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Investigation of the dynamics of hadron nucleus interactions at 40-GeV by using the features of neutral strange particles.

Akhobadze, K.G. ; Chikovani, L.D. ; Ioramashvili, E.Sh. ; et al.
Phys.Atom.Nucl. 61 (1998) 196-202, 1998.
Inspire Record 442181 DOI 10.17182/hepdata.17088

None

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Critical behaviour in Au fragmentation at 10.7-A-GeV.

The EMU-1 collaboration Adamovich, M.I. ; Aggarwal, M.M. ; Alexandrov, Y.A. ; et al.
Eur.Phys.J.A 1 (1998) 77-83, 1998.
Inspire Record 467240 DOI 10.17182/hepdata.43765

The complete charge distribution of products from Au nuclei fragmenting in nuclear emulsion at 10.7A GeV has been measured. Multiplicities of produced particles and particles associated with the targe

2 data tables
Table 1

No description provided.

Table 2

No description provided.


A-dependencies of neutral strange particle yields at 40-GeV/c anti-p nuclei collisions.

Grigalashvili, T. ; Chikovani, L. ; Ioramashvili, E. ; et al.
Eur.Phys.J.C 10 (1999) 265-270, 1999.
Inspire Record 468341 DOI 10.17182/hepdata.43412

The interactions of $\bar p$ with D(2), Li(7), C(12), S(32), Cu(64) and Pb(207) nuclei at $40 GeV/c$ were studied by RISC-streamer chamber spectrometer. The yields of $K^0$ mesons and $\Lambda$ and $\bar\Lambda$ hyperons as functions of the target nucleus mass numbers are investigated. The experimental results are compared with model predictions using $FRITIOF-7.02$ program package.

2 data tables
Table 1

No description provided.

Table 2

A-dependence of particle yields were fitted to the Y=const*A**power.


Fragmentation Spectra in $K^- p$ Interactions at 110-{GeV}/$c$

The Aachen-Berlin-CERN-Cracow-London-Vienna-Warsaw collaboration Gottgens, R. ; Sixel, P. ; Klein, R. ; et al.
Z.Phys.C 9 (1981) 21, 1981.
Inspire Record 156265 DOI 10.17182/hepdata.14213

The longitudinal momentum spectra of mesons produced in the projectile fragmentation region ofK−p interactions at 110 GeV/c, measured in a bubble chamber experiment, are compared to two fragmentation models related to hadron production by incident leptons. The models give a qualitative description of the data. However, it is found that the mesons having a valence quark in common with the projectile tend to have higher momenta than predicted.

1 data table
Table 1

No description provided.


Study of quasiexclusive neutral meson production in p N interactions at E(p) = 70-GeV in the deep fragmentation region.

The SPHINX collaboration Golovkin, S.V. ; Kozhevnikov, A.P. ; Kubarovsky, V.P. ; et al.
Z.Phys.A 359 (1997) 327-335, 1997.
Inspire Record 445405 DOI 10.17182/hepdata.40690

Quasiexclusive neutral meson production in pN-interactions is studied in experiments with the SPHINX facility operating in a proton beam from the IHEP accelerator (Ep=70 GeV). The cross sections and the parameters of the differential distributions for πo, ω, η and Ko production in the deep fragmentation region (xF > 0.79 ÷ 0.86) are presented. The results show that such proton quasiexclusive reactions with baryon exchange may be promising in searches for exotic mesons.

8 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

Data on the graph only.

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Production of Multi - Pion Systems With Large Longitudinal Momentum at the {CERN} {ISR}

Lockman, William S. ; Meyer, T. ; Rander, J. ; et al.
Phys.Rev.Lett. 41 (1978) 680-683, 1978.
Inspire Record 6695 DOI 10.17182/hepdata.20814

Inclusive cross sections are presented for 2π and 3π systems with large longitudinal x at the highest intersecting storage ring energies (s=53 GeV for 2π; s=53 and 62 GeV for 3π). The ratio π+π−π−π− rises sharply with increasing x similar to the ratio K+K−, as expected in a quark-model interpretation.

2 data tables
Table 1

The differential cross section is fitted by the equation : E*D3(SIG)/D3(P) = CONST*(1-XL)**POWER*EXP(-SLOPE*PT**2).

Table 2

The differential cross section is fitted by the equation : E*D3(SIG)/D3(P) = CONST*(1-XL)**POWER*EXP(-SLOPE*PT**2).


Measurements of charmed meson production in interactions between 350-GeV/c pi- particles and nuclei.

The BEATRICE collaboration Adamovich, M. ; Alexandrov, Y. ; Angelini, C. ; et al.
Nucl.Phys.B 495 (1997) 3-34, 1997.
Inspire Record 428243 DOI 10.17182/hepdata.47616

Charmed-meson production by 350 GeV/c π − particles incident on copper and tungsten targets has been studied in the WA92 experiment, performed at the CERN Ω′ spectrometer. Results obtained are reported and discussed. Reconstruction of decays from the set D 0 → K − π + D 0 → K − π − π + π + , D s + → φπ + and charge conjugates has yielded a sample of 7280 ± 108 charmed mesons, produced with χ F > 0, ( χ F ) = 0.18 and〈 p T 2 〉 = 1.86 ( GeV / c ) 2 . Assuming a relationship σ = σ 0 A α between the cross section, σ, per nucleus of mass A and the nucleonic cross section, σ 0 the α value found for the detected charmed particles is 0.95 ± 0.06 ± 0.03. Taking α = 1, the measured cross sections per nucleon for χ F > 0 production are 7.78 ± 0.14 ± 0.52 μ b for D 0 / D 0 , 3.28 ± 0.08 ± 0.29 μ b for D + /D − and 1.29 ± 0.16 ± 0.33 μ b for D s + /D s − . Differential cross sections with respect to χ F and p T 2 have been determined for the various types of charmed meson, and particle-antiparticle asymmetries have been analysed.

18 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

Nuclear dependence is fitted by SIG=CONST*A**POWER for CU and WT nuclei.

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Scaling properties of high mass symmetric hadron and pion pair production in proton - beryllium collisions

Jostlein, H. ; Engelmann, Roderich J. ; Fisk, R.J. ; et al.
Phys.Rev.Lett. 42 (1979) 146, 1979.
Inspire Record 132764 DOI 10.17182/hepdata.42603

We present measurements of the production symmetric high-mass hadron and pion pairs by protons of 200, 300, and 400 GeV, incident on a beryllium target. The two-particle invariant cross section for pion production can be described by the function E1E2d6σdp13dp23=(1.7×10−28)pt−8.4(1−xt)14 cm2/GeV4 (where pt is the mean pt of the two hadrons). Functions of the same form have been used in describing single-pion inclusive production. Equality of the exponents of pt in the two processes is observed, confirming the role of smearing contributions to single-hadron cross sections.

2 data tables
Table 1

E*D3(SIG)/D3(P) is fitted by CONST*(1-XT)**POWER*PT**POWER.

Table 2

E1*E2*D6(SIG)/D3(P1)/D3(P2) is fitted by CONST*(1-XT)**POWER*PT**POWER, where PT is (pt1 + pt2)/2.


Experimental information on the pion gluon distribution function

The E609 collaboration Bordner, A. ; Kuehn, C.E. ; Arenton, M. ; et al.
Z.Phys.C 72 (1996) 249-254, 1996.
Inspire Record 432187 DOI 10.17182/hepdata.14095

An experiment performed at Fermilab used double-arm calorimeter triggers to study di-jet production by 400 GeV protons and 200 GeVπ− mesons incident on liquid hydrogen. The observed ratio of positive to negative leading particles in the jets was compared forpp andπp production using a tree level parton scattering model. The results are moderately sensitive to the form of the pion gluon distribution function and yieldx g(x)⋍(1−x)2.75±0.40±0.75.

1 data table
Table 1

One parameter function is used for gluon distribution: X*G(X) = C*(1-x)**POWER.


PRODUCTION OF PHOTONS ASSOCIATED WITH THE PSI BY 217-GEV/C PI- MESONS

Kirk, T.B.W. ; Raja, R. ; Goodman, M. ; et al.
Phys.Rev.Lett. 42 (1979) 619-622, 1979.
Inspire Record 145303 DOI 10.17182/hepdata.20780

Dimuon production is studied in 217-GeV/c π−-hydrogen and π−-beryllium collisions with a lead-glass array to detect photons associated with the ψ. The ψ−γ mass spectrum shows a 2.6-standard-deviation excess of events above background at ∼3.5 GeV. This excess, if attributed to the decay χ(∼3.5)→ψγ, implies that 0.70±0.28 of the ψ's are produced via radiative decay of one of the χ states.

2 data tables
Table 1

E*D(SIG)/D(XL) is fitted by (1-X)**POWER.

Table 2

No description provided.