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Measurement of the Proton-Neutron Elastic Scattering Polarization from 2-GeV/c to 6-GeV/c

Diebold, R. ; Ayres, D.S. ; Kramer, S.L. ; et al.

Phys.Rev.Lett. 35 (1975) 632, 1975.

Inspire Record 99560 DOI 10.17182/hepdata.21193

Left-right asymmetries from a deuterium target in a polarized-proton beam were observed with the Argonne National Laboratory effective-mass spectrometer. Results were obtained for both pp and pn elastic scattering from −t=0.15 to 1.0 GeV2 at 2, 3, 4, and 6 GeV/c. For −t≲0.6 GeV2 the pn polarization was found to have the same sign as for pp, but with faster energy dependence, the ratio P(pn)P(pp) at −t=0.3 GeV2 falling from 0.78±0.02 at 2 GeV/c to 0.22±0.03 at 6 GeV/c.

4 data tables

Table 1

No description provided.

Table 2

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Table 3

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Measurement of the Real Part of the Proton Proton Forward Scattering Amplitude from 80-GeV to 286-GeV by Means of Silicon Position Sensitive Detectors

Bartenev, V. ; Carrigan, Richard A. ; Cool, R.L. ; et al.

Sov.J.Nucl.Phys. 23 (1976) 400, 1976.

Inspire Record 100255 DOI 10.17182/hepdata.19082

None

1 data table

Table 1

THE ERRORS INCLUDE THE UNCERTAINTIES IN THE FIT PARAMETERS SLOPE AND SIG, WHILE THE PURELY STATISTICAL ERRORS ARE ALSO GIVEN.

K0 and Lambda Production at the CERN ISR

Busser, F.W. ; Camilleri, L. ; Di Lella, L. ; et al.

Phys.Lett.B 61 (1976) 309-312, 1976.

Inspire Record 101076 DOI 10.17182/hepdata.5534

Transverse momentum distributions of λ o , λ o , and K o , produced in pp collisions at x = 0, have obtained at the CERN ISR. The K o yield is in agreement with published K + , K − results, obtained at this centre-of-mass energy (√ s ≈44 GeV). The results on λ o and λ o production obtained in this experiment are compared with results obtained at lower centre-of-mass energies.

3 data tables

Table 1

No description provided.

Table 2

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Table 3

No description provided.

A Study of Inclusive Spectra and Two Particle Correlations at Large Transverse Momentum

Busser, F.W. ; Camilleri, L. ; Di Lella, L. ; et al.

Nucl.Phys.B 106 (1976) 1-30, 1976.

Inspire Record 108294 DOI 10.17182/hepdata.8491

The inclusive production of π and η mesons at 90° from proton-proton collisions has been measured at the CERN ISR at centre-of-mass energies between 23.5 and 62.4 GeV. The momentum correlation of charged particles emitted together with a large transverse momentum pion has also been studied, using two magnetic spectrometers each centred at 90°.

11 data tables

Table 1

No description provided.

Table 2

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Table 3

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Inclusive Single Particle Production at 90-Degrees in the Center-Of-Mass System for Nuclear Targets and 28.5-GeV/c Incident Protons

Becker, U. ; Burger, J. ; Chen, M. ; et al.

Phys.Rev.Lett. 37 (1976) 1731-1734, 1976.

Inspire Record 115394 DOI 10.17182/hepdata.21074

The invariant cross section for the inclusive production of π+, π−, K+, K−, p, and p¯ is presented for proton-nucleon interactions at plab=28.5 GeV/c. Beryllium, titanium, and tungsten targets were used and the yields were extrapolated to A=1 using the power law σ∼Aα. The exponent α increases with pT, except for protons. The pT dependence of the cross sections is compared with a simple fireball model.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Phi-Meson Production in the Reactions pi+- n --> K- K+ n at 6-GeV/c

Cohen, Daniel H. ; Ayres, D.S. ; Diebold, R. ; et al.

Phys.Rev.Lett. 38 (1977) 269, 1977.

Inspire Record 110508 DOI 10.17182/hepdata.21019

A sample of 1200 ϕ mesons produced in the Zweig-rule-forbidden reactions π±N→ϕN shows a flat t distribution (slope=1.7 ± 0.2 GeV−2) and a cross section suppressed by 0.0032±0.0004 relative to π−p→ωn. Natural-parity-exchange ω and ϕ production have similar t dependences, while ω and ϕ production by unnatural-parity exchange differ markedly. Interference between the ϕ and the underlying K¯K S wave indicates substantial nucleon-spin incoherence between the amplitudes for ϕ and S-wave production.

3 data tables

Table 1

Axis error includes +- 10/10 contribution (RES-DEF(RES=PHI,BACK=CORRECTED)).

Table 2

Axis error includes +- 10/10 contribution (RES-DEF(RES=PHI,BACK=CORRECTED)).

Table 3

STATISTICAL ERRORS ONLY.

Lambda and K0 Production in Polarized p p Interactions at 6-GeV/c

Eisner, R.L. ; Fickinger, W.J. ; Glickman, S.L. ; et al.

Nucl.Phys.B 123 (1977) 361-381, 1977.

Inspire Record 4307 DOI 10.17182/hepdata.35405

Results on K 0 and Λ production in p↑p interactions at 6 GeV are presented. The data are from an exposure of the Argonne 12 ft bubble chamber to a 60% transversely polarized proton beam. Results include data on Λ and K 0 inclusive production, and on the reactions p↑p → p Λ K + (p Σ 0 K + ). The beam asymmetry parameter for p ↑ p → K 0 ( K 0 ) + X is determined to be (−0.52 ± 0.12).

1 data table

Table 1

No description provided.

Study of Pion Absorption Mechanisms in He-4 and Other Nuclei

Jackson, H.E. ; Tabor, S.L. ; Rehm, K.E. ; et al.

Phys.Rev.Lett. 39 (1977) 1601-1604, 1977.

Inspire Record 126555 DOI 10.17182/hepdata.20984

The spectrum and yield of protons produced by 60-, 100-, and 200-MeV π+ and π− beams on targets of He4, C12, Ni62, and Ta181 have been measured at 45° and 90°. A distinct high-energy component is seen in the protons from He4, which is consistent with a two-body absorption mechanism. Its cross section at 220 MeV is somewhat larger than calculated from the π+ + D process. Possible evidence is also seen for multinucleon absorption modes. The data on heavier nuclei are consistent with earlier experiments.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Search for xi* Production in K- p Interactions at 2.87-GeV/c

Briefel, E. ; Gourevitch, S.A. ; Kirsch, L. ; et al.

Phys.Rev.D 16 (1977) 2706, 1977.

Inspire Record 118843 DOI 10.17182/hepdata.24494

Evidence is presented for production of Ξ* resonances, decaying into Ξπ, Ξ(1530)π, ΛK¯, and ΣK¯, in K−p interactions at 2.87 Gev/c. The data represent final combined results from a 30-events/μb hydrogen exposure and an 18-events/μb exposure in deuterium designed to study Ξ* production in the mass interval 1.46-2.07 GeV/c2. In addition to Ξ(1820) and Ξ(1940), signals have been observed at masses of 1630 MeV/c2 and 1860 MeV/c2 decaying into Ξ−π+ and YK¯, respectively. Reaction cross sections have been measured for all final states containing two visible signs of strangeness, and for the final states ΛK−K+ and Σ0K−K+.

4 data tables

Table 1

CROSS SECTIONS ARISING FROM VARIOUS TOPOLOGIES.

Table 2

K- P CROSS SECTIONS FROM DEUTERIUM TARGET EXPERIMENT. RESULTS ARE IN GOOD AGREEMENT WITH THE HYDROGEN DATA.

Table 3

No description provided.

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