Journal article
High-statistics study of K0S pair production in two-photon collisions
S Uehara, Y Watanabe, H Nakazawa, I Adachi, H Aihara, DM Asner, V Aulchenko, T Aushev, AM Bakich, A Bala, V Bhardwaj, B Bhuyan, A Bondar, G Bonvicini, A Bozek, M Bračko, V Chekelian, A Chen, P Chen, BG Cheon Show all
Progress of Theoretical and Experimental Physics | Published : 2013
DOI: 10.1093/ptep/ptt097
Abstract
We report a high-statistics measurement of the differential cross section of the process γγ → K0SK0 S in the range 1.05 GeV ≤ W ≤ 4.00 GeV, where W is the center-of-mass energy of the colliding photons, using 972 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e +e- collider operated at and near the ρ-resonance region. The differential cross section is fitted by parameterized S-, D 0-, D2-, G0-, and G2-wave amplitudes. In the D2 wave, the f2(1270), a 2(1320), and f2′(1525) are dominant and a resonance, the f2(2200), is also present. The f0(1710) and possibly the f0(2500) are seen in the S wave. The mass, total width, and product of the two-photon partial decay wi..
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Awarded by Japan Society for the Promotion of Science
Funding Acknowledgements
We are grateful to V. Chernyak for useful discussions. We thank the KEKB group for the excellent operation of the accelerator, the KEK cryogenics group for the efficient operation of the solenoid, and the KEK computer group and the National Institute of Informatics for valuable computing and SINET3 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council and the Australian Department of Industry, Innovation, Science and Research; the National Natural Science Foundation of China under Contracts No. 10575109, No. 10775142, No. 10875115, and No. 10825524; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea, the CHEP src program and Basic Research program (Grant No. R01-2008-000-10477-0) of the Korea Science and Engineering Foundation; the Polish Ministry of Science and Higher Education; the Ministry of Education and Science of the Russian Federation and the Russian Federal Agency for Atomic Energy; the Slovenian Research Agency; the Swiss National Science Foundation; the National Science Council and the Ministry of Education of Taiwan; and the U.S. Department of Energy. This work is supported by a Grant-in-Aid from MEXT for Science Research in a Priority Area ("New Development of Flavor Physics''), and from JSPS for Creative Scientific Research ("Evolution of Tau-lepton Physics'').