Koptev, V.P.
DSIG/DOMEGA
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STUDY OF REACTIONS WITH NEUTRON PRODUCTION IN P P AND P D COLLISIONS AT 1-GEV. (IN RUSSIAN)

Baturin, V.N. ; Koptev, V.P. ; Maev, E.M. ; et al.
Yad.Fiz. 31 (1980) 396-402, 1980.
Inspire Record 157175 DOI 10.17182/hepdata.18077

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Differential Cross-sections for $\pi^\pm$ Production at 0-degrees From Proton Proton and Proton - Deuteron Collisions at 1-{GeV}

Abaev, V.V. ; Gridnev, A.B. ; Koptev, V.P. ; et al.
LENINGRAD-80-569, 1980.
Inspire Record 154994 DOI 10.17182/hepdata.37950

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The near-threshold production of Phi mesons in p p collisions.

Hartmann, M. ; Maeda, Y. ; Keshelashvilli, I. ; et al.
Phys.Rev.Lett. 96 (2006) 242301, 2006.
Inspire Record 713863 DOI 10.17182/hepdata.41806

The pp->pp phi reaction has been studied at the Cooler Synchrotron COSY-Juelich, using the internal beam and ANKE facility. Total cross sections have been determined at three excess energies epsilon near the production threshold. The differential cross section closest to threshold at epsilon=18.5 MeV exhibits a clear S-wave dominance as well as a noticeable effect due to the proton-proton final state interaction. Taken together with data for pp omega-production, a significant enhancement of the phi/omega ratio of a factor 8 is found compared to predictions based on the Okubo-Zweig-Iizuka rule.

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