Two Photon Exclusive Production of Charged Pion and Kaon Pairs | Zendy

G. S. Greenbaum | Zendy

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Two Photon Exclusive Production of Charged Pion and Kaon Pairs

Author(s) -

G. S. Greenbaum

Publication year - 2004

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/826666

Subject(s) - physics , particle physics , pion , hadron , invariant mass , quantum chromodynamics , perturbative qcd , nuclear physics , photon , momentum transfer , production (economics) , quark model , scattering , quarkonium , quantum mechanics , macroeconomics , economics

Two-photon exclusive hadron production at large momentum transfer probes the short distance physics of perturbative Quantum Chromodynamics and explores the long distance physics of bound-state quark dynamics. The differential cross section is measured for the exclusive reactions {gamma}{gamma} {yields} {pi}{sup +}{pi}{sup -} and {gamma}{gamma} {yields} K{sup +}K{sup -} in the two-photon invariant mass region 1.4 {le}M{sub {gamma}{gamma}} < 4.0 GeV/c{sup 2} and center-of-mass scattering angle |cos{theta}*| < 0.8. The SU(3)-flavor symmetry breaking effects of the kaon wave function are examined. This analysis is performed using 139 pb{sup -1} of untagged data collected with the TPC/Two-Gamma detector.

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