Skip to main navigation Skip to search Skip to main content

First results of the CERES electron pair spectrometer from p + Be, p + Au and S + Au collisions

  • R. Baur
  • , A. Breskin
  • , R. Chechik
  • , A. Drees
  • , C. Jacob
  • , U. Faschingbauer
  • , P. Fischer
  • , Z. Fraenkel
  • , Ch Fuchs
  • , E. Gatti
  • , J. Gläß
  • , P. Glässel
  • , Th Günzel
  • , C. P. de los Heros
  • , F. Heß
  • , P. Holl
  • , D. Irmscher
  • , H. Kraner
  • , H. Klein
  • , A. Longoni
  • R. Männer, H. Nägele, K. H. Noffz, L. H. Olsen, A. Pfeiffer, I. Ravinovich, P. Rehak, B. Schmitt, A. Schön, J. Schukraft, Ch Schwick, M. Sampietro, A. Shor, H. J. Specht, V. Steiner, S. Tapprogge, G. Tel-Zur, I. Tserruya, Th Ullrich, N. Wermes, A. Wärner, J. P. Wurm
  • Heidelberg University 
  • Weizmann Institute of Science
  • Max Planck Institute for Nuclear Physics
  • Polytechnic University of Milan
  • Brookhaven National Laboratory
  • CERN

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The CERES experiment (CErenkov Ring Electron Spectrometer) studies the production of low mass e+e- pairs in proton-proton, proton-nucleus and nucleus-nucleus interactions at the CERN SPS. The CERES spectrometer, has a novel design based on two Ring Imaging Cherenkov (RICH) counters, and it operates close to its design specifications. Data were recorded with 200 GeV u sulfur beam and 450 GeV proton beam. The analysis is in progress. We have extracted first e+--pairs samples for p+Be, p+Au and S+Au collisions. In addition other physics topics were addressed. Inclusive photon spectra were measured in S+Au interactions. No excess over known hadronic sources was found within our present systematic error of 11%. Results on high pi charged pion spectra are presented up to 4 GeV c. We also studied the production of e+e--pairs m the strong electromagnetic fields of very peripheral S+Pt collisions. The data are well described by a first-order perturbative QED-calculation.

Original languageEnglish
Pages (from-to)87-94
Number of pages8
JournalNuclear Physics, Section A
Volume566
Issue numberC
DOIs
StatePublished - Jan 3 1994

Fingerprint

Dive into the research topics of 'First results of the CERES electron pair spectrometer from p + Be, p + Au and S + Au collisions'. Together they form a unique fingerprint.

Cite this