Evidence For Direct Gamma-Production At Large-Chi In Psi-(3100) Decay
PHYSICAL REVIEW LETTERS(1980)
摘要
The inclusive ..gamma.. and ..pi../sup 0/ momentum spectra from psi (3100) decay have been measured in e/sup +/e/sup -/ annihilation at SPEAR. When the ..gamma.. spectrum is compared with that expected from ..pi../sup 0/ decay, an excess of high-momentum ..gamma..'s is observed. This excess is compared with that predicted by quantum chromodynamics for the decay of the psi into a ..gamma.. and two gluons.
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关键词
Direct Detection
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