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Elastic scattering of antiprotons by He-4 at 600-MeV/c.

Batusov, Yu.A. ; Bunyatov, S.A. ; Falomkin, I.V. ; et al.

Sov.J.Nucl.Phys. 52 (1990) 776-781, 1990.

Inspire Record 299081 DOI 10.17182/hepdata.47306

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

A Study of the D* content of jets at the CERN p anti-p collider

The UA1 collaboration Albajar, C. ; Albrow, M.G. ; Allkofer, O.C. ; et al.

Phys.Lett.B 244 (1990) 566-572, 1990.

Inspire Record 296474 DOI 10.17182/hepdata.49586

We have measured the rate of D ∗± meson production inside the jets produced in p p collisions at √ s = 630 GeV. For jets in the transverse energy range 15< E T <60 GeV we find a production rate of 0.10±0.04±0.03 D ∗± per jet, which is in good agreement with perturbative QCD calculations. In addition, we find that the D ∗± fragmentation distribution is strongly peaked towards low z consistent with gluon splitting as the dominant production mechanism.

1 data table

Table 1

No description provided.

Version 2

rivet Analysis
Measurement of XI(c) production in e+ e- annihilation at 10.5-GeV center-of-mass energy

The ARGUS collaboration Albrecht, H. ; Ehrlichmann, H. ; Harder, G. ; et al.

Phys.Lett.B 247 (1990) 121-126, 1990.

Inspire Record 296522 DOI 10.17182/hepdata.29678

Using the ARGUS detector at the e + e − storage ring DORIS II at DESY, we have observed production of the charmed-strange baryon Ξ c + and its neutral isospin partner, the Ξ c 0 . The Ξ c + was reconstructed in the final state Ξ − π + π + , while the Ξ c 0 was seen in decay to Ξ − π + and Ξ − π + π + π − . The average Ξ c fragmentation spectrum has been determined, as well as the production cross section times branching ratio for each decay mode. The charged and neutral masses were measured to be 2465.1 ± 3.6 ± 1.9 MeV/ c 2 and 2472.1 ± 2.7 ± 1.6 MeV/ c 2 respectively, corresponding to a mass-splitting, M ( Ξ c + ) − M ( Ξ c 0 ), of −7.0±4.5±2.2 MeV/ c 2 .

3 data tables

Table 1

Cross sections times branching ratios for $\Xi_c^0$ and $\Xi_c^+$ production at $E_{\mathrm{cms}} = 10.5$ GeV and $x_p > 0.5$.

Table 2

Cross sections times branching ratios for $\Xi_c^0$ and $\Xi_c^+$ production at $E_{\mathrm{cms}} = 10.5$ GeV and all $x_p$.

Table 3

Data requested from authors.

Inclusive jet cross-section at s**(1/2) = 1.8-TeV

The CDF collaboration Hessing, Timothy L. ;

Fermilab Batavia - FERMILAB-Conf-90-091 (90,rec.Aug.) 12 p, 1990.

Inspire Record 296745 DOI 10.17182/hepdata.43050

The inclusive jet cross section at $\sqrt{s}$ = 1.8 TeV has been measured at the Fermilab Tevatron Collider. This measurement spans approximately 7 orders of magnitude in cross section and contains jets ranging from 30 GeV to over 400 GeV in transverse energy ($E_t$). Comparisons have been made to QCD at both order $\alpha^2_s$ and $\alpha^3_s$.

3 data tables

Table 1

DATA FOR CONE SIZE=0.4.

Table 2

DATA FOR CONE SIZE=0.7.

Table 3

DATA FOR CONE SIZE=1.0.

A Luminosity Independent Measurement of the $\bar{p} p$ Total Cross-section at $\sqrt{s}=1$.8-tev

The E-710 collaboration Amos, Norman A. ; Avila, C. ; Baker, W.F. ; et al.

Phys.Lett.B 243 (1990) 158-164, 1990.

Inspire Record 27474 DOI 10.17182/hepdata.29696

We report a measurement of the p p total cross section at √ s =1.8 TeV using a luminosity-independent method. Our result is σ T =72.1±3.3 mb ; we also derive the total elastic cross section σ el =16.6±1.6 mb. A value is obtained for the total single diffraction cross section of 11.7±2.3 mb.

4 data tables

Table 1

No description provided.

Table 2

Assuming RHO = 0.145.

Table 3

No description provided.

More…

Determination of the QCD scale parameter Lambda (ms) with QCD cascade on the basis of the next-to-leading logarithmic approximation

The VENUS collaboration Abe, K. ; Amako, K. ; Arai, Y. ; et al.

Phys.Lett.B 240 (1990) 232-236, 1990.

Inspire Record 296684 DOI 10.17182/hepdata.29690

The relative production ratio of 3-jet events to the total number of hadronic events was studied in e + e − annihilations at centre-of-mass energies between 54 and 61.4 GeV. The QCD scale parameter has been determined to be Λ MS =254 −47 +55 ±56 MeV on the basis of a QCD cascade with the next-to-leading logarithmic approximation.

2 data tables

Table 1

Data are uncorrected for initial radiation, detector effects, and quark hadronization.

Table 2

LAMBDA-MSBAR determined from the 3-jet ratio.

Global Properties of Pion Production in the Reaction $\gamma \gamma \to 3 \pi^+ 3 \pi^-$

The CELLO collaboration Behrend, H.J. ; Criegee, L. ; Field, J.H. ; et al.

Phys.Lett.B 245 (1990) 298-304, 1990.

Inspire Record 296189 DOI 10.17182/hepdata.29695

We have studied the properties of pion production in the reaction γ →3 π + 3 π − in the energy range 1.6⩽ W γγ ⩽7.5 GeV with the CELLO detector at PETRA. We present the topological cross section both for Q 2 ≈0 (anti-tag) and Q 2 ≈0 (single-tag). The Q 2 dependence of the cross section is flatter than the GVDM prediction. The distribution of the production angle of the pions in the CMS peaks at small angles, indicating a peripheral process. In accordance with the VDM picture the p T distribution of the pions manifests an exponential fall-off. Like sign pion pairs were found to be Bose-Einstein correlated. We use this correlation to estimate the spatial dimensions of the interaction region.

7 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.