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2024年10月30日

Oddball Y(4140) as the molecular cousin of Y(3930)

  • In my talk, we present the dynamical study of Y(4140) and Y(3930) under the Ds*Ds* and D*D* molecular assignments respectively. The importance to theoretically and experimentally study their open-charm decay, hidden-charm decay, radiative decay and double-photon decay is proposed combing with the theoretical calculation of the decay behavior of Y(4140) and Y(3930). According to the recent new experimental progress made by Belle, we further indicate the reasonability of molecular explanation to Y(4140). Another event cluster around 4270 MeV in the J/ψφ invariant mass spectrum of B→K J/ψφ can provide us more hints to reveal the creation mechanism of molecular structure in B meson decay, which will be helpful to clarify the underlying structure of Y(4140) and Y(3930).

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  • [1] . Aaltonen T et al (CDF collaboration), Phys. Rev. Lett.2009, 102: 242002 [arXiv:0903.2229 [hep-ex]]2. Abe K et al (Belle collaboration), Phys. Rev. Lett. 2005,94: 182002 [arXiv:hep-ex/0408126]3. Aubert B et al (BABAR collaboration), Phys. Rev. Lett.2008, 101: 082001 [arXiv:0711.2047 [hep-ex]]4. LIU X, ZHU S L. Phys. Rev. D, 2009, 79: 094026[arXiv:0903.2529 [hep-ph]]5. LIU X, LUO Z G, LIU Y R, ZHU S L. Eur. Phys. J. C,2009, 61: 411-428 [arXiv:0808.0073 [hep-ph]]6. Mahajan N. Phys. Lett. B, 2009, 679: 228 [arXiv:0903.3107[hep-ph]]7. Branz T, Gutsche T, Lyubovitskij V E. Phys. Rev. D, 2009,80: 054019 [arXiv:0903.5424 [hep-ph]]8. Albuquerque R M, Bracco M E, Nielsen M. Phys. Lett. B,2009, 678: 186 [arXiv:0903.5540 [hep-ph]]9. DING G J. Eur. Phys. J. C, 2009, 64: 297 [arXiv:0904.1782[hep-ph]]10. ZHANG J R, HUANG M Q. arXiv:0905.4178 [hep-ph]11. LIU X. Phys. Lett. B, 2009, 680: 137 [arXiv:0904.0136[hep-ph]]12. LIU X, KE H W. Phys. Rev. D, 2009, 80: 034009 [arXiv:0907.1349 [hep-ph]]13. YUAN C Z. arXiv:0910.3138 [hep-ex]14. Pakhlova G, (Belle collaboration). talk given in The 5-thInternational Conference on Quarks and Nuclear Physics,Institue of High Energy Physics, Beijing, 21-26 September 200915. SHEN C P (Belle collaboration). talk given in InternationalWorkshop on e+e.. collisions from phi to psi (PHIPSI09),Institue of High Energy Physics, Beijing, China, 12-16 Oc-tober 200916. Uehara S et al (Belle collaboration). Phys. Rev. Lett. 2006,96: 082003 [arXiv:hep-ex/0512035]17. LIU X, LUO Z G, SUN Z F. arXiv:0911.3694 [hep-ph]18. YI K. arXiv:0906.4996 [hep-ex]
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Get Citation
LIU Xiang. Oddball Y(4140) as the molecular cousin of Y(3930)[J]. Chinese Physics C, 2010, 34(9): 1405-1407. doi: 10.1088/1674-1137/34/9/055
LIU Xiang. Oddball Y(4140) as the molecular cousin of Y(3930)[J]. Chinese Physics C, 2010, 34(9): 1405-1407.  doi: 10.1088/1674-1137/34/9/055 shu
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Received: 2010-02-09
Revised: 1900-01-01
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Oddball Y(4140) as the molecular cousin of Y(3930)

    Corresponding author: LIU Xiang,
  • 1 School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China2 Research Center for Hadron and CSR Physics, Lanzhou University & Institute of Modern Physics of CAS, Lanzhou 730000, China

Abstract: 

In my talk, we present the dynamical study of Y(4140) and Y(3930) under the Ds*Ds* and D*D* molecular assignments respectively. The importance to theoretically and experimentally study their open-charm decay, hidden-charm decay, radiative decay and double-photon decay is proposed combing with the theoretical calculation of the decay behavior of Y(4140) and Y(3930). According to the recent new experimental progress made by Belle, we further indicate the reasonability of molecular explanation to Y(4140). Another event cluster around 4270 MeV in the J/ψφ invariant mass spectrum of B→K J/ψφ can provide us more hints to reveal the creation mechanism of molecular structure in B meson decay, which will be helpful to clarify the underlying structure of Y(4140) and Y(3930).

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