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Elastic Photoproduction of omega Mesons from Hydrogen, Deuterium, and Complex Nuclei

Abramson, J. ; Andrews, D.E. ; Harvey, John R. ; et al.
Phys.Rev.Lett. 36 (1976) 1428, 1976.
Inspire Record 108496 DOI 10.17182/hepdata.21101

We have studied ω photoproduction using 7.5- to 10.5-GeV tagged photons. Cross sections from hydrogen lie 22% below the bubble chamber results of Ballam et al., but have a similar slope. Density matrices indicate approximate s-channel helicity conservation. The proton-neutron cross-section difference is midway between zero and the value suggested by the γp−γn total-cross-section difference. Fits to the cross sections for D, Be, and Cu and those for Be, C, Al, Cu, and Pb from a previous experiment yield σωN=25.4±2.7 mb and γω24π=7.6±1.2.

11 data tables
Table 1

No description provided.

Table 2

FORWARD CROSS SECTION IS 366 +- 49 MUB/GEV**2 AND SLOPE IS 47.1 +- 8.0 GEV**-2.

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PHOTOPRODUCTION OF K+ HYPERON FROM HYDROGEN AND DEUTERIUM AT 11-GeV

Boyarski, A. ; Diebold, Robert E. ; Ecklund, Stanley D. ; et al.
Phys.Lett.B 34 (1971) 547-550, 1971.
Inspire Record 60853 DOI 10.17182/hepdata.5801

Using an 11-GeV bremsstrahlung beam and the SLAC 20-GeV spectrometer, we have measured K + missing mass spectra from hydrogen and deuterium at five angles with momentum transfer squared ranging from 0.025 to 0.46 GeV 2 . Steps in the spectra as a function of missing mass were found corresponding to production of Λ , Σ , Σ 1385 + Λ 1405 and Λ 1520 . The ratio Σ − and Σ 0 production is not consistent with pure isotopic spin 1 2 in the t -channel for the reaction γ N→K + Σ . The cross sections for γ N → K + Σ 1385 compared with γ N→ πΔ violate an SU(3) prediction.

4 data tables
Table 2

No description provided.

Table 3

No description provided.

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DIFFERENTIAL CROSS-SECTION OF THE pi+ p ---> K+ SIGMA+ (1385) REACTION AT 12-GeV/c

The Dubna-Serpukhov-Baku-Bratislava-Kosice-Minsk-Samarkand-Tbilisi collaboration Bitsadze, G.S. ; Budagov, Yu.A. ; Vinogradov, V.B. ; et al.
JINR-P1-84-658, 1984.
Inspire Record 207769 DOI 10.17182/hepdata.9877

None

7 data tables
Table 1

Axis error includes +- 0.0/0.0 contribution (?////NOT GIVEN).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////NOT GIVEN).

Table 3

No description provided.

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Study of the Reaction $p p$ (Polarized) $\to p \pi^+ n$ With Polarized Beam From 3-{GeV}/$c$ to 12-{GeV}/$c$

Wicklund, A.B. ; Arenton, M.W. ; Ayres, D.S. ; et al.
Phys.Rev.D 34 (1986) 19, 1986.
Inspire Record 17565 DOI 10.17182/hepdata.3936

We present density-matrix elements and single-spin correlations for the reaction p↑p→pπ+n at 3, 4, 6, and 11.75 GeV/c, using both longitudinal and transverse beam polarizations. For small momentum transfers, the spin correlations are mainly due to off-shell π+p elastic scattering, while for larger t there are large polarization effects associated with the production dynamics for p↑p→Δ++n. Comparison of longitudinal and transverse polarization correlations suggests that the Δ++-production spin effects are due mainly to unnatural-parity exchanges. We present a model-dependent amplitude analysis, and extract the energy dependence of the natural- and unnatural-parity-exchange contributions.

36 data tables
Table 1

Unpolarized cross sections.

Table 2

Unpolarized cross sections.

Table 3

Unpolarized cross sections.

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Study of the reaction k+ p ---> k*0(890) delta++ from 4.6-16.0 gev/c

Ciapetti, G. ; Eisner, R.L. ; Irving, A.C. ; et al.
Nucl.Phys.B 64 (1973) 58-108, 1973.
Inspire Record 94946 DOI 10.17182/hepdata.6741

A systematic analysis is presented on the reaction K + p → K ∗0 (890) Δ ++ for nine incident momenta between 4.6–16.0 GeV/ c . Cross sections, differential cross sections and vector meson single density matrix elements are given. As a function of energy, little if any change is observed in either the shapes of the differential cross sections or in the values of the density matrix elements. The data are interpreted in terms of current ideas on t -channel exchange mechanisms.

20 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Comparison of Exclusive Reactions at Large $T$

Baller, B.R. ; Blazey, G.C. ; Courant, H. ; et al.
Phys.Rev.Lett. 60 (1988) 1118-1121, 1988.
Inspire Record 264273 DOI 10.17182/hepdata.3063

Cross sections or upper limits are reported for 12 meson-baryon and two baryon-baryon reactions for an incident momentum of 9.9 GeV/c, near 90° c.m.: π±p→pπ±,pp±,π+°±,K+Σ±, (Λ0/Σ0)K0; K±p→pK±; p±p→pp. By studying the flavor dependence of the different reactions, we have been able to isolate the quark-interchange mechanism as dominant over gluon exchange and quark-antiquark annihilation.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Summary data on elastic $pp$ and $pd$ scattering at small angles and the real part of the $pn$-scattering amplitude in the energy interval 1-10 BeV

Dalkhazhav, N. ; Devinski, P.A. ; Zayachki, V.I. ; et al.
Sov.J.Nucl.Phys. 8 (1969) 196-202, 1969.
Inspire Record 1392874 DOI 10.17182/hepdata.69719

None

32 data tables
Table 1

RE/IM MEASUREMENTS TAKEN FROM TABLE 1 OF KIRILLOVA 65.

Table 2

TABLE 1 (REF. 1 ).

Table 3

RE/IM MEASUREMENTS TAKEN FROM TABLE 1 OF KIRILLOVA 65.

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A MEASUREMENT OF THE K0(L) p ELASTIC CROSS-SECTION FOR 3 less than or equal to p less than or equal to 13-GeV/c AND .1 less than or equal to |t| less than or equal to 1.3-GeV**2

Cittolin, S. ; Gasparini, F. ; Limentani, S. ; et al.
Nucl.Phys.B 157 (1979) 197-211, 1979.
Inspire Record 7663 DOI 10.17182/hepdata.34662

The cross section for the K L 0 p elastic scattering has been measured for the first time. The incident momentum and momentum transfer ranges are 3 ⩽ p ⩽ 13 GeV/ c , 0.1 ⩽ | t | ⩽ 1.3 GeV 2 . The results are compared to those of other experiments related to ours by isotopic spin conservation, finding agreement with some and discrepancies with others. The differential cross sections have been parametrized in the form A e bt . The coefficients show little or no dependence on energy, with A ≅ 9.8 mb · GeV −2 and b ≅ 4.7 GeV −2 . The effective linear trajectory has been determined and gives α 0 = 0.95 ± 0.15, α ′ = −0.35 ± 0.48 GeV −2 , in good agreement with dominance by pomeron exchange.

3 data tables
Table 1

CROSS SECTIONS DEDUCED FROM THE 46 PCT OF EVENTS WHICH YIELD UNIQUE SOLUTIONS.

Table 2

<RAW> CROSS SECTIONS DEDUCED FROM A STATISTICAL TREATMENT OF ALL EVENTS.

Table 3

<SMOOTHED> CROSS SECTIONS DEDUCED FROM A STATISTICAL TREATMENT OF ALL EVENTS.


Diffraction-like structure in elastic proton-proton scattering at large momentum transfers

Allaby, J.V. ; Diddens, A.N. ; Klovning, A. ; et al.
Phys.Lett.B 27 (1968) 49-53, 1968.
Inspire Record 1392696 DOI 10.17182/hepdata.29184

Measurements of wide angle elastic p-p scattering between 7 and 12 GeV/c are reported. Structure found in the angular distributions is suggestive of diffraction.

10 data tables
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The charge exchange $K^- + p \to K^0 + n$ at 9.50 GeV/c

Astbury, P. ; Finocchiaro, G. ; Michelini, A. ; et al.
Phys.Lett. 16 (1965) 328-331, 1965.
Inspire Record 1389639 DOI 10.17182/hepdata.30381

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.