Adelman, J.
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Anti-Baryon Production in the Central Region at the {ISR}

The Axial Field Spectrometer collaboration Akesson, T. ; Albrow, M.G. ; Almehed, S. ; et al.
Nucl.Phys.B 246 (1984) 1-11, 1984.
Inspire Record 199804 DOI 10.17182/hepdata.33869

Using annihilation in a calorimeter as a trigger on antiprotons, we have measured the relative production cross sections of p , Λ and Ξ at y∼0 in the transverse momentum range 1 to 2 GeV/ c in pp collisions at √ s =63 GeV. We investigate correlations between the antibaryons and associated produced particles, and find evidence for local baryon number conservation.

1 data table
Table 1

No description provided.


An Investigation of the Emc Effect Using Anti-neutrinos Interactions in Deuterium and Neon

The WA25 & WA59 collaborations Cooper-Sarkar, Amanda M. ; Derkaoui, J. ; Faccini-Turluer, M.L. ; et al.
Phys.Lett.B 141 (1984) 133-139, 1984.
Inspire Record 200773 DOI 10.17182/hepdata.30546

Antineutrino interactions in BEBC are compared to look for differences between the differential cross sections per nucleon in neon and in deuterium. The identical geometries, beam spectra and muon identification criteria and acceptances allow comparison with very small systematic errors. The results are compared in detail with μ and e scattering data from EMC and SLAC. We find no rise in the ratio d σ/ d x ( ν Ne )/σ/ d x ( ν D 2 ) at low x , independent of Q 2 up to Q 2 ∼ 14 GeV 2 .

1 data table
Table 1

VALUES OF Q**2 IN THIS TABLE ARE :- 1.07,2.59,4.33,6.14,7.67,8.28,6.35 (FOR ALL Q**2) AND :-,7.9,9.5,11.5,13.2,13.9,11.6 (FOR Q**2 > 4.5 ).


rivet Analysis
phi MESON PRODUCTION IN e+ e- ANNIHILATIONS AT 29-GeV

The TPC/Two Gamma collaboration Aihara, H. ; Alston-Garnjost, M. ; Badtke, D.H. ; et al.
Phys.Rev.Lett. 52 (1984) 2201, 1984.
Inspire Record 200105 DOI 10.17182/hepdata.20445

Production of φ mesons in e+e− annihilation at a center-of-mass energy of 29 GeV has been observed with the time-projection chamber detector at the PEP storage ring. The φ production rate has been measured in the energy range 0.075

3 data tables
Table 1

No description provided.

Table 2

EXTRAPOLAATION TO ALL X USES LUND MONTE CARLO PREDICTIONS.

Table 3

ERRORS ARE BOTH STATISTICAL AND SYSTEMATIC. PT IS MEASURED RELATIVE TO THE EVENT THRUST AXIS, AND IS FOUND TO HAVE A MEAN VALUE OF 1.0 +- 0.4 GEV.


Search for a Threshold Enhancement in the $\gamma (p) \to$ Charmed Baryon + Charmed Meson Cross-section

The SLAC Hybrid Facility Photon collaboration Abe, K. ; Bacon, T.C. ; Bingham, H.H. ; et al.
Phys.Rev.D 30 (1984) 694, 1984.
Inspire Record 200010 DOI 10.17182/hepdata.23592

Results of a search for a predicted enhancement of several microbarns in the charm-photoproduction cross section just above threshold are reported. No charm decays were detected, from which an upper limit to the charm cross section of 94 nb (90% C.L.) at Eγ≃10 GeV was obtained. Upper limits in the range 270 to 450 nb were also obtained for the peak cross sections for threshold enhancements in γp→D−Σc++ and similar channels.

2 data tables
Table 1

UPPER LIMIT TO AVERAGE CHARM CROSS SECTION.

Table 2

UPPER LIMITS TO INDIVIDUAL CHANNELS.


Study of the A-dependence of Inclusive $p$, $\bar{p}$, $\Lambda$ and $\bar{\Lambda}$ Production in $\pi^\pm$ Nucleus Interactions at 30-{GeV}/$c$

The CERN-Lisbon-Neuchatel-Paris-Warsaw collaboration Abreu, M.G. ; Armstrong, T. ; Baubillier, M. ; et al.
Z.Phys.C 25 (1984) 115, 1984.
Inspire Record 200776 DOI 10.17182/hepdata.16301

We present the first results on the production of fast (p>10 GeV/c)p,\(\bar p\), Λ and\(\bar \Lambda \) from π± hydrogen and nucleus interactions at 30 GeV/c using the CERN Ω′ spectrometer. We have used five nuclear targets (C, Al, Cu, Sn, Pb) to study theA-dependence of the inclusive particle distributions in the region 0.3

1 data table
Table 1

No description provided.


PROMPT ELECTRON PRODUCTION IN e+ e- ANNIHILATIONS AT 29-GeV

The TPC/Two Gamma collaboration Aihara, H. ; Alston-Garnjost, M. ; Badtke, D.H. ; et al.
Z.Phys.C 27 (1985) 39, 1985.
Inspire Record 200040 DOI 10.17182/hepdata.1895

We have measured the inclusive prompt electron cross section over a wide momentum range (P>0.5 GeV/c) with the PEP-4 TPC detector. The semielectronic branching fractions of thec andb quarks are (9.1±0.9 (stat.)±1.3 (syst.))% and (11.0±1.8±1.0)%, respectively. Theb quark fragmentation function peaks at highz with 〈zb〉=0.74±0.05±0.03. The axial couplings to the neutral current areac=2.3±1.4±1.0 for thec quark andab=−2.0±1.9±0.5 for theb quark.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


HADRON PRODUCTION IN 200-GeV mu - COPPER AND mu - CARBON DEEP INELASTIC INTERACTIONS

The European Muon collaboration Arvidson, A. ; Aubert, J.J. ; Bassompierre, G. ; et al.
Nucl.Phys.B 246 (1984) 381-407, 1984.
Inspire Record 200802 DOI 10.17182/hepdata.33858

The measurements of the z and p T 2 distribution of hadrons produced in the interactions of 200 GeV muons with copper and carbon nuclei are shown in different x Bj and virtual photon energy intervals. Effects of the jet scattering are seen at the lowest virtual photon energies while for energies above 70 GeV there is no evidence of these effects. Comparison with a theoretical model indicates that at high jet energies the parton fragmentation distance is greater than the nuclear radius and that the parton absorption cross section is less than 10 mb.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Measurement of Exclusive $\eta^\prime$ Production in $\gamma \gamma$ Reactions

The PLUTO collaboration Berger, Christoph ; Deuter, A. ; Genzel, H. ; et al.
Phys.Lett.B 142 (1984) 125-129, 1984.
Inspire Record 201708 DOI 10.17182/hepdata.30533

We observe γγ → η′ production in the reaction e + e − → e + e − π + π − γ. We measure the product γ γγ ( η ′) B ( η ′ → ϱ 0 γ ) to be 1.14 ± 0.08 ± 0.11 keV. A first measurement of the γγ → η′ transition form factor is made for Q 2 up to 1 GeV 2 .

1 data table
Table 1

No description provided.


Measurement of the Photon Structure Function F2 (x, Q**2)

The PLUTO collaboration Berger, Christoph ; Deuter, A. ; Genzel, H. ; et al.
Phys.Lett.B 142 (1984) 111-118, 1984.
Inspire Record 201376 DOI 10.17182/hepdata.30545

None

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Hyperon Production in $e^+ e^-$ Interactions in the $\Upsilon$ Region

The CLEO collaboration Alam, M.S. ; Csorna, S.E. ; Garren, L. ; et al.
Phys.Rev.Lett. 53 (1984) 24, 1984.
Inspire Record 200712 DOI 10.17182/hepdata.20410

We report measurements from the CLEO detector of the rate of Ξ and Λ production in e+e− interactions in the upsilon region. Hyperon production from the decay of the ϒ(1s) is compared with continuum e+e− data. The ratio of the production rates of Λ (and Λ―) to K0 (and K―0) on the ϒ(1s) is 0.21 ± 0.03, much larger than in the continuum, 0.07 ± 0.01. The ratios of the production rates of the Ξ and Λ are comparable, 0.10±0.02 [ϒ(1S)] and 0.07 ± 0.02 (continuum). We discuss some implications of the data for gluon and quark fragmentation models.

2 data tables
Table 1

CONTINUUM IS ECM 10.38 TO 10.64 GEV.

Table 2

No description provided.