Light mesons at BESIII
نویسندگان
چکیده
منابع مشابه
Screening of light mesons and charmonia at high temperature
We present lattice QCD results for the screening masses of light mesons and charmonia. The lattice computations were performed with 2 + 1 flavors of improved staggered quarks using quark masses which correspond to realistic pion and kaon masses at zero temperature. For the light quark sector we have found that the screening masses in the pseudo-scalar and the isovector scalar channels do not be...
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We review how a certain effective chiral Lagrangian approach to ππ scattering, πK scattering and η → ηππ decay provides evidence for the existence of light scalars σ(550) and κ(900) as well as describing the f0(980) and the a0(980). An attempt to fit these into a nonet suggests that their structure is closer to a dual quark–dual antiquark than to a quark–antiquark. A possible mechanism to expla...
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The crucial points of physics of light scalar mesons are discussed. The special attention is given to the chiral shielding of lightest scalar mesons and the production of the well established light scalar mesons in the φ radiative decays. Arguments in favor of the four-quark model of the a 0 (980) and f 0 (980) mesons are given. To discuss actually the nature of the putative nonet of the light ...
متن کاملHeavy light mesons at a larger lattice spacing
We want to detail our new and as yet preliminary simulation results on the spectrum and the renormalised decay constant of heavy light mesons. They were obtained on coarser lattices compared to previous analyses, see [1] for a review. This allows us to study scaling violations. A second motivation is the possibility of reaching the charm region with NRQCD for D mesons, which have a different po...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2015
ISSN: 2100-014X
DOI: 10.1051/epjconf/20159601034