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1. First Results from The GlueX Experiment

Author

The GlueX Collaboration, Ghoul, H. Al, Anassontzis, E. G., Barbosa, F., Barnes, A., Beattie, T. D., Bennett, D. W., Berdnikov, V. V., Black, T., Boeglin, W., Brooks, W. K., Cannon, B., Chernyshov, O., Chudakov, E., Crede, V., Dalton, M. M., Deur, A., Dobbs, S., Dolgolenko, A., Dugger, M., Egiyan, H., Eugenio, P., Foda, A. M., Frye, J., Furletov, S., Gan, L., Gasparian, A., Gerasimov, A., Gevorgyan, N., Goryachev, V. S., Guegan, B., Guo, L., Hakobyan, H., Hakobyan2, H., Hardin, J., Huber, G. M., Ireland, D., Ito, M. M., Jarvis, N. S., Jones, R. T., Kakoyan, V., Kamel, M., Klein, F. J., Kourkoumeli, C., Kuleshov, S., Lara, M., Larin, I., Lawrence, D., Leckey, J., Levine, W. I., Livingston, K., Lolos, G. J., Mack, D., Mattione, P. T., Matveev, V., McCaughan, M., McGinley, W., McIntyre, J., Mendez, R., Meyer, C. A., Miskimen, R., Mitchell, R. E., Mokaya, F., Moriya, K., Nigmatkulov, G., Ochoa, N., Ostrovidov, A. I., Papandreou, Z., Pedroni, R., Pennington, M., Pentchev, L., Ponosov, A., Pooser, E., Pratt, B., Qiang, Y., Reinhold, J., Ritchie, B. G., Robison, L., Romanov, D., Salgado, C., Schumacher, R. A., Semenov, A. Yu., Semenova, I. A., Senderovich, I., Seth, K. K., Shepherd, M. R., Smith, E. S., Sober, D. I., Somov, A., Somov, S., Soto, O., Sparks, N., Staib, M. J., Stevens, J. R., Subedi, A., Tarasov, V., Taylor, S., Tolstukhin, I., Tomaradze, A., Toro, A., Tsaris, A., Vasileiadis, G., Vega, I., Voulgaris, G., Walford, N. K., Whitlatch, T., Williams, M., Wolin, E., Xiao, T., Zarling, J., Zihlmann, B., The GlueX Collaboration, Ghoul, H. Al, Anassontzis, E. G., Barbosa, F., Barnes, A., Beattie, T. D., Bennett, D. W., Berdnikov, V. V., Black, T., Boeglin, W., Brooks, W. K., Cannon, B., Chernyshov, O., Chudakov, E., Crede, V., Dalton, M. M., Deur, A., Dobbs, S., Dolgolenko, A., Dugger, M., Egiyan, H., Eugenio, P., Foda, A. M., Frye, J., Furletov, S., Gan, L., Gasparian, A., Gerasimov, A., Gevorgyan, N., Goryachev, V. S., Guegan, B., Guo, L., Hakobyan, H., Hakobyan2, H., Hardin, J., Huber, G. M., Ireland, D., Ito, M. M., Jarvis, N. S., Jones, R. T., Kakoyan, V., Kamel, M., Klein, F. J., Kourkoumeli, C., Kuleshov, S., Lara, M., Larin, I., Lawrence, D., Leckey, J., Levine, W. I., Livingston, K., Lolos, G. J., Mack, D., Mattione, P. T., Matveev, V., McCaughan, M., McGinley, W., McIntyre, J., Mendez, R., Meyer, C. A., Miskimen, R., Mitchell, R. E., Mokaya, F., Moriya, K., Nigmatkulov, G., Ochoa, N., Ostrovidov, A. I., Papandreou, Z., Pedroni, R., Pennington, M., Pentchev, L., Ponosov, A., Pooser, E., Pratt, B., Qiang, Y., Reinhold, J., Ritchie, B. G., Robison, L., Romanov, D., Salgado, C., Schumacher, R. A., Semenov, A. Yu., Semenova, I. A., Senderovich, I., Seth, K. K., Shepherd, M. R., Smith, E. S., Sober, D. I., Somov, A., Somov, S., Soto, O., Sparks, N., Staib, M. J., Stevens, J. R., Subedi, A., Tarasov, V., Taylor, S., Tolstukhin, I., Tomaradze, A., Toro, A., Tsaris, A., Vasileiadis, G., Vega, I., Voulgaris, G., Walford, N. K., Whitlatch, T., Williams, M., Wolin, E., Xiao, T., Zarling, J., and Zihlmann, B.

Abstract

The GlueX experiment at Jefferson Lab ran with its first commissioning beam in late 2014 and the spring of 2015. Data were collected on both plastic and liquid hydrogen targets, and much of the detector has been commissioned. All of the detector systems are now performing at or near design specifications and events are being fully reconstructed, including exclusive production of $\pi^{0}$, $\eta$ and $\omega$ mesons. Linearly-polarized photons were successfully produced through coherent bremsstrahlung and polarization transfer to the $\rho$ has been observed., Comment: 8 pages, 6 figures, Invited contribution to the Hadron 2015 Conference, Newport News VA, September 2015

Published
2015
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2. A study of decays to strange final states with GlueX in Hall D using components of the BaBar DIRC

Author

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

Abstract

We propose to enhance the kaon identification capabilities of the GlueX detector by constructing an FDIRC (Focusing Detection of Internally Reflected Cherenkov) detector utilizing the decommissioned BaBar DIRC components. The GlueX FDIRC would significantly enhance the GlueX physics program by allowing one to search for and study hybrid mesons decaying into kaon final states. Such systematic studies of kaon final states are essential for inferring the quark flavor content of hybrid and conventional mesons. The GlueX FDIRC would reuse one-third of the synthetic fused silica bars that were utilized in the BaBar DIRC. A new focussing photon camera, read out with large area photodetectors, would be developed. We propose operating the enhanced GlueX detector in Hall D for a total of 220 days at an average intensity of 5x10^7 {\gamma}/s, a program that was conditionally approved by PAC39, Comment: 25 pages, 29 figures

Published
2014

3. 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)

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., 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., and Zihlmann, B.

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)

Published
2012

4. 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)

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., 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., and Zihlmann, B.

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)

Published
2012

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