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Light scalars as tetraquarks: decays and mixing with quarkonia

The tetraquark assignement for light scalar states below 1 GeV is discussed on the light of strong decays. The next-to-leading order in the large-N expansion for the strong decays is considered. Mixing with quarkonia states above 1 GeV is investigated within a chiral approach and the inclusion of finite-width effects is taken into account. Talk given at the International School of Nuclear Physi...

Strange axial-vector mesons mixing angle

The masses of the K1( 3P1) and K1( 1P1) are considered in a nonrelativistic constituent quark model, and the absolute value of the K1( 3P1) −K1(P1) mixing angle is determined to be about 59.29◦. Comparison of the theoretical predictions on the strong decay widths of the K1(1270) and K1(1400) in the 3P0 decay model as well as the production ratio of these two states in the τ decay between the av...

Configuration Mixing in Relativistic Quark Models

Starting from the standard and commonly used relativistic nucleon wave function, we show that residual interactions based on gluon or Goldstone boson exchanges generate additional components leading to configuration mixing. This result suggests that realistic nucleon wave functions can be expected to be far more complex than seemingly successful form factor fits in relativistic quark models wou...

Realistic Interactions and Configuration Mixing in FMD

Neutron Widths and Configuration Mixing in 11Be

We use known widths and branching ratios in 11Be to discuss Jπ and configuration admixtures. Analysis favors 3/2− for the 3.96-MeV state and three-state mixing for this Jπ . Disciplines Physical Sciences and Mathematics | Physics Comments Suggested Citation: H.T. Fortune and R. Sherr. (2011). Neutron widths and configuation mixing in 11Be. Physical Review C, 054314. © 2011 The American Physical...