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  • Observation of a broad 1 - Resonant structure around 1.5GeV/c2 in the K+K- Mass spectrum in J/ψ → K+K-π0

    • 摘要:

      A broad peak is observed at low K+K- invariant mass in J/ψ → K+K-π0 decays found in a sample of 5.8 × 107 J/ψ events collected with the BESII detector. The statistical significance of the broad resonance is much larger than 5. A partial wave analysis shows that the JPC of this structure is 1 - . Its pole position is determined to be [1576-55+49(stat)-91+98(syst)] MeV/c2-i2[818-23+22(stat)-133+64(syst)]MeV/c2. These parameters are not compatible with any known meson resonances.

    • 作者:

      M. Ablikim;J. Z. Bai;Y. Ban;X. Cai;H. F. Chen;H. S. Chen;H. X. Chen;J. C. Chen;J. Chen;Y. B. Chen;S. P. Chi;Y. P. Chu;X. Z. Cui;Y. S. Dai;Z. Y. Deng;燎原 董;Q. F. Dong;S. X. Du;Z. Z. Du;J. Fang;双世 房;C. D. Fu;C. S. Gao;Y. N. Gao;S. D. Gu;Y. T. Gu;Y. N. Guo;Y. Q. Guo;Z. J. Guo;F. A. Harris;K. L. He;M. He;Y. K. Heng;H. M. Hu;T. Hu;G. S. Huang;X. P. Huang;X. T. Huang;X. B. Ji;X. S. Jiang;J. B. Jiao;D. P. Jin;S. Jin;Y. Jin;Y. F. Lai;钢 李;海波 李;H. H. Li;J. Li;R. Y. Li;S. M. Li;卫东 李;W. G. Li;X. L. Li;X. Q. Li;Y. L. Li;Y. F. Liang;H. B. Liao;C. X. Liu;F. Liu;F. Liu;H. H. Liu;H. M. Liu;J. Liu;J. B. Liu;觉平 刘;R. G. Liu;Z. A. Liu;F. Lu;G. R. Lu;H. J. Lu;J. G. Lu;C. L. Luo;凤才 马;H. L. Ma;L. L. Ma;Q. M. Ma;X. B. Ma;Z. P. Mao;X. H. Mo;J. Nie;S. L. Olsen;H. P. Peng;N. D. Qi;H. Qin;J. F. Qiu;Z. Y. Ren;建国 陈;L. Y. Shan;L. Shang;D. L. Shen;肖雁 沈;H. Y. Sheng;F. Shi;X. Shi;H. S. Sun;J. F. Sun;S. S. Sun;Y. Z. Sun;Z. J. Sun;Z. Q. Tan;X. Tang;Y. R. Tian;G. L. Tong;G. S. Varner;D. Y. Wang;L. Wang;L. S. Wang;萌 王;平 王;P. L. Wang;W. F. Wang;贻芳 王;政 王;志勇 汪;Z. Wang;Z. Wang;C. L. Wei;D. H. Wei;N. Wu;X. M. Xia;X. X. Xie;B. Xin;G. F. Xu;Y. Xu;M. L. Yan;F. Yang;H. X. Yang;J. Yang;Y. X. Yang;铭汉 叶;Y. X. Ye;Z. Y. Yi;G. W. Yu;长征 苑;J. M. Yuan;Y. Yuan;S. L. Zang;Y. Zeng;Y. Zeng;B. X. Zhang;B. Y. Zhang;C. C. Zhang;D. H. Zhang;H. Y. Zhang;J. W. Zhang;J. Y. Zhang;Q. J. Zhang;X. M. Zhang;X. Y. Zhang;Y. Y. Zhang;Z. P. Zhang;晴 张;D. X. Zhao;J. W. Zhao;M. G. Zhao;P. P. Zhao;W. R. Zhao;Z. G. Zhao;汉青 郑;J. P. Zheng;Z. P. Zheng;L. Zhou;N. F. Zhou;K. J. Zhu;Q. M. Zhu;Y. C. Zhu;Y. Zhu;Y. S. Zhu;Z. A. Zhu;B. A. Zhuang;X. A. Zhuang;冰松 邹

    • 刊名:

      Physical Review Letters

    • 在线出版时间:

      2006