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rivet Analysis
Hadron Production in $e^+ e^-$ Annihilation From $\sqrt{s}=5$-{GeV} to 7.4-{GeV}

Edwards, C. ; Partridge, Richard ; Peck, C. ; et al.
SLAC-PUB-5160, 1990.
Inspire Record 294419 DOI 10.17182/hepdata.18758

None

4 data tables
Table 1

Data from Run 1. There is an additional overall systematic uncertainty of 5.2 pct.

Table 2

Data from Run 2. There is an additional overall systematic uncertainty of 5.2 pct.

Table 3

Average R value.

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Search for an H dibaryon

Alekseev, A.N. ; Berezin, V.M. ; Bogdanov, E.T. ; et al.
Sov.J.Nucl.Phys. 52 (1990) 1016-1018, 1990.
Inspire Record 310395 DOI 10.17182/hepdata.17311

None

1 data table
Table 1

The cross-section obtained in the paper is the model dependent estimation.


Measurement of the cross section for the anti-nu/e + p --> n + e+ reaction and the axial constant of beta decay in a new experiment in the reactor of the Rovno Nuclear Power Plant.

Kuvshinnikov, A.A. ; Mikaelyan, L.A. ; Nikolaev, S.V. ; et al.
JETP Lett. 54 (1991) 253-257, 1991.
Inspire Record 306219 DOI 10.17182/hepdata.17306

None

1 data table
Table 1

No description provided.


Polarization of cumulative protons in the reaction gamma A --> p X.

Avakyan, R.O. ; Avakian, E.O. ; Avdalyan, G.A. ; et al.
Sov.J.Nucl.Phys. 51 (1990) 999-1000, 1990.
Inspire Record 306076 DOI 10.17182/hepdata.17310

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Measurement of parity violation in the elastic scattering of polarized electrons from C-12

Souder, P.A. ; Holmes, R. ; Kim, D.H. ; et al.
Phys.Rev.Lett. 65 (1990) 694-697, 1990.
Inspire Record 303578 DOI 10.17182/hepdata.19917

We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from C12 nuclei. Our result is Aexpt=0.60±0.14±0.02 ppm, where the first error is statistical and the second is systematic. With a beam polarization of 0.37, we compute the isoscalar vector hadronic coupling constant γ̃ to be 0.136±0.032±0.009. The standard model predicts γ̃=0.155 at the tree level, in agreement with our data.

1 data table
Table 1

No description provided.


Total cross-section for p + p ---> p + p + pi0 near threshold measured with the Indiana cooler

Meyer, H.O. ; Ross, M.A. ; Pollock, R.E. ; et al.
Phys.Rev.Lett. 65 (1990) 2846-2849, 1990.
Inspire Record 305682 DOI 10.17182/hepdata.19936

The total cross section for the reaction pp→ppπ0 was measured at nine center-of-mass energies from 1.5 to 23 MeV above threshold. The experiment was carried out with the Indiana Cooler, a recently constructed storage ring. The experimental advantages of an electron-cooled proton beam were utilized. The data cover an energy range where only the lowest possible angular momentum state contributes in the exit channel. The measured energy dependence of the total cross section is not compatible with that predicted by models of s-wave pion production and rescattering.

1 data table
Table 1

No description provided.


Measurement of the tensor analyzing power for the C-12 (d, p) reaction at P(d) = 9.1-GeV/c and zero angle proton emission. (In Russian)

Ableev, V.G. ; Vizireva, L. ; Dzhemuchadze, S.V. ; et al.
Dubna JINR - 4(43)-90 (90,rec.Oct.) 5-9.C, 1990.
Inspire Record 304748 DOI 10.17182/hepdata.48496

None

1 data table
Table 1

Proton momentum in deuteron rest frame (ANTILAB).


First Measurement of the Lifetime of the Charmed Strange Baryon Xi($c$)0

The ACCMOR collaboration Barlag, S. ; Becker, H. ; Bohringer, T. ; et al.
Phys.Lett.B 236 (1990) 495-500, 1990.
Inspire Record 294681 DOI 10.17182/hepdata.49584

We have observed four unambiguous decays of the charmed strange baryon Ξ c o in the NA32 experiment at CERN. Charge- coupled devices and silicon microstrip detectors were used to reconstruct the decay mode Ξ c o → pK − K ∗ (892) o seen in events produced by the interaction of 230 GeV/ c negative poins and kaons on a copper target. We present the first measurement of the lifetime of the Ξ c o , together with a determination of its mass and production cross section. The resonant components of the Ξ c o decay are studied. We use our earlier measurement of the mass of the Ξ c + in the determination of the isospin mass splitting of the Ξ c states.

1 data table
Table 1

No description provided.


Photon-Gluon Fusion Analysis of Charm Photoproduction.

The Tagged Photon Spectrometer collaboration Anjos, J.C. ; Appel, J.A. ; Bean, A. ; et al.
Phys.Rev.Lett. 65 (1990) 2503-2506, 1990.
Inspire Record 306050 DOI 10.17182/hepdata.19964

Results on the photoproduction of 10 000 fully reconstructed charmed particles from the 108 recorded triggers of Fermilab experiment E691 have been analyzed in the photon-gluon-fusion model. We find that the total cross section, its rise with energy, and the pT2 and xF distributions can be explained by a high mass for the charm quark (mc=1.74−0.18+0.13 GeV/c2) and a soft-gluon distribution [G(x)∼(1-x)gn, where ng=7.1±2.2].

1 data table
Table 1

Data can be found in the record RED = 4080.


rivet Analysis
Pseudorapidity Distributions of Charged Particles Produced in anti-p p Interactions at s**(1/2) = 630-GeV and 1800-GeV

The CDF collaboration Abe, F. ; Amidei, D. ; Apollinari, G. ; et al.
Phys.Rev.D 41 (1990) 2330, 1989.
Inspire Record 283352 DOI 10.17182/hepdata.52936

We present measurements of the pseudorapidity (η) distribution of charged particles (dNchdη) produced within |η|≤3.5 in proton-antiproton collisions at s of 630 and 1800 GeV. We measure dNchdη at η=0 to be 3.18±0.06(stat)±0.10(syst) at 630 GeV, and 3.95±0.03 (stat)±0.13(syst) at 1800 GeV. Many systematic errors in the ratio of dNchdη at the two energies cancel, and we measure 1.26±0.01±0.04 for the ratio of dNchdη at 1800 GeV to that at 630 GeV within |η|≤3. Comparing to lower-energy data, we observe an increase faster than ln(s) in dNchdη at η=0.

4 data tables
Table 1

General rapidity densities.

Table 2

No description provided.

Table 3

Differential pseudorapidity distribution.. The numbers here at 1800 GeV have been taken from the HZTool routine hzf89201e provded by Arthur Moraes.

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