (1984) 43-52, 1984.

Inspire Record 214970 DOI 10.17182/hepdata.22350

Interactions of 40 GeV/c πp-,K− and$\bar p$ on Li, C, S, Cu, CsI and Pb were studied with the RISK-streamer chamber spectrometer. We present multiplicities of negatively charged particles, as well as of protons, and the correlations between them. The normalized mean multiplicity of negative particles,R−, depends on$\bar v$, the average number of inelastic collisions as$R^ -= (0.73 \pm 0.04) + (0.34 \pm 0.02)\bar v$. The dependence of the normalized dispersion of negative particles,D−/<N−>, on the number of protons favours independent collision models and contradicts the coherent tube picture. The excess of fast positive particles behaves asA0.4 and shows, for the heavier nuclei, a clear correlation with identified protons.

2 data tables

Table 1

AVERAGE MULTIPLICITIES OF ALL CHARGED PARTICLES.

Table 2

AVERAGE MULTIPLICITIES OF ALL NEGATIVELY CHARGED PARTICLES.

Light particle emission induced by stopped anti-protons in nuclei: Energy dissipation and neutron to proton ratio

Polster, D. ; Hilscher, D. ; Rossner, H. ; et al.

Phys.Rev.C 51 (1995) 1167-1180, 1995.

Inspire Record 404997 DOI 10.17182/hepdata.25959

Simultaneous measurements of inclusive energy spectra and multiplicities of π±, K±, n, p, d, and t following antiproton annihilation on nuclei over a wide energy range and in the case of neutrons down to the evaporative part of the spectra are reported. Thirteen targets in the mass range of A=12–238 were used in a target mass dependent investigation of the fast stage of the antiproton-nucleus interaction. The deduced transferred, preequilibrium and equilibrium excitation energies agree very well with the dynamical picture drawn by the intranuclear cascade model (INC). Ratios of directly emitted neutrons to protons have been determined to be about twice the N/Z ratio in the target nucleus nearly independently of its mass. These unexpected values for this new sensitive observable are not completely understood in the standard framework of INC. Possible effects of isospin and nucleon densities as well as further schemes beyond the INC are discussed.

1 data table

Table 1

No description provided.

CENTRAL INTERACTIONS OF Ne-22 NUCLEI WITH HEAVY PHOTOEMULSION NUCLEI AT P(0) = 4.1/A-GeV/c

The Alma Ata-Bucharest-Gatchina:Dubna-Dushanbe-Yerevan-Zernograd- Kosice-Cracow-Leningrad-Moscow-Tashkent-Tbilisi-Ulan Bator collaboration Andreeva, N.P. ; Anzon, Z.V. ; Ameeva, B.U. ; et al.

JINR-P1-89-213, 1989.

Inspire Record 281512 DOI 10.17182/hepdata.38837

None

5 data tables

Table 1

NUCLEUS IS NUCLEAR PHOTOEMULSION. EVENT WITH A TOTAL CHARGE OF ALL SPECTATOR FRAGMENTS OF A PROJECTILE = 0.

Table 2

NUCLEUS IS NUCLEAR PHOTOEMULSION. EVENT WITH A TOTAL CHARGET OF ALL SPECTATOR FRAGMENTS OF A PROJECTILE = 1.

Table 3

NUCLEUS IS NUCLEAR PHOTOEMULSION.

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Rescattering probed by the emission of slow target associated particles in high-energy heavy ion interactions

The EMU01 collaboration Adamovich, M.I ; Aggarwal, M.M ; Alexandrov, Y.A ; et al.

Phys.Lett.B 363 (1995) 230-236, 1995.

Inspire Record 406952 DOI 10.17182/hepdata.28438

In this letter the distribution of slow target associated particles emitted in Au + Emulsion interactions at 11.6 A GeV/ c is studied. The three models RQMD, FRITIOF and VENUS are used for comparisons and especially their treatment of rescattering is investigated.

6 data tables

Table 1

No description provided.

Table 2

PROJECTILE ASSOCIATED HE-FRAGMENTS.

Table 3

No description provided.

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Production of light particles after anti-proton nucleus annihilation and their interpretation with statistical models

Sudov, A.S. ; Botvina, A.S. ; Ilinov, A.S. ; et al.

Nucl.Phys.A 554 (1993) 223-245, 1993.

Inspire Record 364674 DOI 10.17182/hepdata.36605

Energy spectra of protons, deuterons and tritons from stopped-antiproton annihilation in Li, Si, Ca, Ni, Ge, Mo, Ho, Yb, Pb and Th have been measured with a Ge detector telescope. The shapes of these and of previously obtained spectra and the corresponding yields were analysed and compared with statistical calculations including intranuclear cascade, coalescence, pre-equilibrium processes, evaporation, multifragmentation and Fermi break-up. The relative importance and the A -dependence of the various processes are elucidated.

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.