Exotic and excited-state meson spectroscopy and radiative transitions from lattice QCD

Christopher E. Thomas (for the Hadron Spectrum collaboration)

doi:10.1088/1674-1137/34/9/087

Chinese Physics C> 2010, Vol. 34> Issue(9) : 1512-1515 DOI: 10.1088/1674-1137/34/9/087

Exotic and excited-state meson spectroscopy and radiative transitions from lattice QCD

Christopher E. Thomas (for the Hadron Spectrum collaboration)

Jefferson Laboratory, 12000 Jefferson Avenue, Suite #1, Newport News, VA 23606, USA

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Abstract：
We discuss recent progress in extracting the excited meson spectrum and radiative transition form factors from lattice QCD. We mention results in the charmonium sector, including the first lattice QCD calculation of radiative transition rates involving excited charmonium states, highlighting results for high spin and exotic states. We present recent results on a highly excited isovector meson spectrum from dynamical anisotropic lattices. Using carefully constructed operators we show how the continuum spin of extracted states can be reliably identified and confidently extract excited states, states with exotic quantum numbers and states of high spin. This spectrum includes the first spin-four state extracted from lattice QCD. We conclude with some comments on future prospects.

References

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. Dudek J J, Edwards R G, Mathur N, Richards D G. Phys.Rev. D, 2008, 77: 034501; arXiv:0707.4162 [hep-lat]2. Dudek J J, Rrapaj E. Phys. Rev. D, 2008, 78: 094504;arXiv:0809.2582 [hep-ph]3. Dudek J J, Edwards R G, Richards D G. Phys. Rev. D,2006, 73: 074507; arXiv:hep-ph/06011374. Dudek J J, Edwards R, Thomas C E. Phys. Rev. D, 2009,79: 094504; arXiv:0902.2241 [hep-ph]5. Dudek J J, Edwards R G, Peardon M J, Richards DG, Thomas C E. Phys. Rev. Lett., 2009, 103: 262001;arXiv:0909.0200 [hep-ph]6. Peardon M et al. Phys. Rev. D, 2009, 80: 054506;arXiv:0905.2160 [hep-lat]7. Johnson R C. Phys. Lett. B, 1982, 114: 1478. Edwards R G, Joo B, LIN H W, Phys. Rev. D, 2008, 78:054501; arXiv:0803.3960 [hep-lat]9. LIN H W et al. Phys. Rev. D, 2009, 79: 034502;arXiv:0810.3588 [hep-lat]10. Luscher M, Wol U. Nucl. Phys. B, 1990, 339: 22211. Blossier B, Della Morte M, von Hippel G, Mendes T, Som-mer R. JHEP, 2009, 04: 094; arXiv:0902.1265 [hep-lat]12. Edwards R G, Joo B (SciDAC collaboration). Nucl. Phys.B. Proc. Suppl., 2005, 140: 832; arXiv:hep-lat/0409003

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Christopher E. Thomas (for the Hadron Spectrum collaboration). Exotic and excited-state meson spectroscopy and radiative transitions from lattice QCD[J]. Chinese Physics C, 2010, 34(9): 1512-1515. doi: 10.1088/1674-1137/34/9/087

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Received: 2010-02-09
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Exotic and excited-state meson spectroscopy and radiative transitions from lattice QCD

Jefferson Laboratory, 12000 Jefferson Avenue, Suite #1, Newport News, VA 23606, USA

Received Date: 2010-02-09

Accepted Date: 1900-01-01

Available Online: 2010-09-05

Abstract:

We discuss recent progress in extracting the excited meson spectrum and radiative transition form factors from lattice QCD. We mention results in the charmonium sector, including the first lattice QCD calculation of radiative transition rates involving excited charmonium states, highlighting results for high spin and exotic states. We present recent results on a highly excited isovector meson spectrum from dynamical anisotropic lattices. Using carefully constructed operators we show how the continuum spin of extracted states can be reliably identified and confidently extract excited states, states with exotic quantum numbers and states of high spin. This spectrum includes the first spin-four state extracted from lattice QCD. We conclude with some comments on future prospects.

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Exotic and excited-state meson spectroscopy and radiative transitions from lattice QCD

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