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Prog. Theor. Phys. Vol. 50 No. 2 (1973) pp. 610-625

[ Full Text PDF : FREE ACCESS (1395K) ]

Inclusive Reaction γp→π-+X++ Mediated by Vector Meson Production

Nobuyuki Murai and Tateaki Sasaki*

Physics Department, McGill University, Montreal
*Department of Physics, University of Tokyo, Tokyo

(Received January 26, 1973)

Abstract:

The inclusive reaction γp→π-+X++ is investigated under the following assumptions: a) The pion spectrum results from the ρ meson decay, b) the vector meson dominance model for the photon is valid and c) distributions for favoured and disfavoured fragments are different. A simple ρ distribution scaling at relatively low energies leads quite well to the π- longitudinal distribution, with the effect of the “elastic” reaction γp→ρ0p excluded. The spectrum has the following features: 1) It increases in the central region and decreases in the proton fragmentation region as energy increases and 2) its slope is gentle in the photon fragmentation region. The π- distribution integrated over q⊥2 is predicted at Eγ=18, 30 and 100 GeV. Further, the inclusive reaction pp→π-+X3+ is supplementarily explored in a way consistent with γp→π-+X++ to see that the proton fragmentations have the same distribution irrespective of the impact p and γ. The increase of the distribution in the region |xπ|\lesssim0.1 with energy is well reproduced.


URL : http://ptp.ipap.jp/link?PTP/50/610/
DOI : 10.1143/PTP.50.610

[ Full Text PDF : FREE ACCESS (1395K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 54 No. 1 (1975) pp. 154-165 :
    New Expression for Particle Distribution Due to Energy Momentum Conservation in Longitudinal Phase Space
    Nobuyuki Murai and Tateaki Sasaki

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