Production of V0 pairs in the hyperon experiment WA89

The WA89 collaboration Adamovich, M.I. ; Alexandrov, Yu.A. ; Baranov, S.P. ; et al.
Eur.Phys.J.C 52 (2007) 857-874, 2007.
Inspire Record 772833 DOI 10.17182/hepdata.11375

We present a comprehensive study of the inclusive production of V 0 V 0 pairs (V 0 =Lambda, Lambda-bar or K S ) by Sigma - and pi - of 340 GeV/ c momentum and neutrons of 260 GeV/ c mean momentum in copper and carbon targets. In particular, the de pendence of the x F spectra on the combination of beam-particle and produced V 0 V 0 pair is investigated and compared to predictions obtained from PYTHIA and QSGM calculations. The data and these predictions differ in many details, the agreement can at b est be termed as qualitative. A signal from decays of the tensor meson f? 2 (1525) was observed in the K S K S mass distribution and inclusive production cross sections were measured. No signal was found from the double-strange H-dibaryon decaying to Lamb daLambda.

98 data tables

V0 V0 cross section for N on CU target.

V0 V0 cross section for N on C target.

V0 V0 cross section for PI- on CU target.

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V0, anti-Xi+ and Omega- inclusive production cross-sections measured in hyperon experiment WA89 at CERN

The WA89 collaboration Adamovich, M.I. ; Aleksandrov, Yu.A. ; Baranov, S.P. ; et al.
Eur.Phys.J.C 26 (2003) 357-370, 2003.
Inspire Record 614087 DOI 10.17182/hepdata.43217

We report on a measurement of the inclusive cross sections of $\Lambda$ , $\overline\Lambda$ , K 0

28 data tables

Total inclusive hyperon production cross sections for the SIGMA- beam on the Copper target.

Total inclusive hyperon production cross sections for the SIGMA- beam on the Carbon target.

Total inclusive hyperon production cross sections per nucleon for the SIGMA- beam, and the exponent in the cross section parametrization of the form A**POWER.

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A study of Sigma+-, Sigma*+- and anti-Sigma(1385)- production in the hyperon beam experiment WA89 at CERN

The WA89 collaboration Adamovich, M.I. ; Aleksandrov, Yu.A. ; Baranov, S.P. ; et al.
Eur.Phys.J.C 22 (2001) 255-267, 2001.
Inspire Record 570717 DOI 10.17182/hepdata.43263

None

26 data tables

Total inclusive production cross sections for the SIGMA- beam on the Coppertarget.

Total inclusive production cross sections for the SIGMA- beam on the Carbontarget.

Total inclusive production cross sections per nucleon for the SIGMA- beam, and the exponent in the cross section parametrization of the form A**POWER.

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A measurement of K*+- production in the hyperon beam experiment at CERN

The WA89 collaboration Adamovich, M.I. ; Aleksandrov, Yu.A. ; Baranov, S.P. ; et al.
Eur.Phys.J.C 22 (2001) 47-54, 2001.
Inspire Record 569120 DOI 10.17182/hepdata.43223

We report on a measurement of the differential cross sections of inclusive$K^{\pm}_{890}$production in$\sigma^-, pi^-$and ne

8 data tables

The production cross sections for K*+- per nucleus and per nucleon for the SIGMA- beam.

The production cross sections for K*+- per nucleus and per nucleon for the PI- beam.

The production cross sections for K*+- per nucleus and per nucleon for the NEUTRON- beam.

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Determination of the total c anti-c production cross section in 340-GeV/c Sigma- nucleus interactions.

The WA89 collaboration Adamovich, M.I. ; Alexandrov, Yu.A. ; Barberis, D. ; et al.
Eur.Phys.J.C 13 (2000) 247-254, 2000.
Inspire Record 506075 DOI 10.17182/hepdata.43334

The production of charmed particles by Sigma- of 340 Gev/c momentum was studied in the hyperon beam experiment WA89 at the CERN-SPS, using the Omega-spectrometer. In two data-taking periods in 1993 and 1994 an integrated luminosity of 1600 microb^-1 on copper and carbon targets was recorded. From the reconstruction of 930 +- 90 charm particle decays in 10 decay channels production cross sections for D, antiD, Ds and Lambdac were determined in the region xF>0. Assuming an A^1 dependence of the cross section on the nucleon number, we calculate a total ccbar production cross section of sigma(x_F > 0) = 5.3+- 0.4(stat)+-1.0(syst)+1.0(Xi_c) microb per nucleon. The last term is an upper limit on the unknown contribution from charmed-strange baryon production.

6 data tables

Fits to the DSIG/DXL and DSIG/DPT**2 distributions in the range XL > 0. Theerrors shown are statistical only.. The fits are of the following form:. DSIG/DXL : Const*(1-X)**N. DSIG/DPT**2 : Const*EXP(-B*PT**2).

The production cross sections for anti-charmed and charmed hadrons in the range XL > 0. The Errors are statistical only.

The total CQUARK+CQUARKBAR cross section in the range XL > obtained as the weighted average of the sum of all the measured contributions to the charmed andanti-charmed hadron production in the previous table. second systematic (DSYS) error is due to the uncertainty in the contribution of XI/C production to the cross section.

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Production of Xi* resonances in Sigma- induced reactions at 345-GeV/c

The WA89 collaboration Adamovich, M.I. ; Alexandrov, Yu.A. ; Baranov, S.P. ; et al.
Eur.Phys.J.C 11 (1999) 271-278, 1999.
Inspire Record 503785 DOI 10.17182/hepdata.43497

We report on a measurement of the differential and total cross sections of inclusive production of Xi resonances in Sigma - nucleus collisions at 345 GeV/c.

5 data tables

Feynman X distribution for producton XI(1530)0 on copper and carbon. The quoted errors are statistical.

PT**2 distribution for XI(1530) producton on copper and carbon. The uoted errors are statistical.

Feynman X distribution (times BR) per nucleon for XI(1820) and XI(1950) production. The quoted errors are statistical.

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Xi- production by Sigma-, pi- and neutrons in the hyperon beam experiment at CERN.

The WA89 collaboration Adamovich, M.I. ; Aleksandrov, Yu.A. ; Barberis, D. ; et al.
Z.Phys.C 76 (1997) 35-44, 1997.
Inspire Record 448181 DOI 10.17182/hepdata.47352

Inclusive cross sections for Ξ- hyperon production in high-energy Σ-, π- and neutron induced interactions were measured by the experiment WA89 at CERN. Secondary Σ- and π- beams with average momenta of 345 GeV/c and a neutron beam of 260 GeV/c were produced by primary protons of 450 GeV/c from the CERN SPS. The influence of the target mass on the Ξ- cross section is explored by comparing reactions on copper and carbon nuclei. Both single and double differential cross sections are presented as a function of the transverse momentum and the Feynman variable xF. A strong leading effect for Σ- produced by Σ- is observed.

9 data tables

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