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A study of meson and baryon decays to strange final states with GlueX in Hall D (A proposal to the 39th Jefferson Lab Program Advisory Committee)

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arxiv 1210.4508 v1 pith:RQVY622R submitted 2012-10-16 hep-ex nucl-ex

The GlueX Collaboration: M. Dugger , B. Ritchie , E. Anassontzis , P. Ioannou , C. Kourkoumeli , G. Voulgaris , N. Jarvis , W. Levine
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P. Mattione C. A. Meyer R. Schumacher P. Collins F. Klein D. Sober D. Doughty A. Barnes R. Jones J. McIntyre F. Mokaya B. Pratt I. Senderovich W. Boeglin L. Guo P. Khetarpal E. Pooser J. Reinhold H. Al Ghoul S. Capstick V. Crede P. Eugenio A. Ostrovidov N. Sparks A. Tsaris D. Ireland K. Livingston D. Bennett J. Bennett J. Frye J. Leckey R. Mitchell K. Moriya M. R. Shepherd A. Szczepaniak R. Miskimen M. Williams P. Ambrozewicz A. Gasparian R. Pedroni T. Black L. Gan J. Dudek F. Close E. Swanson S. Denisov G. Huber S. Katsaganis D. Kolybaba G. Lolos Z. Papandreou A. Semenov I. Semenova M. Tahani W. Brooks S. Kuleshov A. Toro F. Barbosa E. Chudakov H. Egiyan M. Ito D. Lawrence L. Pentchev Y. Qiang E. S. Smith A. Somov S. Taylor T. Whitlatch E. Wolin B. Zihlmann
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classification hep-exnucl-ex
keywords gluexhybriddataidentificationmesonspectrumstatesanalysis
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The primary motivation of the GlueX experiment is to search for and ultimately study the pattern of gluonic excitations in the meson spectrum produced in gamma p collisions. Recent lattice QCD calculations predict a rich spectrum of hybrid mesons that have both exotic and non-exotic JPC, corresponding to q q-bar (q=u, d, or s) states coupled with a gluonic field. A thorough study of the hybrid spectrum, including the identification of the isovector triplet, with charges 0 and +-1, and both isoscalar members, |s s-bar> and |u u-bar> + |d d-bar>, for each predicted hybrid combination of JPC, may only be achieved by conducting a systematic amplitude analysis of many different hadronic final states. We propose the development of a kaon identification system, supplementing the existing GlueX forward time-of-flight detector, in order to cleanly select meson and baryon decay channels that include kaons. Once this detector has been installed and commissioned, we plan to collect a total of 200 days of physics analysis data at an average intensity of 5 x 10^7 tagged photons on target per second. This data sample will provide an order of magnitude statistical improvement over the initial GlueX data set and, with the developed kaon identification system, a significant increase in the potential for GlueX to make key experimental advances in our knowledge of hybrid mesons and Cascade baryons.

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  1. 70 Years of Hyperon Spectroscopy: A review of strange $\Xi$, $\Omega$ baryons, and the spectrum of charmed and bottom baryons

    hep-ex 2025-02 accept novelty 1.0 of 10

    A comprehensive review of the measured spectra of doubly and triply strange hyperons and of charmed and bottom baryons, containing no new measurements or derivations.

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