Date

Pion-deuteron coherent scattering at high-energy

Bradamante, F. ; Fidecaro, G. ; Fidecaro, M. ; et al.
Phys.Lett.B 31 (1970) 87-92, 1970.
Inspire Record 63231 DOI 10.17182/hepdata.28691

The differential cross-section for π − d elastic scattering has been measured at 9.0, 13.0, and 15.2 GeV/ c for t -values up to 2.3 GeV 2 . The results are analysed by comparison with the Glauber scattering model.

4 data tables

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Measurement of proton Compton scattering at 6 gev and small momentum transfers

Buschhorn, G. ; Criegee, L. ; Dubal, L. ; et al.
Phys.Lett.B 33 (1970) 241-244, 1970.
Inspire Record 63064 DOI 10.17182/hepdata.28544

Compton scattering on protons has been measured at a mean photon energy of 6 GeV and four-momentum transfers − t between 0.06 and 0.60 (GeV/ c ) 2 . The differential cross section shows a diffraction-like behaviour. The cross section extrapolated to t =0 is in fair agreement with the optical point. Discrepancies with the vector meson dominance model are pointed out.

1 data table

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Search for exotic resonances in k- d interactions at 3 gev/c

The SABRE collaboration Giacomelli, G. ; Lugaresi-Serra, P. ; Minguzzi-Ranzi, A. ; et al.
Phys.Lett.B 33 (1970) 373-376, 1970.
Inspire Record 63055 DOI 10.17182/hepdata.28726

A systematic search for exotic states produced in K − d interactions at 3 GeV/ c is reported. From the analysis of the mass spectra of strange mesons, non-strange mesons, hyperons with S = −1 and S = −2, upper limits for the production cross sections of exotic resonances may be placed at one or two orders of magnitude smaller than for the production of normal resonances of same strangeness and baryon number.

1 data table

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Angular dependence of k-l k-s regenerative scattering for copper and lead nuclei at high energies

Foeth, H. ; Holder, M. ; Radermacher, E. ; et al.
Phys.Lett.B 31 (1970) 544-548, 1970.
Inspire Record 63172 DOI 10.17182/hepdata.28805

Elastic and inelastic K L  S regenerative scattering on copper and lead nuclei have been observed up to a momentum transfer of 0.17 GeV/ c . The elastic differential cross-section is of a ”diffractive” type. It can be described successfully in terms of an optical model only assuming an appreciable neutron excess in the vicinity of the nuclear surface.

2 data tables

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Elastic scattering of protons on deuterons at high energy

Bradamante, F. ; Fidecaro, G. ; Fidecaro, M. ; et al.
Phys.Lett.B 32 (1970) 303-308, 1970.
Inspire Record 63124 DOI 10.17182/hepdata.28773

The differential cross-section for pd elastic scattering has been measured at 9.7, 12.8 and 15.8 GeV/ c for t -values up to −2 GeV 2 . The Glauber multiple scattering model has been used to analyse the data, the main interest being the double scattering region.

3 data tables

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Study of the phi meson by e+ e- annihilation into charged k mesons and tests of vector dominance models

Bizot, J.C. ; Buon, J. ; Chatelus, Y. ; et al.
Phys.Lett.B 32 (1970) 416-420, 1970.
Inspire Record 63115 DOI 10.17182/hepdata.28809

We have measured the e + e − → ø reaction by its K + K − decay mode. Using our previous results on K O K O and the 3π decay mode of the ø mesons, we compute Γ ø → e + e − and then compare the whole Orsay results to theoretical predictions.

2 data tables

FITTED CROSS SECTIONS AT PHI PEAK. ONLY PHI --> K+ K- MEASURED HERE - ANALYSIS USES PREVIOUS EXPERIMENTS FOR OTHER CHANNELS: J.E. AUGUSTIN ET AL., PL 28B, 517 (1969).

EXCITATION OF K+ K- CHANNEL MEASURED AROUND PHI RESONANCE AT 13 ENERGIES.


Photoproduction of neutral pions on hydrogen at photon energies between 200 and 440 mev

Fischer, G. ; Fischer, H. ; Von Holtey, G. ; et al.
Nucl.Phys.B 16 (1970) 93-101, 1970.
Inspire Record 62733 DOI 10.17182/hepdata.16659

Differential cross sections for neutral-pion photoproduction on hydrogen in the region of the first resonance have been measured by two independent experiments detecting the recoil protons. The results of both measurements have been combined into one set of cross sections covering the photon energy range from 200 to 440 MeV at pion c.m. angles between 50 and 160 degrees.

55 data tables

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Interference between $K_L \to \pi^+ \pi^-$ and $K_S \to \pi^+ \pi^-$ behind a copper regenerator

Faissner, H. ; Foeth, H. ; Staude, A. ; et al.
Phys.Lett.B 30 (1969) 204-208, 1969.
Inspire Record 56677 DOI 10.17182/hepdata.28905

The interference between K L → π + π - and K S → π + π - behind a copper regenerator has been observed in a high statistics experiment. The modulus and the argument of the complex ratio ϱ ( p )/ η +- , where ϱ ( p ) is the regeneration amplitude and η +- = A ( K L → π + π - )/ A (K S → π + π - ) has been measured over the momentum interval from 2.0 GeV/ c to 6.0 GeV/ c . The phase of η +- as deduced from this measurement and from the optical model value of arg [ ϱ ( p )] is 49.3° ± 6.8°. The K L K S mass difference has been found to be Δm/ h ̵ = (0.555 ± 0.020) × 10 10 sec −1 .

1 data table

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Gamma p INTERACTIONS AT 5.25-GeV

Ballam, Joseph ; Chadwick, G.B. ; Guiragossian, Zaven G.T. ; et al.
Phys.Lett.B 30 (1969) 421-425, 1969.
Inspire Record 54868 DOI 10.17182/hepdata.28894

Photoproduction of resonances has been studied using positron annihilation radiation at 5.25 GeV in the SLAC 40-inch hydrogen bubble chamber. Results are presented on the nonstrange particle events and related to the vector dominance model.

1 data table

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Elastic scattering and single-pion production in proton proton interactions at 6.92 bev/c

Alexander, G. ; Carmel, Z. ; Eisenberg, Y. ; et al.
Phys.Rev. 173 (1968) 1322-1329, 1968.
Inspire Record 55956 DOI 10.17182/hepdata.5540

Elastic scattering and single-pion production in pp collisions at 6.92 BeVc were studied in the BNL 80-in. hydrogen bubble chamber. Partial cross sections for the different final states are given. The reaction pp→nN1238*(pπ+) with σ=1.9±0.3 mb is analyzed and is in agreement with the modified one-pion-exchange model. Single-pion production can be explained as due mainly to two channels: (a) pp→N1238*(pπ+)n, and (b) pp→p(nπ+) or pp→p(pπ0), where the (nπ+) and (pπ0) pairs are in an I=12 state.

4 data tables

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