Inclusive yields and transverse spectra of non-strange mesons: Comparisons with the quark model,and an estimate of the fraction of “direct” pion production |
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| Authors: | H Kirk G Rudolph U Kriegel H Vogt K Böckmann HG Zobernig H Bohr VT Cocconi MJ Counihan PK Malhotra DRO Morrison H Saarikko P Schmid D Kisielewska KWJ Barnham RM Eason F Mandl A Para |
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| Institution: | III. Physikalisches Institut der Technischen Hochschule, Aachen, Germany;Institut für Hochenergiephysik der Akademie der Wissenschaften der DDR, Zeuthen-Berlin, Germany;Physikalisches Institut der Universität, Bonn, Germany;CERN, European Organization for Nuclear Research, Geneva, Switzerland;Institute of Nuclear Physics and Techniques of the Academy of Mining and Metallurgy, Cracow, Poland;Physics Department, Imperial College, London, UK;Institut für Hochenergiephysik der Östereichischen Akademie der Wissenschaften, Vienna, Austria;Institute of Experimental Physics, Warsaw University, Warsaw, Poland |
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| Abstract: | Recent data on the production ofη, ?0, ω and other mesons in hadron-hadron collisions at intermediate energies are studied. Their transverse spectra dσ/dpT2 are all found to be approximately exponential, with similar slopes, ～3.4 (GeV/c)?2, up to about pT2 = 2(GeV/c)2. The inclusive yields of the mesons are broadly in agreement with quark model predictions. In the case of pions, a distimction is made between those directly produced and those produced indirectly via resonance decay. It is estimated that between 10% and 30% of pions are directly produced. |
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| Keywords: | Aachen-Berlin-Bonn-CERN-Cracow-London-Vienna-Warsaw Collaboration |
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