An analysis of inclusive production of K0and the meson resonances K*±(892), ρ0(770), f0(975) and f2(1270) in hadronic decays of the Z0is presented, based on about 973,000 multihadronic events collected by the DELPHI detector at LEP during 1991 and 1992. Overall multiplicities have been determined as 1.962±0.060 K0mesons, 0.712±0.067 K*±(892) and 1.21±0.15ρ0(770) per hadronic Z0decay. The average multiplicities of f0(975) for scaled momentum, xp, in the range 0.05≤xp≤0.6 and of f2(1270) for 0.05≤xp≤1.0 are 0.098±0.016 and 0.170±0.043 respectively. The f0(975) and ρ0(770)xp-spectra have similar shapes. The f2(1270)/ρ0(770) ratio increases with xp. The average multiplicities and the differential cross sections are compared with the JETSET Parton Shower model. The model with default parameters fails to reproduce the experimental K0momentum spectrum at low momentum, describes the K*±(892) and ρ0(770)xp-spectrum shapes, but significantly overestimates their production rates. © 1995 Springer-Verlag.

Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., et al. (1995). Production characteristics of K0and light meson resonances in hadronic decays of the Z0. ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS, 65(4), 587-602 [10.1007/BF01578668].

Production characteristics of K0and light meson resonances in hadronic decays of the Z0

Calvi, M.;Paganoni, M.;Ragazzi, S.;Tabarelli, T.;
1995

Abstract

An analysis of inclusive production of K0and the meson resonances K*±(892), ρ0(770), f0(975) and f2(1270) in hadronic decays of the Z0is presented, based on about 973,000 multihadronic events collected by the DELPHI detector at LEP during 1991 and 1992. Overall multiplicities have been determined as 1.962±0.060 K0mesons, 0.712±0.067 K*±(892) and 1.21±0.15ρ0(770) per hadronic Z0decay. The average multiplicities of f0(975) for scaled momentum, xp, in the range 0.05≤xp≤0.6 and of f2(1270) for 0.05≤xp≤1.0 are 0.098±0.016 and 0.170±0.043 respectively. The f0(975) and ρ0(770)xp-spectra have similar shapes. The f2(1270)/ρ0(770) ratio increases with xp. The average multiplicities and the differential cross sections are compared with the JETSET Parton Shower model. The model with default parameters fails to reproduce the experimental K0momentum spectrum at low momentum, describes the K*±(892) and ρ0(770)xp-spectrum shapes, but significantly overestimates their production rates. © 1995 Springer-Verlag.
Articolo in rivista - Articolo scientifico
Physics and Astronomy (miscellaneous)
English
1995
65
4
587
602
none
Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., et al. (1995). Production characteristics of K0and light meson resonances in hadronic decays of the Z0. ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS, 65(4), 587-602 [10.1007/BF01578668].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/187146
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