Measurement of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ψ</mml:mi><mml:mn /><mml:mo>(</mml:mo><mml:mn>2</mml:mn><mml:mi>S</mml:mi><mml:mo>)</mml:mo><mml:mn /></mml:math>decays to baryon pairs

Bai, J. Z.; Ban, Y.; Bian, J. G.; Blum, I.; Chen, A. D.; Chen, G. P.; Chen, H. F.; Chen, H. S.; Chen, J.; Chen, J. C.; Chen, X. D.; Chen, Y.; Chen, Y. B.; Cheng, B. S.; Choi, Jong Bum; Cui, X. Z.; Ding, H. L.; Liu, Dong; Du, Z. Z.; Dunwoodie, W.; Gao, C. S.; Gao, M.; Gao, S. Q.; Gratton, P.; Gu, JH; Gu, S.; Gu, W. X.; Guo, Y. N.; Guo, Z. J.; Han, S. W.; Han, Y. L.; Harris, F. A.; He, J.; He, K. L.; He, M.; Heng, Y. K.; Hitlin, D. G.; Hu, G. Y.; Hu, H. M.; Hu, J. L.; Hu, Qin; Hu, T.; Huang, G. S.; Huang, X. P.; Huang, Yizhong; Izen, J. M.; Jiang, C. H.; Jin, Y.; Jones, B. D.; Ju, X.; Kang, J. S.; Ke, Z. J.; Kelsey, M.H.; Kim, B. K.; Kim, H. J.; Kim, S. K.; Kim, T. Y.; Kong, D.; Lai, Y. F.; Lang, P. F.; Lankford, A. J.; Li, C. G.; Li, D.; Li, H. B.; Li, J.; Li, J. C.; Li, P. Q.; Li, W.; Li, W. G.; Li, X. H.; Li, X. N.; Li, X. Q.; Li, Z. C.; Liu, B.; Liu, F.; Liu, Feng; Liu, H. M.; Liu, J.; Liu, J. P.; Liu, R. G.; Liu, Y.; Liu, Z. X.; Lou, X.; Lowery, B.; Lu, G. R.; Lu, F. X.; Lu, J. G.; Luo, X. L.; C., E.; M., J.; Malchow, R.; Mao, H. S.; Mao, Z. P.; Meng, X. C.; Mo, X. H.; Nie, J.; Olsen, S. L.; Oyang, J.; Paluselli, D.; Lu, Pan; Panetta, J.; Park, H.; 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, Hong; Shen, X. Y.; Shi, Feng; Shi, H. Z.; Song, X.; Standifird, J.; Suh, Jung-Min; Sun, H.; Sun, L.; Sun, Y. Z.; Tang, S. Q.; Toki, W. H.; Tong, G. L.; Varner, G.; Wang, F.; Wang, L.; Wang, L. S.; Wang, L. Z.; Wang, P.; Wang, P. L.; Wang, S. M.; Wang, Y. Y.; Wang, Z. Y.; Weaver, M.; Wei, C.; Wu, N.; Wu, Y. G.; Xi, D. M.; Xia, X. M.; Xie, Y.; Xu, G. F.; Xue, S.; Yan, Jun; Yan, W. G.; Yang, C.; Yang, C. Y.; Yang, H. X.; Yang, W. C.; Yang, Xiaofei; Ye, M. H.; Ye, S. W.; Ye, Y. X.; Chen, Yu; Yu, C. X.; Yu, G.; Yu, Y. H.; Z, Yu; Yuan, C. Z.; Yuan, Y.; Zhang, B. Y.; Zhang, C.; Zhang, C. C.; Zhang, D. H.; Zhang, Dehong; Zhang, H. L.; Zhang, J.; Zhang, J. W.; Zhang, L.; Zhang, Lei; Zhang, L. S.; Zhang, P.; Zhang, Q. J.; Zhang, S. Q.; Zhang, X. 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, B.; Li, Zhou; Zhu, K. J.; Zhu, Q. M.; Zhu, Y.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, B. A.

doi:10.1103/physrevd.63.032002

Cited by 14 publications

(2 citation statements)

References 7 publications

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“…The branching fractions for J=ψ decays are in good agreement with the results of BESII [10] and BABAR [12] experiments, and those for ψð3686Þ decays are in agreement with the results of CLEO [9], BESII [11] and Dobbs et al [13] with a maximum of 2 times the standard deviations. The earlier experimental results [5][6][7][8] have significant differences with those of this analysis. The precisions of our branching fraction results are much improved than those of previous experiments listed in Table I.…”

Section: Discussioncontrasting

confidence: 43%

Study of J/ψ and ψ(3686) decay to Λ
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2017
Phys. Rev. D
Self Cite

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Using 1310.6 × 10 6 J=ψ and 447.9 × 10 6 ψð3686Þ events collected with the BESIII detector at the BEPCII e þ e − collider, the branching fractions and the angular distributions of J=ψ and ψð3686Þ decays to ΛΛ and Σ 0Σ0 final states are measured. The branching fractions are determined, with much improved precision, to be 19.43 AE 0.03 AE 0.33, 11.64 AE 0.04 AE 0.23, 3.97 AE 0.02 AE 0.12 and 2.44 AE 0.03 AE 0.11 for J=ψ → ΛΛ, J=ψ → Σ 0Σ0 , ψð3686Þ → ΛΛ and ψð3686Þ → Σ 0Σ0 , respectively. The polar angular distributions of ψð3686Þ decays are measured for the first time, while those of J=ψ decays are measured with much improved precision. In addition, the ratios of branching fractions Bðψð3686Þ→ΛΛÞBðJ=ψ→ΛΛÞ and Bðψð3686Þ→Σ 0Σ0 Þ BðJ=ψ→Σ 0Σ0 Þ are determined to test the "12% rule."

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Section: Discussioncontrasting

confidence: 43%

Study of J/ψ and ψ(3686) decay to Λ
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2017
Phys. Rev. D
Self Cite

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“…Even double-pion production was observed in the reactions ψ → pnπ 0 π + [205]. Moreover, BES has studied the interesting J /ψ and ψ decays into B 8 B8 (p p, n n, ¯ , 0 ¯ 0 , − ¯ + ) [307][308][309][310][311] and ψ → CLEO has recently presented PWA results for the reactions ψ → p pπ 0 and ψ → p pη [29].…”

Section: Observation Of Baryons In J /ψ Decaysmentioning

confidence: 99%

Progress towards understanding baryon resonances

2013

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Abstract. The composite nature of baryons manifests itself in the existence of a rich spectrum of excited states, in particular in the important mass region 1-2 GeV for the light-flavoured baryons. The properties of these resonances can be identified by systematic investigations using electromagnetic and strong probes, primarily with beams of electrons, photons, and pions. After decades of research, the fundamental degrees of freedom underlying the baryon excitation spectrum are still poorly understood. The search for hitherto undiscovered but predicted resonances continues at many laboratories around the world. Recent results from photo-and electroproduction experiments provide intriguing indications for new states and shed light on the structure of some of the known nucleon excitations. The continuing study of available data sets with consideration of new observables and improved analysis tools have also called into question some of the earlier findings in baryon spectroscopy. Other breakthrough measurements have been performed in the heavy-baryon sector, which has seen a fruitful period in recent years, in particular at the B factories and the Tevatron. First results from the LHC indicate rapid progress in the field of bottom baryons. In this review, we discuss the recent experimental progress and give an overview of theoretical approaches.

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Recent ψ(2S) and ηc Results from BES

Harris

2003

Proceedings of the 31st International Conference on High Energy Physics Ichep 2002

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Measurement ofψ(2S)decays to baryon pairs

Cited by 14 publications

References 7 publications

Study of J/ψ and ψ(3686) decay to Λ
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2017
Phys. Rev. D
Self Cite

Study of J/ψ and ψ(3686) decay to Λ
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2017
Phys. Rev. D
Self Cite

Progress towards understanding baryon resonances

Recent ψ(2S) and ηc Results from BES

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Measurement ofψ(2S)decays to baryon pairs

Cited by 14 publications

References 7 publications

Study of J/ψ and ψ(3686) decay to ΛAblikim1, Ачасов2, Ahmed3 et al. 2017Phys. Rev. DSelf Cite

Study of J/ψ and ψ(3686) decay to ΛAblikim1, Ачасов2, Ahmed3 et al. 2017Phys. Rev. DSelf Cite

Progress towards understanding baryon resonances

Recent ψ(2S) and ηc Results from BES

Contact Info

Product

Resources

About

Study of J/ψ and ψ(3686) decay to Λ
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2017
Phys. Rev. D
Self Cite

Study of J/ψ and ψ(3686) decay to Λ
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2017
Phys. Rev. D
Self Cite