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The missing mass squared dependence of the average charged particle multiplicity in the reaction K+p → KoX++ from 5-16 GeV/c

par Chliapnikov, P.;Gerdyukov, L.N.;Minaev, N.G.;Vorobjev, A.P.;Dunwoodie, W.;Goldschmidt-Clermont, Yves ;Grant, A.;Sekera, Z.;Stergiou, A.;Tuominiemi, J.K.;Carney, J.N.;Colley, Derek;James, M.J. M.J.;Jones, G.T.;Sherratt, David J;Grard, Fernand ;Herquet, P. ;Henri, Victor;Windmolders, Roland;Verbeure, F;Ginestet, J.;Manesse, D.;Vignaud, Daniel;Sene, Martin
Référence Physics letters. Section B, 52, 3, page (375-380)
Publication Publié, 1974-10

Article révisé par les pairs

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Résumé :

The average charged particle multiplicity, 〈nch(MX2)〉, in the reaction K+p→KoX++ is studied as a function of the mass squared, MX2, of the recoil system X and also as a function of the Ko transverse momentum, pT, at incident momenta of 5.0, 8.2 and 16.0 GeV/c. The complete data samples yield distributions which are not independent of c.m. energy squared, s, They exhibit a linear dependence on log (MX2X/Mo2)[Mo2=1 GeV2] with a change in slope occurring for MX2≈s/2, and do not agree with the corresponding distributions of 〈nch〉 as a function of s for K+ p inelastic scattering. Sub-samples of the data for which Ko production via beam fragmentation, central production and target fragmentation are expected to be the dominant mechanisms show that, within error, the distribution of 〈nch(MX2)〉 versus MX2 is independent of incident momentum for each sub-sample separately. In particular in the beam fragmentation region the 〈nch(MX2)〉 versus MX2 distribution agrees rather well with that of 〈nch〉 versus s for inelastic K+p interactions. The latter result agrees with recent results on the reactions pp → pX and π-p → pX in the NAL energy range. Evidence is presented for the presence of different production mechanisms in these separate regions. © 1974.