Strangeness in nuclear collisions

Gazdzicki, Marek ; Rohrich, Dieter ;
Z.Phys. C71 (1996) 55-64, 1996.
Inspire Record 420462 DOI 10.17182/hepdata.13638

Data on the mean multiplicity of strange hadrons produced in minimum bias proton--proton and central nucleus--nucleus collisions at momenta between 2.8 and 400 GeV/c per nucleon have been compiled. The multiplicities for nucleon--nucleon interactions were constructed. The ratios of strange particle multiplicity to participant nucleon as well as to pion multiplicity are larger for central nucleus--nucleus collisions than for nucleon--nucleon interactions at all studied energies. The data at AGS energies suggest that the latter ratio saturates with increasing masses of the colliding nuclei. The strangeness to pion multiplicity ratio observed in nucleon--nucleon interactions increases with collision energy in the whole energy range studied. A qualitatively different behaviour is observed for central nucleus--nucleus collisions: the ratio rapidly increases when going from Dubna to AGS energies and changes little between AGS and SPS energies. This change in the behaviour can be related to the increase in the entropy production observed in central nucleus-nucleus collisions at the same energy range. The results are interpreted within a statistical approach. They are consistent with the hypothesis that the Quark Gluon Plasma is created at SPS energies, the critical collision energy being between AGS and SPS energies.

0 data tables match query

Pion multiplicity in nuclear collisions

Gazdzicki, M. ; Roehrich, D. ;
Z.Phys. C65 (1995) 215-223, 1995.
Inspire Record 398172 DOI 10.17182/hepdata.14107
0 data tables match query

Inclusive $D^{*\pm}$ production in photon-photon collisions

The TPC/Two-Gamma collaboration Alston-Garnjost, M. ; Avery, R.E. ; Barker, A.R. ; et al.
Phys.Lett. B252 (1990) 499-504, 1990.
Inspire Record 299662 DOI 10.17182/hepdata.29510
0 data tables match query

Inclusive charm production in two photon collisions at LEP

The L3 collaboration Acciarri, M. ; Achard, P. ; Adriani, O. ; et al.
Phys.Lett. B453 (1999) 83-93, 1999.
Inspire Record 481163 DOI 10.17182/hepdata.49252
0 data tables match query

Inclusive production of charged hadrons in photon-photon collisions

The OPAL collaboration
Phys.Lett. B651 (2007) 92-101, 2007.
Inspire Record 734955 DOI 10.17182/hepdata.48554

The inclusive production of charged hadrons in the collisions of quasi-real photons e+e- -> e+e- +X has been measured using the OPAL detector at LEP. The data were taken at e+e- centre-of-mass energies from 183 to 209 GeV. The differential cross-sections as a function of the transverse momentum and the pseudorapidity of the hadrons are compared to theoretical calculations of up to next-to-leading order (NLO) in the strong coupling constant alpha{s}. The data are also compared to a measurement by the L3 Collaboration, in which a large deviation from the NLO predictions is observed.

0 data tables match query

Diffraction Dissociation in Proton Proton Collisions at {ISR} Energies

Armitage, J.C.M. ; Benz, P. ; Bobbink, G.J. ; et al.
Nucl.Phys. B194 (1982) 365-372, 1982.
Inspire Record 164126 DOI 10.17182/hepdata.7553
0 data tables match query

Charged particle multiplicities in nuclear collisions at 200-GeV/N

The NA35 collaboration Baechler, J. ; Bartke, J. ; Bialkowska, H. ; et al.
Z.Phys. C51 (1991) 157-162, 1991.
Inspire Record 320907 DOI 10.17182/hepdata.14983
0 data tables match query

Study of Electron - Positron Collisions at the Highest {PETRA} Energy

The Aachen-DESY-Annecy(LAPP)-MIT-NIKHEF-Beijing collaboration Barber, D.P. ; Becker, U. ; Benda, H. ; et al.
Phys.Lett. B85 (1979) 463-466, 1979.
Inspire Record 141976 DOI 10.17182/hepdata.27332
0 data tables match query

Large Transverse Momentum Photons from High-Energy Proton Proton Collisions

Darriulat, P. ; Dittmann, P. ; Eggert, K. ; et al.
Nucl.Phys. B110 (1976) 365, 1976.
Inspire Record 109343 DOI 10.17182/hepdata.35743
0 data tables match query

Charged Particle Multiplicity Distributions in p p Collisions at ISR Energies

The Aachen-CERN-Heidelberg-Munich collaboration Thome, W. ; Eggert, K. ; Giboni, K. ; et al.
Nucl.Phys. B129 (1977) 365, 1977.
Inspire Record 120863 DOI 10.17182/hepdata.55890
0 data tables match query

Production of $G(1590)$ in 300-{GeV} Central $\pi^- N$ Collisions

The Serpukhov-Brussels-Los Alamos-Annecy(LAPP)-Pisa collaboration Alde, D. ; Bellazzini, R. ; Binon, F.G. ; et al.
Phys.Lett. B201 (1988) 160, 1988.
Inspire Record 250393 DOI 10.17182/hepdata.6493
0 data tables match query

Dimuon production in proton - copper collisions at $\sqrt{s}$ = 38.8-GeV

Moreno, G. ; Brown, C.N. ; Cooper, W.E. ; et al.
Phys.Rev. D43 (1991) 2815-2836, 1991.
Inspire Record 302822 DOI 10.17182/hepdata.22831
0 data tables match query

A study of $\eta$ formation in photon-photon collisions at PEP

The TPC/Two Gamma collaboration Aihara, H. ; Alston-Garnjost, M. ; Armitage, J.C. ; et al.
Phys.Rev. D33 (1986) 844, 1986.
Inspire Record 217503 DOI 10.17182/hepdata.23508
0 data tables match query

Strangeness enhancement in central S + S collisions at 200-GeV/nucleon

The NA35 collaboration Baechler, J. ; Bartke, J. ; Bialkowska, H. ; et al.
Nucl.Phys. A525 (1991) 221C-226C, 1991.
Inspire Record 328899 DOI 10.17182/hepdata.36820
0 data tables match query

Inelastic Two Prong Events in 147-GeV/c pi- p Collisions.

Fong, D. ; Heller, M. ; Shapiro, A. ; et al.
Nucl.Phys. B104 (1976) 32-51, 1976.
Inspire Record 112609 DOI 10.17182/hepdata.36026
0 data tables match query

Measurement of the D*+- cross-section in two photon collisions at LEP

The ALEPH collaboration Buskulic, D. ; Casper, D. ; De Bonis, I. ; et al.
Phys.Lett. B355 (1995) 595-605, 1995.
Inspire Record 394752 DOI 10.17182/hepdata.47950
0 data tables match query

$\Lambda$ and $\Sigma^0$ pair production in two photon collisions at LEP

The L3 collaboration Achard, P. ; Adriani, O. ; Aguilar-Benitez, M. ; et al.
Phys.Lett. B536 (2002) 24-33, 2002.
Inspire Record 585621 DOI 10.17182/hepdata.48892

Strange baryon pair production in two-photon collisions is studied with the L3 detector at LEP. The analysis is based on data collected at e+e- centre-of-mass energies from 91 GeV to 208 GeV, corresponding to an integrated luminosity of 844 pb-1. The processes gamma gamma -> Lambda Anti-lambda and gamma gamma -> Sigma0 Anti-sigma0 are identified. Their cross sections as a function of the gamma gamma centre-of-mass energy are measured and results are compared to predictions of the quark-diquark model.

0 data tables match query

V0 production in p+A collisions at s**(1/2) = 41.6-GeV

The HERA-B collaboration Abt, I. ; Adams, M. ; Agari, M. ; et al.
Eur.Phys.J. C61 (2009) 207-221, 2009.
Inspire Record 810078 DOI 10.17182/hepdata.52478

Inclusive doubly differential cross sections d^2\sigma_{pA}/dx_Fdp_T^2 as a function of Feynman-x (x_F) and transverse momentum (p_T) for the production of K^0_s, Lambda^0 and anti-Lambda^0 in proton-nucleus interactions at 920 GeV are presented. The measurements were performed by HERA-B in the negative x_F range (-0.12<x_F<0.0) and for transverse momenta up to p_T= 1.6 GeV/c. Results for three target materials: carbon, titanium and tungsten are given. The ratios of production cross sections are presented and discussed. The Cronin effect is clearly observed for all three V^0 species. The atomic number dependence is parameterized as \sigma_{pA} = \sigma_{pN} \cdot A^\alpha where \sigma_{pN} is the proton-nucleon cross section. The measured values of \alpha are all near one. The results are compared with EPOS 1.67 and PYTHIA 6.3. EPOS reproduces the data to within \approx 20% except at very low transverse momentum.

0 data tables match query

Production of charmonium states in $\pi^{-}$ Be collisions at 515-GeV/c

The E672-E706 collaboration Koreshev, V. ; Jesik, R. ; Mendez, H. ; et al.
Phys.Rev.Lett. 77 (1996) 4294-4297, 1996.
Inspire Record 419626 DOI 10.17182/hepdata.42234
0 data tables match query

Diffractively produced charm final states in 800-GeV/c p p collisions

Wang, M.H.L.S. ; Berisso, M.C. ; Christian, D.C. ; et al.
Phys.Rev.Lett. 87 (2001) 082002, 2001.
Inspire Record 539652 DOI 10.17182/hepdata.42947
0 data tables match query

CHARGED AND NEUTRAL PARTICLE PRODUCTION FROM 400-GEV/C P P COLLISIONS

Kass, R.D. ; Ko, W. ; Lander, R.L. ; et al.
Phys.Rev. D20 (1979) 605-614, 1979.
Inspire Record 146628 DOI 10.17182/hepdata.24207

Charged- and neutral-particle production from 400-GeV/c pp collisions are measured simultaneously using the Fermilab 15-ft bubble chamber. The π0 and K0 cross sections are rising at Fermilab energies, while the Λ0 cross section remains fairly constant. Similarly, the average number of π0's and K0's increases as a function of the number of negative particles in an event, yet no such dependence is noted for the Λ0's. The ratio of average number of π0 to average number of π− per inelastic collisions is found to be constant at Serpukhov and Fermilab energies (40 to 400 GeV/c) and equal to 1.22±0.02. Cross sections for Σ0 and Σ¯0 production are measured and limits are found for η0 and ω0 production. Neutral- and charged-pion correlations are compared with five pion-production models.

0 data tables match query

INELASTIC P P COLLISIONS AT 400-GEV AND THE MULTIPERIPHERAL CLUSTER MODEL.

The ALMA ATA-LENINGRAD-MOSCOW-TASHKENT collaboration Boos, E.G. ; Borisenko, A.I. ; Kazanskaya, A.N. ; et al.
Yad.Fiz. 32 (1980) 1336-1341, 1980.
Inspire Record 159803 DOI 10.17182/hepdata.18006
0 data tables match query

Exclusive production of $p\bar{p}\pi^+\pi^-$ in photon-photon collisions

The TPC/Two Gamma collaboration Aihara, H. ; Alston-Garnjost, M. ; Avery, R.E. ; et al.
Phys.Rev. D40 (1989) 2772, 1989.
Inspire Record 279349 DOI 10.17182/hepdata.23017
0 data tables match query

Electroweak studies in e+ e- collisions: 12 < s**(1/2) < 46.78 GeV

The MARK J collaboration Adeva, B. ; Anderhub, H. ; Ansari, S. ; et al.
Phys.Rev. D38 (1988) 2665-2678, 1988.
Inspire Record 274887 DOI 10.17182/hepdata.23272
0 data tables match query

Measurement of the Dijet Cross-Section in 400-GeV p p Collisions

The E-609 collaboration Arenton, M.W. ; Ditzler, W.R. ; Fields, T.H. ; et al.
Phys.Rev.Lett. 53 (1984) 1988, 1984.
Inspire Record 15116 DOI 10.17182/hepdata.23566
0 data tables match query