Abstract
The reaction e+e-→ e+e-γ*γ*→ e+e- hadrons is analysed using data collected by the L3 detector during the LEP runs at √s= 130-140 GeV and √s= 161 GeV. The cross sections σ(e+e-→ e+e-hadrons) and σ(γγ -» → hadrons) are measured in the interval 5 ≤ Wγγ ≤ 75 GeV. The energy dependence of the σ(γγ → hadrons) cross section is consistent with the universal Regge behaviour of total hadronic cross sections.
Original language | English |
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Pages (from-to) | 450-464 |
Number of pages | 15 |
Journal | Physics Letters B |
Volume | 408 |
Issue number | 1-4 |
DOIs | |
State | Published - Sep 11 1997 |
Funding
a I. Physikalisches Institut, RWTH, D-52056 Aachen, FRG 1 III. Physikalisches Institut, RWTH, D-52056 Aachen, FRG ’ b National Institute for High Energy Physics, NIKHEE and University of Amsterdam, NL-1009 DB Amsterdam, The Netherlands ’ University of Michigan, Ann Arbor; MI 48109, USA e Laboratoire d’Annecy-le-Vieux de Physique des Particules, LAPPIN2P3-CNRS, BP 110. F-74941 Annecy-le-Vieux CEDEK, France e Johns Hopkins Vniversiry, Baltimore, MD 21218, USA ’ Institute of Physics, University of Basel, CH-4056 Basel, Switzerland g Louisiana State University, Baton Rouge, LA 70803, USA h Institute of High Energy Physics, IHEP 100039 Beijing, China6 i Humboldt University, D-10099 Berlin FRG ’ j University of Bologna and INFN-Sezione di Bologna. I-40126 Bologna, Italy ’ Tata Institute of Fundamental Research, Bombay 400 005, India t Boston University, Boston, MA 02215. USA m Northeastern University* Boston, MA 02115, USA n Institute of Atomic Physics and Vniversip of Bucharest, R-76900 Bucharest, Romania 0 Central Research Institute for Physics of the Hungarian Academy of Sciences, H-1525 Budapest 114, Hungary2 v Harvard University, Cambridge, MA 02139. USA 9 Massachusetts Institute of Technology? Cambridge, MA 02139, USA r INFN Sezione di Firenze and University of Florence, I-5012.5 Florence, Italy s European Laboratory for Particle Physics, CERN, CH-1211 Geneva 23, Switzerland ’ World Laboratory, FBLJA Project, CH-I211 Geneva 23, Switzerland u University of Geneva, CH-1211 Geneva 4, Switzerland y Chinese University of Science and Technology, VSTC, Hefei, Anhui 230 029, China 6 w SEFT, Research Institute for High Energy Physics, PO. Box 9, SF-00014 Helsinki, Finland x University of Lausanne, CH-1015 Lausanne. Switzerland y INFN-Sezione di Lecce and Vniversitd Degli Studi di Lecce, I-73100 Lecce. Italy ’ Los Alamos National Laboratory Los Alamos. NM 87544, USA aa Institut de Physique Nucleaire de Lyon, IN2P3XNRSVniversite’ Claude Bernard, F-69622 Wlleurbanne, France ab Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas, CIEMAT, E-28040 Madrid, Spain’ ac INFN-Sezione di Milano, I-20133 Milan, Italy ad Institute of Theoretical and Experimental Physics, ITEM Moscow, Russia ae INFN-Sezione di Napoli and University of Naples, I-80125 Naples, Italy af Department of Natural Sciences, University of Cyprus, Nicosia, Cyprus ag University of Nijmegen and NIKHEE NL-6525 ED Nijmegen, The Netherlands ah Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA ai California Institute of Technology, Pasadena, CA 91125, USA a.iI NFN-Sezione di Perugia and Vniversitd Degli Studi di Perugia. I-06100 Perugia, Italy ak Carnegie Mellon University, Pittsburgh, PA 15213, USA ae Princeton University, Princeton, NJ 08544, USA am INFN-Sezione di Roma and University of Rome, “La Sapienza”, I-00185 Rome, Italy an Nuclear Physics Institute, St. Petersburg, Russia a0 University and INFN, Salerno, I-84100 Salerno, Italy *p University of California, San Diego, CA 92093, USA w Dept. de Fisica de Particulas Elementales, Univ. de Santiago, E-15706 Santiago de Compostela, Spain ar Bulgarian Academy of Sciences, Central Lab. of Mechatronics and Instrumentation, BV-11 I3 Sofa, Bulgaria U Center for High Energy Physics, Korea Adv. Inst. of Sciences and Technology, 305-701 Taejon, South Korea ai University of Alabama, Tuscaloosa, AL 35486, USA au Vtrecht University and NIKHEF NL-3584 CB Vtrecht, The Netherlands av Purdue University* West Lafayette, IN 47907, USA aw Paul Scherrer Institut, PSI, CH-5232 Villigen, Switzerland Q’ DESY-Institut fur Hochenergiephysik D-15738 Zeuthen, FRG az Eidgendssische Technische Hochschule, ETH Zurich, CH-8093 Ziirich, Switzerland