| Title: | PROTON-ANTIPROTON PAIR PRODUCTION IN TWO-PHOTON COLLISIONS AT BELLE |
| DOI No: | 10.1142/9789812777157_0045 |
| Source: | PHOTON 2001 (pp 227-230)
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| Author(s): | A. CHEN
Physics Dept, National Central University, Chung-li, 320, Taiwan
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| Abstract: | Preliminary result of the proton-antiproton pair production in two-photon collisions at Belle experiment is presented. With high luminosity and good particle identifications measurements of Wγγ and angular dependence cross sections are performed at two-photon center-of-mass energies between 2.00 and 4.00 GeV. Uncertainties due to estimations of trigger and acceptance might have introduced large systematic uncertainty in our cross section calculations. 31.6 fb-1 of data taken with Belle detector does reduce statistical uncertainty for events within 2.00 < W < 4.00 GeV region, where both nonperturbative and perturbative effects are present. This result shows that B factory is an ideal place for QCD study. |
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