A study of decays to strange final states with GlueX in Hall D using components of the BaBar DIRC

Collaboration, The GlueX; Dugger, M.; Ritchie, B.G.; Senderovich, I.; Anassontzis, E.; Ioannou, P.; Kourkoumeli, C.; Vasileiadis, G.; Voulgaris, G.; Jarvis, N. S.; Levine, W. I.; Mattione, P.; McGinley, W.; Meyer, Chris; Schumacher, R.A.; Staib, M. J.; Klein, François; Sober, D. I.; Sparks, N. A.; Walford, N. K.; Doughty, D.; Barnes, A. V.; Jones, Rwl; McIntyre, Justin I.; Mokaya, F.; Pratt, B.; Boeglin, W.; Guo, Lijia; Pooser, E.; Reinhold, J.; Ghoul, H. Al; Credé, V.; Eugenio, P.; Ostrovidov, A. I.; Tsaris, Aristeidis; Ireland, D.; Livingston, K.; Bennett, Daniel; Bennett, J. V.; Frye, J.; Lara, M.; Leckey, J.; Mitchell, R. E.; Moriya, K.; Shepherd, M. R.; Chernyshov, Oleksii O.; Dolgolenko, A.; Герасимов, А. С.; Goryachev, V. N.; Larin, I.; Matveev, V.; Tarasov, V. V.; Barbosa, Fernando; Chudakov, E.; Dalton, M. M.; Deur, A.; Dudek, Jo; Egiyan, H.; Furletov, S.; Ito, M. M.; Mack, D.; Lawrence, D.; McCaughan, M.; Pennington, M.R.; Pentchev, L.; Qiang, Y.; Smith, Elizabeth A. T.; Somov, A.; Taylor, S. Elwynn; Whitlatch, T.; Zihlmann, B.; Miskimen, R.; Guegan, B.; Hardin, John; Stevens, J. R.; Williams, M.; Бердников, В. В.; Nigmatkulov, G.; Ponosov, A. A.; Romanov, Dmitry; Somov, S.; Tolstukhin, I.; Salgado, C.; Ambrozewicz, P.; Gasparian, A.P.; Pedroni, R.; Black, T.; Gan, L.; Dobbs, S.; Seth, K. K.; Ting, X.; Tomaradze, A.; Beattie, T. D.; Huber, Garth; Lolos, G. J.; Papandreou, Z.; Semenov, A.; Семенова, И. А.; Brooks, W. K.; Kuleshov, S.; Soto, Orlando; Toro, A.; Vega, Inés de; Gevorgyan, N.; Hakobyan, H.; Kakoyan, V.

doi:10.48550/arxiv.1408.0215

Cited by 10 publications

(12 citation statements)

References 21 publications

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“…The results strongly disfavored a model variant that includes significant contributions from the Σ(2030) 7 2 + . While precisely distinguishing between current and future model variants to determine the role of high-spin excited hyperons and the contributions from scalar vector exchange mechanisms will be left to future experiments at CLAS12 and GlueX [47], we have made the first step toward a detailed understanding of Ξ − photoproduction.…”

Section: Discussionmentioning

confidence: 99%

First measurement of Ξ− polarization in photoproduction

et al. 2018

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Despite decades of studies of the photoproduction of hyperons, both their production mechanisms and their spectra of excited states are still largely unknown. While the parity-violating weak decay of hyperons offers a means of measuring their polarization, which could help discern their production mechanisms and identify their excitation spectra, no such study has been possible for doubly strange baryons in photoproduction, due to low production cross sections. However, by making use of the reaction γp → K + K + Ξ − , we have measured, for the first time, the induced polarization, P, and the transferred polarization from circularly polarized real photons, characterized by C x and C z , to recoiling Ξ − s. The data were obtained using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab for photon energies from just over threshold (2.4 GeV) to 5.45 GeV. These first-time measurements are compared, and are shown to broadly agree, with model predictions in which cascade photoproduction proceeds through the decay of intermediate hyperon resonances that are produced via relativistic meson exchange, offering a new step forward in the understanding of the production and polarization of doubly-strange baryons.

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Section: Discussionmentioning

confidence: 99%

First measurement of Ξ− polarization in photoproduction

et al. 2018

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“…The GlueX [201,202,203] and CLAS12 MesonEx [204] experiments provide a unique contribution to the landscape of experimental meson spectroscopy through the novel photoproduction mechanism, which has previously been relatively unexplored. Utilizing a real, linearly-polarized photon beam in GlueX and quasi-real, low-Q 2 photons in CLAS12, this program covers a wide range of beam energies from E γ = 3 − 12 GeV.…”

Section: Experimental Meson Spectroscopy Programmentioning

confidence: 99%

“…Finally, many hyperon spectroscopy measurements are expected from the GlueX and CLAS12 experiments, where the associated production of kaons allows one to study baryons with net strangeness including the Ξ and Ω [202,225]. However, this program will be expanded by proposal to perform hyperon spectroscopy with a neutral kaon beam in Hall D, which was recently approved by the PAC [226].…”

Section: Experimental Baryon Spectroscopy Programmentioning

confidence: 99%

Physics with CEBAF at 12 GeV and Future Opportunities

Arrington¹,

Battaglieri²,

Boehnlein³

et al. 2021

Preprint

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We summarize the ongoing scientific program of the 12 GeV Continuous Electron Beam Accelerator Facility (CE-BAF) and give an outlook into future scientific opportunities. The program addresses important topics in nuclear, hadronic, and electroweak physics including nuclear femtography, meson and baryon spectroscopy, quarks and gluons in nuclei, precision tests of the standard model, and dark sector searches. Potential upgrades of CEBAF are considered, such as higher luminosity, polarized and unpolarized positron beams, and doubling the beam energy.

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“…The GlueX Central Drift Chamber (CDC) is part of the GlueX experiment in Hall D at Thomas Jefferson National Accelerator Facility in Newport News, VA. This experiment [1,2,3,4] aims to study the gluonic field in Quantum Chromo Dynamics (QCD) by searching for hybrid mesons with gluonic degrees of freedom and exotic quantum numbers [5,6]. Such states are expected in the mass range within reach for GlueX [7].…”

Section: Introductionmentioning

confidence: 99%

The Central Drift Chamber for GlueX

Jarvis

Meyer

Zihlmann

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

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The Central Drift Chamber is a straw-tube wire chamber of cylindrical structure located surrounding the target inside the bore of the GlueX spectrometer solenoid. Its purpose is to detect and track charged particles with momenta as low as 0.25 GeV/c as well as to identify low-momentum protons via energy loss. The construction of the detector is described and its operation and calibration are discussed in detail. The design goal of 150 µm in position resolution has been reached.

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A study of decays to strange final states with GlueX in Hall D using components of the BaBar DIRC

Cited by 10 publications

References 21 publications

First measurement of Ξ− polarization in photoproduction

First measurement of Ξ− polarization in photoproduction

Physics with CEBAF at 12 GeV and Future Opportunities

The Central Drift Chamber for GlueX

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