Inclusive production of vector charmonium in two-photon e + e − annihilation
Alexey Valerievich Luchinsky · Physics of Atomic Nuclei · 2005
One of the processes involving the inclusive production of the vector-charmonium states J/ψ. and ψ(2S) in two-photon electron-positron annihilation at % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9% vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x% fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaaOaaaeaaca% WGZbaaleqaaOGaeyypa0JaaGymaiaaicdacaGGUaGaaGOnaGqaaiaa% -bcacaWFhbGaa8xzaiaa-zfaaaa!3E06! $$\sqrt s = 10.6 GeV$$ is studied on the basis of the singlet model. Analytic expressions are derived for respective differential cross sections, and numerical values of the total cross sections are given, along with graphs that represent the distributions of cross sections in the scattering angle and in the vector-meson energy. It is shown that these distributions differ substantially from the analogous distributions for charmonium production in one-photon electron-positron annihilation. For this reason, the process under consideration can readily be isolated despite the smallness caused by an extra power of α.