Electron production
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Differential Cross Sections in Eta Photoproduction from 0.8 to 1.45 GeV

Bloom, E.D. ; Heusch, C.A. ; Prescott, C.Y. ; et al.
Phys.Rev.Lett. 21 (1968) 1100-1103, 1968.
Inspire Record 54471 DOI 10.17182/hepdata.21721

The cross section for the process γp→pη was studied from 0.8- to 1.45-GeV incident photon energy at center-of-mass angles from 50 to 90°. The data cover a range of energies well beyond previous measurements. The results will aid in the study of I=12 nucleon isobars.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Omega-Meson Production by Virtual Photons

Joos, P. ; Ladage, A. ; Meyer, H. ; et al.
Nucl.Phys.B 122 (1977) 365-382, 1977.
Inspire Record 118808 DOI 10.17182/hepdata.35453

Qausi-elastic ω production by ep scattering in the kinematic region 0.3. < Q 2 < 1.4 GeV 2 and 1.7 < W < 2.8 GeV was studied using a streamer chamber at DESY. The production angular distribution for γ V p → ω p has a strong non-peripheral component for W < 2 GeV. The ω production cross section falls by a factor of 4 as W changes from 1.7 to 2.8 GeV. In contrast the cross section for ω production with | t | < 0.5 GeV 2 is W independent between 1.7 and 2.8 GeV and for W > 2.0 GeV consistent in both W and Q 2 dependence with the predictions of a model based on one-pion exchange and diffraction.

5 data tables
Table 1

FOR ALL T-VALUES. THE GAMMA* P TOTAL CROSS SECTION WAS TAKEN FROM A FIT TO THE DATA OF S. STEIN ET AL., PR D12, 1884 (1975). 'PPD'.

Table 2

'PPD'. PERIPHERAL OMEGA PRODUCTION.

Table 3

No description provided.

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Cross-Section Asymmetry of eta Mesons Photoproduction by Polarized Photons in the Resonance Region

Abramian, L.O. ; Avakian, R.O. ; Aganyants, Aleksandr O. ; et al.
Pisma Zh.Eksp.Teor.Fiz. 25 (1977) 597-600, 1977.
Inspire Record 124683 DOI 10.17182/hepdata.39787

None

1 data table
Table 1

No description provided.


The reaction k- p ---> lambda eta from 0.80 to 1.84 gev/c

Rader, R. ; Barloutaud, R. ; Griselin, J. ; et al.
Nuovo Cim.A 16 (1973) 178-186, 1973.
Inspire Record 86997 DOI 10.17182/hepdata.37772

We present new data on the reaction K−p→Λη from 0.80 to 1.84 GeV/c. An interpretation is attempted in terms of the formation of known hyperon resonances.

3 data tables
Table 1

THE ORIGINAL DATA AT 49 MOMENTA HAVE BEEN GROUPED INTO 27 MOMENTUM BANDS. SIG = 4*PI*(REDUCED CM K- WAVELENGTH)**2*LEG(L=0).

Table 2

DATA FURTHER GROUPED INTO 9 MOMENTUM REGIONS.

Table 3

DATA FURTHER GROUPED INTO 9 MOMENTUM REGIONS.


Differential cross-sections for the photoproduction of eta mesons from protons near 2 gev

Booth, P.S.L. ; Carroll, L.J. ; Holt, J.R. ; et al.
Nucl.Phys.B 71 (1974) 211-216, 1974.
Inspire Record 94714 DOI 10.17182/hepdata.32321

Differential cross sections for the process γ p → p η have been measuredd at c.m. angles of 28°, 35° and 42° at incident energies between 2 GeV and 2.8 GeV. Data from an earlier experiment below 2 GeV have been re-analysed and corrected. The whole set of data is compared with the form ( s − M 2 ) 2 d σ /d t , which fits data at higher energies. There is good agreement above 2 GeV, particularly at the largest angle, but strong departures below.

2 data tables
Table 1

No description provided.

Table 2

THESE DATA ARE A REANALYSIS OF THOSE REPORTED IN P. S. L. BOOTH ET AL., NP B25, 510 (1971). THE CORRECTED RESULTS ARE IN GENERAL ABOUT TWICE THE OLD VALUES.


DIFFERENTIAL CROSS-SECTIONS FOR THE REACTION PI- P ---> ETA N BETWEEN 724-MEV/C AND 2723-MEV/C

Brown, Robert M. ; Clark, A.G. ; Duke, P.J. ; et al.
Nucl.Phys.B 153 (1979) 89-111, 1979.
Inspire Record 146579 DOI 10.17182/hepdata.34682

Differential cross sections for the reaction π − p→ η n at 20 incident pion momenta between 724 and 2723 MeV/ c are presented. The results are compared with previous measurements. The data show clear evidence of non-zero couplings of this channel to known I = 1 2 , S = 0 baryon resonances with masses up to 2000 MeV/ c 2 .

22 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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The photoproduction of eta mesons at small angles

Booth, P.S.L. ; Barton, J.S. ; Carroll, L.J. ; et al.
Nucl.Phys.B 25 (1971) 510-518, 1971.
Inspire Record 68819 DOI 10.17182/hepdata.33806

None

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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ELECTROPRODUCTION OF PI DELTA AND OTHER NONDIFFRACTIVE FINAL STATES

Day, C.T. ; Harding, D.J. ; Klinger, J.S. ; et al.
Phys.Rev.D 23 (1981) 576-586, 1981.
Inspire Record 166699 DOI 10.17182/hepdata.24078

This paper reports the results of an experiment measuring the parameters of various electroproduction reactions for a range in the electroproduction variables 0.7<Q2<4 GeV2 and 2<W2<16 GeV2. This report is limited to nondiffractive exclusive channels, with detailed results regarding the πΔ final states, statistically limited results for KΛ final states, and upper limits on the production of a number of event topologies containing a single unseen neutral particle.

16 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Measurements of Cross-section Asymmetry by Polarized Photons and Models of Eta0 Meson Photoproduction in the Energy Range $E_\gamma = 1$-{GeV} to 2-{GeV}

Vartapetian, G.A. ; Piliposian, S.E. ;
Sov.J.Nucl.Phys. 32 (1980) 804, 1980.
Inspire Record 154948 DOI 10.17182/hepdata.18828

None

20 data tables
Table 1

No description provided.

Table 2

Axis error includes +- 16/16 contribution.

Table 3

No description provided.

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Measurement and analysis of the reaction pi+ p ---> eta0 delta++

Grether, D. ; Gidal, G. ; Borreani, G. ;
Phys.Rev.D 7 (1973) 3200-3212, 1973.
Inspire Record 82063 DOI 10.17182/hepdata.22145

New data for the reaction π+p→η0Δ++ are presented at 11 momenta between 1.28 and 2.67 GeV/c. Existing data at higher momenta are included in an analysis of the reaction in terms of A2 exchange. An effective trajectory parametrization of the data above 2 GeV/c is shown to describe adequately those data, although it yields an effective trajectory steeper than expected from ρ−A2 exchange degeneracy. An existing Regge-pole model is refitted to the data above 2 GeV/c with generally satisfactory results. Both the effective trajectory parametrization and the Regge model are extrapolated to the lower-momenta data and shown to give remarkably good agreement with the data. Evidence is presented against a dominant contribution to the lower-momenta data from s-channel resonances.

3 data tables
Table 1

BACKGROUND SUBTRACTED ONLY ABOVE 1.67 GEV/C.

Table 2

NOT CORRECTED FOR BACKGROUND - MINIMAL DISTORTION EXPECTED. NORMALIZED TO INTEGRATED CROSS SECTION.

Table 3

ISOTROPIC FIT JACKSON FRAME DENSITY MATRIX ELEMENTS.