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Production of new charmoniumlike states in e+e- -->J/psiD*D[over](*) at sqrt[s] approximately 10.6 GeV |
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| Authors: | Pakhlov P Adachi I Aihara H Arinstein K Aushev T Aziz T Bakich A M Balagura V Barberio E Bedny I Belous K Bhardwaj V Bitenc U Bondar A Bozek A Bracko M Browder T E Chao Y Chen A Chen K-F Chen W T Cheon B G Chistov R Choi Y Dalseno J Danilov M Dash M Drutskoy A Eidelman S Golob B Ha H Hayasaka K Hazumi M Heffernan D Hoshi Y Hou W-S Hsiung Y B Hyun H J Iijima T Ikado K Inami K Ishikawa A Ishino H Itoh R Iwasaki M Iwasaki Y Kah D H Kang J H Kapusta P Katayama N Kawai H Kawasaki T Kichimi H Kim Y J Kinoshita K Korpar S Krizan P Krokovny P Kumar R Kuo C C Kwon Y-J Lange J S Lee M J Lee S E |
| Affiliation: | Institute for Theoretical and Experimental Physics, Moscow. |
| Abstract: | We report a study of the processes e+e- -->J/psiD*D[over](*). In J/psiD*D[over]* we observe a significant enhancement in the D*D[over]* invariant mass spectrum, which we interpret as a new charmoniumlike state and denote X(4160). The X(4160) parameters are M=(4156(-20)+25+/-15) MeV/c2 and Gamma=(139(-61)+111+/-21) MeV. We also report a new measurement of the X(3940) mass and width: M=(3942(-6)+7+/-6) MeV/c2 and Gamma=(37(-15)+26+/-8) MeV. The analysis is based on a 693 fb(-1) data sample recorded near the Upsilon(4S) resonance by the Belle detector at the KEKB asymmetric-energy collider. |
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