Production of pi(sup+), pi(sup-), K(sup+), K(sup-), p and overbar p in Light (uds), c and b Jets from Z(sup o) Decays.

Technical Information Center Oak Ridge Tennessee

关键词: Charged particles;    Decay;    Production;    Pions;    Kaons;   

RP-ID  :  DE2004826448

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We present improved measurements of the differential production rates of stable charged particles in hadronic Z(sup 0) decays, and of charged pions, kaons and protons identified over a wide momentum range using the SLD Cherenkov Ring Imaging Detector. In addition to flavor-inclusive Z(sup 0) decays, measurements are made for Z(sup 0) decays into light (u, d, s), c and b primary flavors, selected using the upgraded Vertex Detector. Large differences between the flavors are observed that are qualitatively consistent with expectations based upon previously measured production and decay properties of heavy hadrons. These results are used to test the predictions of QCD in the Modified Leading Logarithm Approximation, with the ansatz of Local Parton-Hadron Duality, and the predictions of three models of the hadronization process.