Measurement of antiproton lifetime using the ice storage ring

Lifetime Measurement of ATF Damping Ring

The purpose of the ATF darnping ring is the development of technologies for .producing a low ernittance bearn required in future linear colliders such as . .-, -_ JLC. The lifetime of the damping ring is very short (typically a few minutes). It is limited by elastic beam-gas scattering along with a srnall dynamic aperture, and by single intra-beam scattering (Touschek effect). The Touschek life...

Cpt Symmetry and the Antiproton Lifetime

The CPT symmetry of relativistic quantum field requires the total lifetimes of particles and antiparticles be equal. Detection of p lifetime shorter than τp ∼ > O(10) yr would signal breakdown of CPT invariance, combined with B–violation. Limits on τp inferred from laboratory and cosmic ray measurements range from months to about one Myr, placing lower limits on CPT–violating scales that depend...

CERN’s Low Energy Antiproton Ring

assessment of the efficiency of s.p.g.c refineries using network dea

data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...

the use of appropriate madm model for ranking the vendors of mci equipments using fuzzy approach

abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...