pi+-, K+-, p and anti-p production in Z0 ---> q anti-q, Z0 ---> b anti-b, Z0 ---> u anti-u, d anti-d, s anti-s
(1998) European Physical Journal C. Particles and Fields — Vol. 5, n° 4, p. 585-620 (1998)
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- The DELPHI experiment at LEP uses Ring Imaging Cherenkov detectors for particle identification. The good understanding of the RICH detectors allows the identification of charged pions, kaons and protons, covering the full momentum range from 0.7<p<45.6 GeV/c. The π± , K± , p and p− normalised production rates, their differential cross sections, multiplicities and the maxima ξ∗p of the ξp=ln(1/Xp) distributions are measured for three event samples Z0→qq− , Z0→bb− , Z0→u\overlineu , dd− , ss− , selected from ∼1400000Z0 decays collected by DELPHI in 1994. The results are compared to the predictions of the JETSET string fragmentation model and the HERWIG cluster fragmentation model. The Modified Leading Logarithm Approximation with Local Parton-Hadron Duality is tested. The ξ∗p dependence on the primary quark flavour is investigated and quantified for the different particle distributions. The π± , K± , p and p− multiplicities are measured with precisions from ±4 % to ±6 %. For the Z0→qq− , and Z0→bb− , event samples, these improve on previous measurements. The π± , K± , p and p− multiplicities for Z0→u\overlineu , dd− , ss− are presented for the first time.
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Citations
Abreu, P., Cortina Gil, E., DELPHI Collaboration, & et al. (1998). pi+-, K+-, p and anti-p production in Z0 ---> q anti-q, Z0 ---> b anti-b, Z0 ---> u anti-u, d anti-d, s anti-s. European Physical Journal C. Particles and Fields, 5(4), 585-620. https://doi.org/10.1007/s100529800989 (Original work published 1998)