학술논문
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)
Document Type
Working Paper
Author
The GlueX Collaboration; Dugger, M.; Ritchie, B.; Anassontzis, E.; Ioannou, P.; Kourkoumeli, C.; Voulgaris, G.; Jarvis, N.; Levine, W.; Mattione, P.; Meyer, C. A.; Schumacher, R.; Collins, P.; Klein, F.; Sober, D.; Doughty, D.; Barnes, A.; Jones, R.; McIntyre, J.; Mokaya, F.; Pratt, B.; Senderovich, I.; Boeglin, W.; Guo, L.; Khetarpal, P.; Pooser, E.; Reinhold, J.; Ghoul, H. Al; Capstick, S.; Crede, V.; Eugenio, P.; Ostrovidov, A.; Sparks, N.; Tsaris, A.; Ireland, D.; Livingston, K.; Bennett, D.; Bennett, J.; Frye, J.; Leckey, J.; Mitchell, R.; Moriya, K.; Shepherd, M. R.; Szczepaniak, A.; Miskimen, R.; Williams, M.; Ambrozewicz, P.; Gasparian, A.; Pedroni, R.; Black, T.; Gan, L.; Dudek, J.; Close, F.; Swanson, E.; Denisov, S.; Huber, G.; Katsaganis, S.; Kolybaba, D.; Lolos, G.; Papandreou, Z.; Semenov, A.; Semenova, I.; Tahani, M.; Brooks, W.; Kuleshov, S.; Toro, A.; Barbosa, F.; Chudakov, E.; Egiyan, H.; Ito, M.; Lawrence, D.; Pentchev, L.; Qiang, Y.; Smith, E. S.; Somov, A.; Taylor, S.; Whitlatch, T.; Wolin, E.; Zihlmann, B.
Source
Subject
Language
Abstract
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.
Comment: 20 pages, 9 figures (submitted to the 39th Jefferson Lab PAC)
Comment: 20 pages, 9 figures (submitted to the 39th Jefferson Lab PAC)