Hadron production by e+e- annihilation at center-of-mass energies between 2.6 and 7.8 GeV. I. Total cross section, multiplicities, and inclusive momentum distributions
CERN1, Stanford University2, Harvard University3, Vanderbilt University4, General Electric5, University of California, Santa Barbara6, Hewlett-Packard7, Lawrence Berkeley National Laboratory8, Fermilab9, Alcatel-Lucent10, University of Paris11, IBM12, University of California, Berkeley13, Pierre-and-Marie-Curie University14, Université Paris-Saclay15, Massachusetts Institute of Technology16, University of Illinois at Urbana–Champaign17
TL;DR: In this article, the authors measured multihadron production in e+e− annihilation at center-of-mass energies between 2.6 and 7.8 GeV and found that the total hadronic cross section was approximately 2.7 times the cross section for the production of muon pairs at c.m.
Abstract: Measurements of multihadron production in e+e− annihilation at center-of-mass energies between 2.6 and 7.8 GeV are presented. Aside from the narrow resonances ψ(3095) and ψ(3684), the total hadronic cross section is found to be approximately 2.7 times the cross section for the production of muon pairs at c.m. energies below 3.7 GeV and 4.3 times the muon-pair cross section at c.m. energies above 5.5 GeV. Complicated structure is found at intermediate energies. Charged-particle multiplicities and inclusive momentum distributions are presented.
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Paul Scherrer Institute1, Joint Institute for Nuclear Research2, University of Pavia3, CERN4, Joseph Fourier University5, University of Southampton6, Novosibirsk State University7, Budker Institute of Nuclear Physics8, RWTH Aachen University9, University of Silesia in Katowice10, University of Mainz11, Polish Academy of Sciences12, Humboldt University of Berlin13, École Polytechnique14, Karlsruhe Institute of Technology15, Kharkov Institute of Physics and Technology16, Roma Tre University17, KEK18, University of Alberta19, Jagiellonian University20, University of Bologna21, Spanish National Research Council22, University of Paris23, University of Hawaii24, University of Liverpool25, University of Parma26, University of Freiburg27, Chinese Academy of Sciences28, Baylor University29, University of Wuppertal30
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241 citations
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127 citations