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Scalar meson spectroscopy with a fine lattice |
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| Authors: | FU Zi-Wen Carleton DeTar Key Laboratory of Radiation Physics Technology Ministry of Education |
| Institution: | FU Zi-Wen 1,1) Carleton DeTar 2,2) 1 Key Laboratory of Radiation Physics and Technology (Sichuan University),Ministry of Education,Institute of Nuclear Science and Technology,Sichuan University,Chengdu 610064,China 2 Physics Department,University of Utah,Salt Lake City,UT 84112,USA |
| Abstract: | With sufficiently light u and d quarks the isovector (a0) and isosinglet (f0) scalar meson propagators are dominated at large distances by two-meson states.In the staggered fermion formulation of lattice QCD,taste-symmetry breaking causes a proliferation of multihadron states that complicates the analysis of these channels.Of special interest is the bubble contribution,which makes a considerable contribution to these channels.Using numerical simulation we have measured the correlators for both a0 and f0 cha... |
| Keywords: | lattice QCD scalar meson bubble contribution |
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