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Virtual photoproduction of J/ ψ mesons has been measured for 280 GeV muon iron interactions in an iron/scintillator calorimeter target. The J/ψ's were identified by their decay into muon pairs. 315 events were observed, about half of which were elastic. The t , Q 2 and v distributions of these elastic events are presented. The v dependence is measured between 40 and 180 Mev and compared with lower energy photoproduction results. The Q 2 dependence is compared with the predictions of the vector dominance model.

4 data tables

Table 1

TPRIME DISTRIBUTION OF ELASTIC J/PSI EVENTS FOR ALL Q2 AND NU WITH 280 GEV MUON BEAM.

Table 2

NORMALIZED Q**2 DISTRIBUTION OF ELASTIC J/PSI EVENTS FOR ALL NU AND T WITH 280 GEV MUON BEAM.

Table 3

EXTRAPOLATION OF Q**2 AND T DEPENDENCE TO CALCULATE D(SIG)/DT AT Q**2=0 AND T=0 FOR ELASTIC J/PSI PHOTOPRODUCTION PER NUCLEON.

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MEASUREMENT OF DIFFERENTIAL CROSS-SECTIONS FOR INVERSE PION ELECTROPRODUCTION (PI- P ---> E+ E- N) AT THE PION ENERGY E = 164-MEV. (IN RUSSIAN)

Alizade, V.V ; Blokhintseva, T.D. ; Berezhnev, S.F. ; et al.

Yad.Fiz. 30 (1979) 142-145, 1979.

Inspire Record 146077 DOI 10.17182/hepdata.18992

None

2 data tables

Table 1

No description provided.

Table 2

DISTRIBUTIONS OF EVENTS IN THETA, PSI AND Q**2.

Experimental Results on pi- p Interactions in the Center-Of-Mass-Energy Range 1.50-GeV-1.74-GeV

Dolbeau, J. ; Neveu, M. ; Triantis, F.A. ; et al.

Nucl.Phys.B 78 (1974) 233-250, 1974.

Inspire Record 89856 DOI 10.17182/hepdata.21889

Channel cross sections, elastic differential cross sections and single pion production mass spectra and angular distributions are presented for π − p interactions, based on 139 000 events observed at six energies in the center of mass region 1.50–1.74 GeV.

10 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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CM Energies (GeV)

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OBSERVATION OF TWO PROTON CORRELATIONS IN P NE INTERACTIONS AT 300-GEV/C

CHARGED AND NEUTRAL PARTICLES OF LEADING ENERGIES IN INTERACTIONS OF PI- MESONS WITH PHOTOEMULSION NUCLEI AT ENERGIES OF 50-GEV AND 200-GEV. (IN RUSSIAN)

OBSERVATION OF pi- MESON CORRELATED EMISSION IN C - Ta INTERACTIONS AT P (0) = 4.2-GEV/c PER NUCLEON

INCLUSIVE PRODUCTION OF MESONS IN n p INTERACTIONS AT 3.83-GeV/c

ASSOCIATED PRODUCTION OF CUMULATIVE LAMBDA0 HYPERONS AND K0 MESONS

'LEADING' PARTICLES IN PROTON NUCLEUS INTERACTIONS AT P (0) = 3.1-GeV/c AND 4.5-GeV/c. (IN RUSSIAN)

Double Charge Exchange Reactions of Negative Pions on Nuclei With Strange Change

MEASUREMENT OF J / psi PRODUCTION IN 280-GeV/c mu+ IRON INTERACTIONS

MEASUREMENT OF DIFFERENTIAL CROSS-SECTIONS FOR INVERSE PION ELECTROPRODUCTION (PI- P ---> E+ E- N) AT THE PION ENERGY E = 164-MEV. (IN RUSSIAN)

Experimental Results on pi- p Interactions in the Center-Of-Mass-Energy Range 1.50-GeV-1.74-GeV