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arXiv · 1707.05284

Strange Hadron Spectroscopy with a Secondary KL Beam at GlueX

M. J. Amaryan·M. Bashkanov·J. Ritman·J. R. Stevens·I. Strakovsky·GlueX Collaboration
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Abstract

We propose to create a secondary beam of neutral kaons in Hall D at Jefferson Lab to be used with the GlueX experimental setup for strange hadron spectroscopy. A flux on the order of 3 x 10^4 KL/s will allow a broad range of measurements to be made by improving the statistics of previous data obtained on hydrogen targets by three orders of magnitude. Use of a deuteron target will provide first measurements on the neutron which is {\it terra incognita}. The experiment will measure both differential cross sections and self-analyzed polarizations of the produced {\Lambda}, {\Sigma}, {\Xi}, and {\Omega} hyperons using the GlueX detector at the Jefferson Lab Hall D. The measurements will span c.m. cos{\theta} from -0.95 to 0.95 in the c.m. range above W = 1490 MeV and up to 3500 MeV. These new GlueX data will greatly constrain partial-wave analyses and reduce model-dependent uncertainties in the extraction of strange resonance properties (including pole positions), and provide a new benchmark for comparisons with QCD-inspired models and lattice QCD calculations. The proposed facility will also have an impact in the strange meson sector by providing measurements of the final-state K{\pi} system from threshold up to 2 GeV invariant mass to establish and improve on the pole positions and widths of all K*(K{\pi}) P-wave states as well as for the S-wave scalar meson {\kappa}(800).

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M. J. Amaryan, M. Bashkanov, J. Ritman, J. R. Stevens, I. Strakovsky, GlueX Collaboration. 2017-07-17. Strange Hadron Spectroscopy with a Secondary KL Beam at GlueX. https://arxiv.org/abs/1707.05284

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