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Study of the hadronic decays of χc states

  • Author(s): Bai, JZ
  • Ban, Y
  • Bian, JG
  • Blum, I
  • Chen, GP
  • Chen, HF
  • Chen, J
  • Chen, JC
  • Chen, Y
  • Chen, YB
  • Chen, YQ
  • Cheng, BS
  • Cui, XZ
  • Ding, HL
  • Dong, LY
  • Du, ZZ
  • Dunwoodie, W
  • Gao, CS
  • Gao, ML
  • Gao, SQ
  • Gratton, P
  • Gu, JH
  • Gu, SD
  • Gu, WX
  • Gu, YF
  • Guo, YN
  • Han, SW
  • Han, Y
  • Harris, FA
  • He, J
  • He, JT
  • He, KL
  • He, M
  • Hitlin, DG
  • Hu, GY
  • Hu, HM
  • Hu, JL
  • Hu, QH
  • Hu, T
  • Hu, XQ
  • Huang, YZ
  • Izen, JM
  • Jiang, CH
  • Jin, Y
  • Jones, BD
  • Ju, X
  • Ke, ZJ
  • Kelsey, MH
  • Kim, BK
  • Kong, D
  • Lai, YF
  • Lang, PF
  • Lankford, A
  • Li, CG
  • Li, D
  • Li, HB
  • Li, J
  • Li, JC
  • Li, PQ
  • Li, RB
  • Li, W
  • Li, WG
  • Li, XH
  • Li, XN
  • Liu, HM
  • Liu, J
  • Liu, RG
  • Liu, Y
  • Lou, XC
  • Lowery, B
  • Lu, F
  • Lu, JG
  • Luo, XL
  • Ma, EC
  • Ma, JM
  • Malchow, R
  • Mao, HS
  • Mao, ZP
  • Meng, XC
  • Nie, J
  • Olsen, SL
  • Oyang, J
  • Paluselli, D
  • Pan, LJ
  • Panetta, J
  • 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, XY
  • Sheng, HY
  • et al.
Abstract

Hadronic decays of the P-wave spin-triplet charmonium states χcJ(J=0,1,2) are studied using a sample of ψ(2S) decays collected by the BES detector operating at the BEPC storage ring. Branching fractions for the decays χc1→Ks0K+π -+c.c., χc0→Ks0Ks0, χc2→Ks0Ks0, χc0→φφ, χc2→φφ and χcJ→K+K-K+K- are measured for the first time, and those for χcJ→π+π-π +π-, χcJ→π+π-K+K -, χcJ→π+π-pp̄ and χcJ →3(π+π-) are measured with improved precision. In addition, we determine the masses of the χc0 and ηc to be Mχc0=3414.1±0.6(stat)±0.8(syst) MeV and Mηc=2975.8±3.9(stat)±1.2(syst) MeV. ©1999 The American Physical Society.

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