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Observation of a chi(c2)' candidate in gamma gamma --> DD production at belle |
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| Authors: | Uehara S Abe K Abe K Adachi I Aihara H Arinstein K Asano Y Aulchenko V Aushev T Bakich A M Balagura V Barberio E Bedny I Belous K Bitenc U Bizjak I Blyth S Bondar A Bozek A Bracko M Browder T E Chang M-C Chen A Chen W T Cheon B G Chistov R Choi S-K Choi Y Choi Y K Chuvikov A Dalseno J Danilov M Dash M Dragic J Eidelman S Epifanov D Fratina S Gabyshev N Garmash A Gershon T Gokhroo G Gorisek A Ha H C Hayasaka K Hayashii H Hazumi M Hinz L Hoshi Y Hou S Iijima T Inami K Ishikawa A Itoh R Iwasaki M Iwasaki Y Katayama N Kawai H Kawasaki T Kichimi H Kim H J Kim S M Korpar S Krokovny P Kulasiri R |
| Affiliation: | High Energy Accelerator Research Organization (KEK), Tsukuba. |
| Abstract: | We report on a search for new resonant states in the process gamma gamma --> DD. A candidate C-even charmonium state is observed in the vicinity of 3.93 GeV/c2. The production rate and the angular distribution in the gamma gamma center-of-mass frame suggest that this state is the previously unobserved chi(c2)', the 2(3)P2 charmonium state. |
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