Study of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">P</mml:mi></mml:math>-Wave Charmonium State<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>χ</mml:mi></mml:mrow><mml:mrow><mml:mi>cJ</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">ψ</mml:mi><mml:mo>(</mml:mo><mml:mn>2</mml

Bai, J. Z.; Bian, J. G.; Blum, I.; Chai, Z.; Chen, G. P.; Chen, H. F.; Chen, J.; Chen, J. C.; Chen, Y.; Chen, Y. B.; Chen, Y. Q.; Cheng, B. S.; Cui, X. Z.; Ding, H. L.; Ding, L.; Liu, Dong; Du, Z. Z.; Dunwoodie, W.; Feng, S. H.; Gao, C. S.; Gao, M.; Gao, S. Q.; Gratton, P.; Gu, JH; Gu, S.; Gu, W. X.; Gu, Y. F.; Guo, Y. N.; Han, S. W.; Han, Y. L.; Harris, F. A.; He, J.; He, J.; He, Miao; Hitlin, D. G.; Hu, G. Y.; Hu, H. M.; Hu, J. L.; Hu, Qin; Hu, T.; Hu, X. Q.; Huang, J. D.; Huang, Yizhong; Izen, J. M.; Jiang, C. H.; Jin, Y.; Ke, Z. J.; Kelsey, M. H.; Kim, B. K.; Kong, D.; Lai, Y. F.; Lang, P. F.; Lankford, A. J.; Li, C. G.; Li, D.; Li, Hailin; Li, J.; Li, Peiyao; Li, R. B.; Li, W.; Li, W. D.; Li, W. G.; Li, X. H.; Li, X. N.; Liu, H. M.; Liu, J.; Liu, J. H.; Liu, R. G.; Liu, Y.; Lou, X. C.; Lowery, B.; Lu, F. X.; Lu, J. G.; Lu, Jie; Lu, L. C.; Luo, C. H.; M., A.; C., E.; M., J.; Malchow, R.; Mao, H. S.; Mao, Z. P.; Meng, X. C.; Nie, J.; Olsen, S. L.; Oyang, J.; Paluselli, D.; Lu, Pan; Panetta, J.; Porter, F. C.; Qi, N. D.; Qi, X. R.; Qian, C. D.; Qiu, J. F.; Qu, Y. H.; Que, Y. K.; Rong, G.; Schernau, M.; Shao, Y.; Shen, B. W.; Shen, D. L.; Shen, H. F.; Shen, X. Y.; Sheng, H. Y.; Shi, H. Z.; Song, X.; Standifird, J.; Sun, F.; Sun, H.; Tang, S. Q.; Toki, W. H.; Tong, G. L.; Varner, G.; Wang, F.; Wang, L. S.; Wang, L. Z.; Wang, M.; Wang, Meng; Wang, P.; Wang, P. L.; Wang, S. M.; Wang, T. J.; Wang, Y. Y.; Weaver, M.; Wei, C.; Wu, Y. G.; Xi, D. M.; Xia, X. M.; Xie, P. P.; Xie, Y.; Xie, Y.; Xiong, W.; Xu, C.; Xu, G. F.; Xue, S.; Yan, Jun; Yan, W. G.; Yang, C.; Yang, C. Y.; Yang, J.; Yang, W. C.; Yang, Xiaofei; Ye, M. H.; Ye, S. W.; Ye, Y. X.; Yi, K.; Chen, Yu; Yu, C. X.; Yu, Y. H.; Z, Yu; Yu, Z.; Yuan, C. Z.; Yuan, Y.; Zhang, B. Y.; Zhang, C. C.; Zhang, D. H.; Zhang, Dehong; Zhang, H. L.; Zhang, J.; Zhang, J. L.; Zhang, J. W.; Zhang, L. S.; Zhang, Q. J.; Zhang, S. Q.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. Y.; Zhao, Dongxu; Zhao, H. W.; Zhao, Jiawei; Zhao, M. G.; Zhao, W. R.; Zhao, Z. G.; Zheng, J. P.; Zheng, Lei; Zheng, Z. P.; Zhou, G. P.; Zhou, Hai-Qing; Li, Zhou; Zhu, Q. M.; Zhu, Y.; Zhu, Y. S.; Zhuang, B. A.

doi:10.1103/physrevlett.81.3091

Cited by 33 publications

(20 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The precision of this measurement represents a substantial improvement over the existing PDG value of 3417.3 ± 2.8 [2]. BES also determined the χ c0 total width [14], Γ(χ c0 ) = 14.3±2.0±3.0 MeV, by selecting a π + π − event sample, using the precisely measured total width of the χ c2 [2] to determine the detector resolution and a MC simulation to determine how the resolution changes from M (χ c2 ) to M (χ c0 ). Compared with the only existing result of Crystal Ball [15], Γ(χ c0 ) = 13.5 ± 3.3 ± 4.2 MeV, which is actually a combination of two measurements with large errors and of only marginal consistency (within 2.2σ), the uncertainty is now reduced from 40% to 25%.…”

Section: 3 S 1 : J/ψmentioning

confidence: 79%

Charmonium decay physics

Tuan

2000

Nuclear Physics A

View full text Add to dashboard Cite

show abstract

Section: 3 S 1 : J/ψmentioning

confidence: 79%

Charmonium decay physics

Tuan

2000

Nuclear Physics A

View full text Add to dashboard Cite

show abstract

“…The mass differences between χ c0,1,2 and between η c and J/ψ reflect the hyperfine structure of the spin-spin interactions, the χ c1,2 and J/ψ masses have been precisely determined. BES improves [13] the χ c0 mass with (3414.1 ± 0.6 ± 0.8) MeV over PDG98 value with an error of 2.8 MeV, and χ c0 decay width with Γ χ c0 = (14.3 ± 3.6) MeV over PDG98 value (13.5 ± 5.3 MeV). Fig.…”

Section: Hadronic χ Cj Decaysmentioning

confidence: 80%

“…The (3.79 ± 0.31) × 10 6 ψ ′ sample permits studies of χ cJ with unprecedented precision (∼ 1.0 × 10 6 χ ′ s). Table 2 shows the results of χ cJ decays [13,14]. From the table, the measurement precision is improved much, and many decay modes are presented first time, like χ c0 → pp [13].…”

Section: Hadronic χ Cj Decaysmentioning

confidence: 99%

“…Table 2 shows the results of χ cJ decays [13,14]. From the table, the measurement precision is improved much, and many decay modes are presented first time, like χ c0 → pp [13]. The results of the neutral decays are preliminary.…”

Section: Hadronic χ Cj Decaysmentioning

confidence: 99%

“…Fig. 2 shows χ cJ hadronic decays [13,14]. From ψ ′ radiative transition to η c , BES gives the η c mass with (2975.8 ± 3.9 ± 1.2) MeV [14].…”

Section: Hadronic χ Cj Decaysmentioning

confidence: 99%

See 2 more Smart Citations

Recent ψ′ results at BES

Liu

2000

Nuclear Physics A

View full text Add to dashboard Cite

Based on (3.79 ± 0.31) × 10 6 ψ ′ data sets collected with the BES detector at BEPC, the recent ψ ′ , χ cJ and η c results from BES are presented. Some results are compared with NRQCD. Studies of ψ ′ DecaysCharmonium physics is always one of the interesting and intriguing fields of particle physics. Charmonium provides us an excellent and simple system to study QCD, the production and decay mechanisms of heavy quarkonia and light hadron spectra from its decays, and can be treated nonrelativistically and perturbatively. Using (3.79 ± 0.31) × 10 6 ψ ′ sample collected with the BEijing Spectrometer (BES) at BEPC, the recent ψ ′ , χ c and η c results are presented. The BES detector is described in detail in Ref. [1].Out of the charmonium decays, there exists a mysterious and longstanding ρπ puzzle of J/ψ and ψ ′ decays [2], first revealed by Mark-II Collaboration. In QCD, both ψ ′ and J/ψ decays are expected to be dominated by annihilations into three gluons. Based on the similarity between the ψ ′ and J/ψ wave functions and the slow running of the strong interaction coupling constant α s , the non-relativistic perturbative QCD predicts [3]: the ratios of the decays widths of ψ ′ into hadrons to those of J/ψ into hadrons are:= (14.7 ± 2.3)% named as the "14%" rule. Mark II first observed the vector-pseudoscalar (V for vector, P pseudoscalar, B baryon, A axial-vector and T tensor) ρπ and K

show abstract

Color octet contribution in exclusive P-wave charmonium decay into octet and decuplet baryons

Wong

2000

Eur. Phys. J. C

View full text Add to dashboard Cite

In the last years, the need of the colour octet state in inclusive P-wave charmonium decay has been firmly established. However, the implications of this in the corresponding exclusive reactions have not been fully recognized. We argue for the necessity of the colour octet in P-and higher-wave quarkonium decay. Using a set of phenomenologically constructed baryon wavefunctions, we consider the χ J decay into octet and decuplet baryon-antibaryon pair. By doing so, we subject the wavefunctions to a test of applicability. We show that the colour singlet component alone is insufficient to account for experimental measurements and only by including the colour octet contribution can the partial theoretical decay widths be brought into range of the data. By the present and earlier applications of the set of wavefunctions, they show themselves to be reasonable model wavefunctions at around the scale Q 2 ∼ 10-20 GeV 2 .

show abstract

Study of theP-Wave Charmonium StateχcJinψ(2

Cited by 33 publications

References 18 publications

Charmonium decay physics

Charmonium decay physics

Recent ψ′ results at BES

Color octet contribution in exclusive P-wave charmonium decay into octet and decuplet baryons

Contact Info

Product

Resources

About