• Overview of Chinese core journals
  • Chinese Science Citation Database(CSCD)
  • Chinese Scientific and Technological Paper and Citation Database (CSTPCD)
  • China National Knowledge Infrastructure(CNKI)
  • Chinese Science Abstracts Database(CSAD)
  • JST China
  • SCOPUS
LIU Zhi-Qing. Precise measurement of the Y(4260) particle at the Beijing spectrometer BESIII[J]. PHYSICS, 2017, 46(4): 233-237. DOI: 10.7693/wl20170404
Citation: LIU Zhi-Qing. Precise measurement of the Y(4260) particle at the Beijing spectrometer BESIII[J]. PHYSICS, 2017, 46(4): 233-237. DOI: 10.7693/wl20170404

Precise measurement of the Y(4260) particle at the Beijing spectrometer BESIII

More Information
  • Received Date: February 14, 2017
  • Published Date: April 11, 2017
  • Using 9fb-1 data collected with the BESIII spectrometer at the Beijing Electron Positron Collider II storage ring, the production cross section of the e+e→ππJ/ψ process was measured. We observed the Y(4260) resonance and measured its parameters with the best precision to date in the world. Our measurement shows that the mass of Y(4260) is around 4.22 GeV/c2 and its width is about 44 MeV, which are lower and much narrower, respectively, than previous measurements. BESIII's precise measurement sets a tighter constraint on the interpretation of the Y(4260) internal structure models compared with previous experiments. In ddition, BESIII also observed a new resonance near 4.32 GeV/c2, with a statistical significance of 7.6σ. The mass and width of this resonance agree with the Y(4360) state within experimental error.
  • [1]
    BABAR Collaboration,Aubert B et al. Phys. Rev. Lett.,2005,95:142001
    [2]
    Gell-Mann M. Physics Letters,1964,8:214
    [3]
    Eichten E et al. Phys. Rev. D,1980,21:203;Rev. Mod. Phys.,2008,80:1161;Eichten E,Quigg C. Phys. Rev. D,1995,52:1726
    [4]
    Aubert J J et al. Phys. Rev. Lett.,1974,33:1404;Augustin J E etal. Phys. Rev. Lett.,1974,33:1406
    [5]
    Particle Data Group,Olive K A et al. Chin. Phys. C,2014,38:090001
    [6]
    CLEO Collaboration,He Q et al. Phys. Rev. D,2006,74:091104;Belle Collaboration,Yuan C Z et al. Phys. Rev. Lett.,2007,99:182004
    [7]
    Mo X H et al. Phys. Lett. B,2006,640:182
    [8]
    Barnes T,Close F E,Swanson E S. Phys. Rev. D,1995,52:5242
    [9]
    Hadron Spectrum Collaboration,Liu L et al. J. High Energy Phys.,2012,07:126
    [10]
    Maiani L et al. Phys. Rev. D,2005,72:031502;Ebert D,Faustov R N,Galkin V O. Eur. Phys. J. C,2008,58:399
    [11]
    BESIII Collaboration,Ablikim M et al. Phys. Rev. Lett.,2013,110:252001;Belle Collaboration,Liu Z Q et al. Phys. Rev.Lett.,2013,110:252002;刘智青,沈成平,苑长征. 物理,2013,42:720
    [12]
    Wang Q,Hanhart C,Zhao Q. Phys. Rev. Lett.,2013,111:132003
    [13]
    BESIII Collaboration,Ablikim M et al. Phys. Rev. Lett.,2017,118:092001
    [14]
    BABAR Collaboration,Aubert B et al. Phys. Rev. Lett.,2007,98:212001;Belle Collaboration,Wang X L et al. Phys. Rev.Lett.,2007,99:142002
    [15]
    BESIII Collaboration,Ablikim M et al. Phys. Rev. Lett.,2015,114:092003;Phys. Rev. Lett.,2017,118:092002
  • Related Articles

    [1]CHEN Si-Yuan, HUANG Qing-Guo. The North American Nanohertz Observatory for Gravitational Waves[J]. PHYSICS, 2024, 53(8): 532-540. DOI: 10.7693/wl20240805
    [2]ZHANG Peng-Jie. GW170817 and standard siren cosmology[J]. PHYSICS, 2019, 48(9): 588-592. DOI: 10.7693/wl20190907
    [3]ZHANG Xin-Min, SU Meng, LI Hong, WAN You-Ping, CAI Yi-Fu, LI Ming-Zhe, PIAO Yun-Song. The origin of the universe and the Ali primordial gravitational waves detection[J]. PHYSICS, 2016, 45(5): 320-326. DOI: 10.7693/wl20160506
    [4]ZHANG Shuang-Nan. The black holes in the gravitational event of the Laser Interferometer Gravitational-wave Observatory[J]. PHYSICS, 2016, 45(5): 311-319. DOI: 10.7693/wl20160505
    [5]ZHU Zong-Hong, WANG Yun-Yong. The prediction,detection and discovery of gravitational wave[J]. PHYSICS, 2016, 45(5): 300-310. DOI: 10.7693/wl20160504
    [6]FENG Yan. Laser interferometer gravitational-wave detectors——hearing aids for human on deep universe[J]. PHYSICS, 2016, 45(5): 293-299. DOI: 10.7693/wl20160503
    [7]LI Yong. Gravitational waves: ripples in spacetime and music of the spheres[J]. PHYSICS, 2016, 45(5): 287-292. DOI: 10.7693/wl20160502
    [8]HU Jian-Wei, YANG Run-Qiu, WANG Shao-Jiang, JI Li-Wei. Alexei Starobinsky and inflationary cosmology[J]. PHYSICS, 2015, 44(10): 665-670. DOI: 10.7693/wl20151004
    [9]MA Yin-Zhe. Planck: discovering insight of the Universe[J]. PHYSICS, 2015, 44(03): 137-151. DOI: 10.7693/wl20150301
    [10]The cosmological constant problem[J]. PHYSICS, 2002, 31(08).

Catalog

    Article views PDF downloads Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return