1,721,113 research outputs found
On the interpretation of the European Muon Collaboration effect
No full textWe show that the European Muon collaboration effect can be understood in terms of the change in the mass scale of a bound nucleon, rather than in terms of a change in confinement scale.G. V. Dunne and A. W. Thoma
History of the European Muon Collaboration (EMC)
No full textThe European Muon Collaboration (EMC), formed in the years 1972–1974, was one of the first large experimental particle physics collaborations with more than 100 physicists. Its aim was to study the quark structure of the nucleon through deep inelastic muon scattering. Two seminal discoveries were made; the EMC effect and the spin crisis. In this paper the history of the collaboration from beginning to end is described. The appendices describe some of the difficulties met during the development and performance of the experiments as well as a description of some of the social interactions in the collaboration
Does the A dependence in high-p<SUB>T</SUB> jets come from the European muon collaboration effect?
No full textWe show that the models for the European Muon Collaboration effect without a cumulative region (x>1) are not compatible with the "anomalous nuclear enhancement" of high-transverse-momentum jet cross sections. This assertion depends only on the single-hard-scattering picture without final-state interactions or multiscattering and is independent of the exact forms of the nuclear structure functions. We also show that it is possible to reproduce a part of the nuclear enhancement if one includes the cumulative effects
A LARGE MAGNETIC SPECTROMETER SYSTEM FOR HIGH-ENERGY MUON PHYSICS
No full textThe European Muon Collaboration has built a large magnetic spectrometer system for deep inelastic muon scattering experiments at the CERN SPS muon beam. The general characteristics of the apparatus - composed of a target of either liquid hydrogen or deuterium, or iron plus scintillator, followed by a large magnet with wire chambers before and after it for precise angle and momentum measurement, a muon identifier, large trigger hodoscopes, and hadron identifiers - are explained and each part is described in some detail. The main features of the data-acquisition and apparatus-monitoring systems and of the off-line event reconstruction are given. © 1981
MEASUREMENT OF THE NUCLEON STRUCTURE FUNCTION F(2) BY MUON IRON INTERACTIONS AT 280-GEV, 250-GEV AND 120-GEV. (TALK)
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MEASUREMENT OF THE PROTON STRUCTURE FUNCTION F(2) IN MUON - HYDROGEN INTERACTIONS AT 280-GEV AND 120-GEV. (TALK)
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