G. R. Gulkanyan

Direct soft photon production in K+p and pi+p interactions at 250 GeV/c

Inclusive production of direct soft photons is studied inK+p andK+π interactions at 250 GeV/c. Total cross sections, Feynman-x and transverse momentum distributions of direct γs are presented. The measured cross sections are several times larger than expected from QED inner bremsstrahlung, indicating the presence of an anomalous soft photon source. The model of Lichard and Van Hove, based on the “cold quark-gluon plasma” picture, agrees with the data.

Inclusive meson resonance production inK+p interactions at 250 GeV/c

AbstractA detailed analysis of the inclusive production of the vector mesonsφ,K*+,0(892)

Negative binomials and multiplicity distributions in 250 GeV/cK+ and π+ interactions on Al and Au nuclei

\bar K*^0 (892),\rho ^{ + ,0} ,\omega

Collective characteristics of hadron systems produced in beam fragmentation of π+p collisions at 250 GeV/c

and the tensor mesonsK2*0)(1430) andf2(1270) inK+p interactions at 250 GeV/c is presented The data are compared with results at lower energies and with various quark-parton models. The production ofρ0,K*0(892) and

Neutral strange particle production in K^{+} and \pi^{+} collisions with Al and Au nuclei at 250 GeV/c

\bar K*^0 (892)

The A dependence of fast-particle spectra in π +, K +, and p interactions with Al and Au targets at 250 GeV/c

increases at the same rate as a function ofs, is concentrated in the central region and is not reproduced by the models. Production of the tensor mesonsf2(1270) andK2*0(1340) is suppressed relative toρ0 andK*0(892) by a factor of about 3.