Measurement of cross sections for processes involving e + e − annihilation to hadrons at the VEPP-2M collider

• Autor: Achasov, M. N.
• Assuntos: ANNIHILATION ; CROSS SECTIONS ; ELECTRONS ; GEV RANGE 01-10 ; HADRONS ; MEV RANGE 100-1000 ; NUCLEAR PHYSICS ; PARTICLE DECAY ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; PIONS MINUS ; PIONS NEUTRAL ; PIONS PLUS ; POSITRONS ; SPECTRAL FUNCTIONS ; TAU NEUTRINOS ; TAU PARTICLES ; VECTOR MESONS
• É parte de: Physics of atomic nuclei, 2007-07, Vol.70 (7), p.1235-1247
• Descrição: Results obtained by measuring, in experiments at the VEPP-2M e{sup +}e{sup -} collider with the CMD-2 and SND detectors at the Novosibirsk Institute of Nuclear Physics, cross sections for e{sup +}e{sup -} {sup {yields}} hadrons annihilation processes at energies in the range 360 {<=} {radical}s {<=} 1380 MeV are surveyed. The measured cross sections and the vector-meson parameters deduced from an analysis of these cross sections are presented. The cross section for the process e{sup +}e{sup -} {sup {yields}} {pi}{sup +}{pi}{sup -} is compared with the spectral function for the decay {tau}{sup -} {sup {yields}} {pi}{sup -}{pi}{sup 0}{nu}{sub {tau}}.
  
• Editor: United States
  
• Idioma: Inglês