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Titolo:
Measurement of the mass and full width of the eta(c) meson - art. no. 072001
Autore:
Bai, JZ; Ban, Y; Bian, JG; Blum, I; Chen, AD; Chen, GP; Chen, HF; Chen, HS; Chen, J; Chen, JC; Chen, XD; Chen, Y; Chen, YB; Cheng, BS; Choi, JB; Cui, XZ; Ding, HL; Dong, LY; Du, ZZ; Dunwoodie, W; Gao, CS; Gao, ML; Gao, SQ; Gratton, P; Gu, JH; Gu, SD; Gu, WX; Guo, YN; Guo, ZJ; Han, SW; Han, Y; Harris, FA; He, J; He, JT; He, KL; He, M; Heng, YK; Hitlin, DG; Hu, GY; Hu, HM; Hu, JL; Hu, QH; Hu, T; Huang, GS; Huang, XP; Huang, YZ; Izen, JM; Jiang, CH; Jin, Y; Jones, BD; Ju, X; Kang, JS; Ke, ZJ; Kelsey, MH; Kim, BK; Kim, HJ; Kim, SK; Kim, TY; Kong, D; Lai, YF; Lang, PF; Lankford, A; Li, CG; Li, D; Li, HB; Li, J; Li, JC; Li, PQ; Li, W; Li, WG; Li, XH; Li, XN; Li, XQ; Li, ZC; Liu, B; Liu, F; Liu, F; Liu, HM; Liu, J; Liu, JP; Liu, RG; Liu, Y; Liu, ZX; Lou, XC; Lowery, B; Lu, GR; Lu, F; Lu, JG; Luo, XL; Ma, EC; Ma, JM; Malchow, R; Mao, HS; Mao, ZP; Meng, XC; Mo, XH; Nie, J; Olsen, SL; Oyang, J; Paluselli, D; Pan, LJ; Panetta, J; Park, H; Porter, F; Qi, ND; Qi, XR; Qian, CD; Qiu, JF; Qu, YH; Que, YK; Rong, G; Schernau, M; Shao, YY; Shen, BW; Shen, DL; Shen, H; Shen, HY; Shen, XY; Shi, F; Shi, HZ; Song, XF; Standifird, J; Suh, JY; Sun, HS; Sun, LF; Sun, YZ; Tang, SQ; Toki, W; Tong, GL; Varner, GS; Wang, F; Wang, L; Wang, LS; Wang, LZ; Wang, P; Wang, PL; Wang, SM; Wang, YY; Wang, ZY; Weaver, M; Wei, CL; Wu, N; Wu, YG; Xi, DM; Xia, XM; Xie, Y; Xie, YH; Xu, GF; Xue, ST; Yan, J; Yan, WG; Yang, CM; Yang, CY; Yang, HX; Yang, W; Yang, XF; Ye, MH; Ye, SW; Ye, YX; Yu, CS; Yu, CX; Yu, GW; Yu, YH; Yu, ZQ; Yuan, CZ; Yuan, Y; Zhang, BY; Zhang, C; Zhang, CC; Zhang, DH; Zhang, DH; Zhang, HL; Zhang, J; Zhang, JW; Zhang, L; Zhang, L; Zhang, LS; Zhang, P; Zhang, QJ; Zhang, SQ; Zhang, XY; Zhang, YY; Zhao, DX; Zhao, HW; Zhao, JW; Zhao, JW; Zhao, M; Zhao, WR; Zhao, ZG; Zheng, JP; Zheng, LS; Zheng, YH; Zheng, ZP; Zhou, BQ; Zhou, L; Zhu, KJ; Zhu, QM; Zhu, YC; Zhu, YS; Zhu, ZA; Zhuang, BA;
Indirizzi:
Inst High Energy Phys, Beijing 100039, Peoples R China Inst High Energy Phys Beijing Peoples R China 100039 39, Peoples R China CALTECH, Pasadena, CA 91125 USA CALTECH Pasadena CA USA 91125CALTECH, Pasadena, CA 91125 USA Chinese Ctr Adv Sci & Technol, Beijing 100087, Peoples R China Chinese CtrAdv Sci & Technol Beijing Peoples R China 100087 les R China Chonbuk Natl Univ, Chonju 561756, South Korea Chonbuk Natl Univ Chonju South Korea 561756 , Chonju 561756, South Korea Colorado State Univ, Ft Collins, CO 80523 USA Colorado State Univ Ft Collins CO USA 80523 niv, Ft Collins, CO 80523 USA Hangzhou Univ, Hangzhou 310028, Peoples R China Hangzhou Univ Hangzhou Peoples R China 310028 ou 310028, Peoples R China Henan Normal Univ, Xinxiang 453002, Peoples R China Henan Normal Univ Xinxiang Peoples R China 453002 53002, Peoples R China Huazhong Normal Univ, Wuhan 430079, Peoples R China Huazhong Normal Univ Wuhan Peoples R China 430079 30079, Peoples R China Korea Univ, Seoul 136701, South Korea Korea Univ Seoul South Korea 136701 orea Univ, Seoul 136701, South Korea Nankai Univ, Tianjin 300071, Peoples R China Nankai Univ Tianjin PeoplesR China 300071 anjin 300071, Peoples R China Peking Univ, Beijing 100871, Peoples R China Peking Univ Beijing PeoplesR China 100871 ijing 100871, Peoples R China Shandong Univ, Jinan 250100, Peoples R China Shandong Univ Jinan PeoplesR China 250100 Jinan 250100, Peoples R China Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China Shanghai Jiao Tong Univ Shanghai Peoples R China 200030 Peoples R China Seoul Natl Univ, Seoul 151742, South Korea Seoul Natl Univ Seoul South Korea 151742 Univ, Seoul 151742, South Korea Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA Stanford Linear Accelerator Ctr Stanford CA USA 94309 nford, CA 94309 USA Univ Hawaii, Honolulu, HI 96822 USA Univ Hawaii Honolulu HI USA 96822Univ Hawaii, Honolulu, HI 96822 USA Univ Calif Irvine, Irvine, CA 92717 USA Univ Calif Irvine Irvine CA USA 92717 Calif Irvine, Irvine, CA 92717 USA Univ Sci & Technol China, Hefei 230026, Peoples R China Univ Sci & TechnolChina Hefei Peoples R China 230026 6, Peoples R China Univ Texas, Richardson, TX 75083 USA Univ Texas Richardson TX USA 75083Univ Texas, Richardson, TX 75083 USA Wuhan Univ, Wuhan 430072, Peoples R China Wuhan Univ Wuhan Peoples R China 430072 v, Wuhan 430072, Peoples R China
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 7, volume: 6207, anno: 2000,
pagine: 2001 -
SICI:
0556-2821(20001001)6207:7<2001:MOTMAF>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
DECAYS; STATE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Bai, JZ Inst High Energy Phys, Beijing 100039, Peoples R China Inst High Energy Phys Beijing Peoples R China 100039 les R China
Citazione:
J.Z. Bai et al., "Measurement of the mass and full width of the eta(c) meson - art. no. 072001", PHYS REV D, 6207(7), 2000, pp. 2001

Abstract

In a sample of 7.8 million J/psi decays collected in the Beijing Spectrometer, the process J/psi --> gamma eta(c) is observed for live different eta(c) decay channels: K+ K- pi(+)pi(-), pi(+)pi(-)pi(+)pi(-), K+/- K(s)(o)pi(-/+) (with K-s(o) --> pi(+)pi(-)), phi phi (with phi-->K+K-) and K(+)K(-)pi(o). From these signals, we determine the mass of eta(c) to be 2976.6+/-2.9 /- 1.3 MeV. Combining this result with a previously reported result from asimilar study using psi(2S)-->gamma eta(c) detected in the same spectrometer gives m(eta c) = 2976.3 +/- 2.3 +/- 1.2 MeV. For the combined samples, we obtain Gamma(eta c) = 11.0 +/- 8.1 +/- 4.1 MeV.

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Documento generato il 29/09/20 alle ore 23:57:36