The NA24 experiment at CERN investigated inclusive γγ, π0π0, and γπ0 final states in the mass range between 4 and 9 GeV/c2 produced in π−p, π+p, and pp reactions at a c.m.-system energy √s=23.7 GeV. The π0π0 cross sections agree well with expectations of the quark-parton model. For γπ0 production in π−p and pp reactions, a clear signal is observed and cross sections are shown. The production of γγ events was observed with a statistical significance of 2.9σ in π−p reactions. The cross section is in agreement with a higher-order QCD prediction.

Measurement of the production of high-massγ γ, π0 π0, and γ π0 pairs in π-p, π+p, and pp collisions at 300 GeV/c / de Marzo, C., de Palma, M., Favuzzi, C., Maggi, G., Nappi, E., Posa, F., Ranieri, A., Selvaggi, G., Spinelli, P., Bamberger, A., Fuchs, M., Heck, W., Loos, C., Marx, R., Runge, K., Skodzek, E., Weber, C., Wülker, M., Zetsche, F., Artemiev, V., et al.. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - STAMPA. - 42:3(1990), pp. 748-758. [10.1103/PhysRevD.42.748]

Measurement of the production of high-massγ γ, π0 π0, and γ π0 pairs in π-p, π+p, and pp collisions at 300 GeV/c

Favuzzi, C.;Maggi, G.;
1990

Abstract

The NA24 experiment at CERN investigated inclusive γγ, π0π0, and γπ0 final states in the mass range between 4 and 9 GeV/c2 produced in π−p, π+p, and pp reactions at a c.m.-system energy √s=23.7 GeV. The π0π0 cross sections agree well with expectations of the quark-parton model. For γπ0 production in π−p and pp reactions, a clear signal is observed and cross sections are shown. The production of γγ events was observed with a statistical significance of 2.9σ in π−p reactions. The cross section is in agreement with a higher-order QCD prediction.
1990
Measurement of the production of high-massγ γ, π0 π0, and γ π0 pairs in π-p, π+p, and pp collisions at 300 GeV/c / de Marzo, C., de Palma, M., Favuzzi, C., Maggi, G., Nappi, E., Posa, F., Ranieri, A., Selvaggi, G., Spinelli, P., Bamberger, A., Fuchs, M., Heck, W., Loos, C., Marx, R., Runge, K., Skodzek, E., Weber, C., Wülker, M., Zetsche, F., Artemiev, V., et al.. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - STAMPA. - 42:3(1990), pp. 748-758. [10.1103/PhysRevD.42.748]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/2879
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