PHOTON-PHOTON COLLISION EXPERIMENTS AT SPEAR
نویسندگان
چکیده
منابع مشابه
Photon-photon Collision Experiments at Spear*
The SLAC electron-positron colliding beam facility and its associated magnetic detector facility are described. General experimental problems in performing photon-photon collision experiments at SPEAR and the proposed experiment of Masek et al. are discussed. -e (Talk presented at the International Colloquium on Photon-Photon Collisions in Electron-Positron Storage Rings, Paris, Sept. 3-4, 1973...
متن کاملExclusive Final States from Photon - Photon Collisions at Spear
Studies of exclusive final states produced by the two-photon process have been made at SPEAR by the Mark II and by the Crystal Ball Collaborations. region 500 MeV/c2 Measurements of r%rand x0x0 production in the mass < mx, < 2000 MeV/c2 are presented. These data include strong signals from the well-known f(1270) meson. The A2(1310) has been observed via its rr"n decay mode and its partial width...
متن کاملTwo - Photon Interactions from Mark Ii at Spear
Results on the two-photon production of the n', f(1270), A2(1310), and f'(1515) mesons at SPEAR energies are presented using data taken with the Mark II detector. The radiative width of the n' has been determined to be pYY(n') = 5.8 +_ 1.1 keV (20% systematic uncertainty). Upper limits for the radiative widths of the f, A2, and f' have been determined. R&sum&: Nous presentons des resultats sur ...
متن کاملQuadrupole Shunt Experiments at SPEAR*
As part of a program to align and stabilize the SPEAR storage ring, a switchable shunt resistor was installed on each quadrupole to bypass a small percentage of the magnet current. The impact of a quadrupole shunt is to move the electron beam orbit in proportion to the off-axis beam position at the quadrupole and to shift the betatron tune. Initially, quadrupole shunts in SPEAR were used to pos...
متن کاملStrong Photon-Photon Interactions at the Single-Photon Level
Engineering light at the single photon level is a long-standing goal in physics. In this thesis, we investigate optical nonlinearities at the single photon level orchestrated by an optical cavity. We demonstrate an all-optical transistor where one stored ‘gate’ photon controls the propagation of a ’source’ light beam. The system is based on EIT and a highcooperativity cavity. Each ’gate’ photon...
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ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1974
ISSN: 0449-1947
DOI: 10.1051/jphyscol:1974205