Gomez, Gervasio
nucl-ex
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Precision measurement of the proton spin structure function g1(p).

The E143 collaboration Abe, K. ; Akagi, T. ; Anthony, P.L. ; et al.
Phys.Rev.Lett. 74 (1995) 346-350, 1995.
Inspire Record 375737 DOI 10.17182/hepdata.19665

We have measured the ratio g1pF1p over the range 0.029<x<0.8 and 1.3<Q2<10 (GeV/c)2 using deep-inelastic scattering of polarized electrons from polarized ammonia. An evaluation of the integral ∫01g1p(x, Q2)dx at fixed Q2=3 (GeV/c)2 yields 0.127±0.004(stat)±0.010(syst), in agreement with previous experiments, but well below the Ellis-Jaffe sum rule prediction of 0.160±0.006. In the quark-parton model, this implies Δq=0.27±0.10.

2 data tables
Table 1

No description provided.

Table 2

Values of G1 computed assuming G1/F1 is independent of Q**2 and using a fixed Q**2 of 3 GeV**2.


Properties of $J / \psi$ Production in $\pi^-$ Be and p Be Collisions at 530 GeV/c

The E672/706 collaboration Abramov, V. ; Antipov, Yu. ; Baldin, B. ; et al.
FERMILAB-PUB-91-062-E, 1991.
Inspire Record 315071 DOI 10.17182/hepdata.42566

None

2 data tables
Table 1

Data is extrapolated to full x range.

Table 2

Data requested from authors.


The Production of $J/_{\psi}$ and Associated Particles in the Collision of 530 GeV/c Protons and Pions with Nuclear Targets

De, K. ; Crittenden, R. ; Dzierba, A. ; et al.
(1989) 467-472, 1989.
Inspire Record 280605 DOI 10.17182/hepdata.22998

None

3 data tables
Table 1

Interacting beam cross-section.

Table 2

No description provided.

Table 3

No description provided.


The Production of $J/\psi$ in 200-{GeV}/a Oxygen - Uranium Interactions

The NA 38 collaboration Abreu, M.C. ; Alimi, M. ; Baglin, C. ; et al.
Z.Phys.C 38 (1988) 117, 1988.
Inspire Record 261007 DOI 10.17182/hepdata.29826

The dimuon production in 200 GeV/nucleon oxygen-uranium interactions is studied by the NA 38 Collaboration. The production ofJ/ψ, correlated with the transverse energyET, is investigated and compared to the continuum, as a function of the dimuon massM and transverse momentumPT. A value of 0.64±0.06 is found for the ratio (ψ/Continuum at highET)/(ψ/Continuum at lowET), from which theJ/ψ relative suppression can be extracted. This suppression is enhanced at lowPT.

1 data table
Table 1

Ratio of number of J/PSI's to number of continuum events in given mass interval.