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First Measurement of $a^0_2(1320)$ Polarized Photoproduction Cross Section

Fuente: arXiv

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Bibliographic Details
Main Authors:	GlueX Collaboration, Afzal, F., Akondi, C. S., Albrecht, M., Amaryan, M., Arrigo, S., Arroyave, V., Asaturyan, A., Austregesilo, A., Baldwin, Z., Barbosa, F., Barlow, J., Barriga, E., Barsotti, R., Barton, D., Baturin, V., Berdnikov, V. V., Black, T., Boeglin, W., Boer, M., Briscoe, W. J., Britton, T., Cao, S., Chudakov, E., Chung, G., Cole, P. L., Cortes, O., Crede, V., Dalton, M. M., Darulis, D., Deur, A., Dobbs, S., Dolgolenko, A., Dugger, M., Dzhygadlo, R., Ebersole, D., Edo, M., Egiyan, H., Erbora, T., Eugenio, P., Fabrizi, A., Fanelli, C., Fang, S., Fitches, J., Foda, A. M., Furletov, S., Gan, L., Gao, H., Gardner, A., Gasparian, A., Glazier, D. I., Gleason, C., Goryachev, V. S., Grube, B., Guo, J., Guo, L., Hernandez, J., Hernandez, K., Hoffman, N. D., Hornidge, D., Hou, G., Hurck, P., Hurley, A., Imoehl, W., Ireland, D. G., Ito, M. M., Jaegle, I., Jarvis, N. S., Jeske, T., Jing, M., Jones, R. T., Kakoyan, V., Kalicy, G., Khachatryan, V., Kourkoumelis, C., LaDuke, A., Larin, I., Lawrence, D., Lersch, D. I., Li, H., Liu, B., Livingston, K., Lolos, G. J., Lorenti, L., Lyubovitskij, V., Ma, R., Mahmood, A., Marukyan, H., Matveev, V., McCaughan, M., McCracken, M., Meyer, C. A., Miskimen, R., Mitchell, R. E., Mizutani, K., Moran, P., Neelamana, V., Ng, L., Nissen, E., Orešić, S., Ostrovidov, A. I., Papandreou, Z., Paudel, C., Pedroni, R., Pentchev, L., Peters, K. J., Prather, E., Veetil, L. Puthiya, Rakshit, S., Reinhold, J., Remington, A., Ritchie, B. G., Ritman, J., Rodriguez, G., Romanov, D., Saldana, K., Salgado, C., Schadmand, S., Schertz, A. M., Scheuer, K., Schick, A., Schmidt, A., Schumacher, R. A., Schwiening, J., Scott, M., Septian, N., Sharp, P., Shen, X., Shepherd, M. R., Sikes, J., Smith, A., Smith, E. S., Sober, D. I., Somov, A., Somov, S., Stevens, J. R., Strakovsky, I. I., Sumner, B., Suresh, K., Tarasov, V. V., Taylor, S., Teymurazyan, A., Thiel, A., Viducic, T., Whitlatch, T., Wickramaarachchi, N., Wunderlich, Y., Yu, B., Zarling, J., Zhang, Z., Zhou, X., Zihlmann, B.
Format:	Preprint
Published:	2025
Subjects:	Nuclear Experiment High Energy Physics - Experiment
Online Access:	Acceder al recurso
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author	GlueX Collaboration Afzal, F. Akondi, C. S. Albrecht, M. Amaryan, M. Arrigo, S. Arroyave, V. Asaturyan, A. Austregesilo, A. Baldwin, Z. Barbosa, F. Barlow, J. Barriga, E. Barsotti, R. Barton, D. Baturin, V. Berdnikov, V. V. Black, T. Boeglin, W. Boer, M. Briscoe, W. J. Britton, T. Cao, S. Chudakov, E. Chung, G. Cole, P. L. Cortes, O. Crede, V. Dalton, M. M. Darulis, D. Deur, A. Dobbs, S. Dolgolenko, A. Dugger, M. Dzhygadlo, R. Ebersole, D. Edo, M. Egiyan, H. Erbora, T. Eugenio, P. Fabrizi, A. Fanelli, C. Fang, S. Fitches, J. Foda, A. M. Furletov, S. Gan, L. Gao, H. Gardner, A. Gasparian, A. Glazier, D. I. Gleason, C. Goryachev, V. S. Grube, B. Guo, J. Guo, L. Hernandez, J. Hernandez, K. Hoffman, N. D. Hornidge, D. Hou, G. Hurck, P. Hurley, A. Imoehl, W. Ireland, D. G. Ito, M. M. Jaegle, I. Jarvis, N. S. Jeske, T. Jing, M. Jones, R. T. Kakoyan, V. Kalicy, G. Khachatryan, V. Kourkoumelis, C. LaDuke, A. Larin, I. Lawrence, D. Lersch, D. I. Li, H. Liu, B. Livingston, K. Lolos, G. J. Lorenti, L. Lyubovitskij, V. Ma, R. Mahmood, A. Marukyan, H. Matveev, V. McCaughan, M. McCracken, M. Meyer, C. A. Miskimen, R. Mitchell, R. E. Mizutani, K. Moran, P. Neelamana, V. Ng, L. Nissen, E. Orešić, S. Ostrovidov, A. I. Papandreou, Z. Paudel, C. Pedroni, R. Pentchev, L. Peters, K. J. Prather, E. Veetil, L. Puthiya Rakshit, S. Reinhold, J. Remington, A. Ritchie, B. G. Ritman, J. Rodriguez, G. Romanov, D. Saldana, K. Salgado, C. Schadmand, S. Schertz, A. M. Scheuer, K. Schick, A. Schmidt, A. Schumacher, R. A. Schwiening, J. Scott, M. Septian, N. Sharp, P. Shen, X. Shepherd, M. R. Sikes, J. Smith, A. Smith, E. S. Sober, D. I. Somov, A. Somov, S. Stevens, J. R. Strakovsky, I. I. Sumner, B. Suresh, K. Tarasov, V. V. Taylor, S. Teymurazyan, A. Thiel, A. Viducic, T. Whitlatch, T. Wickramaarachchi, N. Wunderlich, Y. Yu, B. Zarling, J. Zhang, Z. Zhou, X. Zihlmann, B.
author_facet	GlueX Collaboration Afzal, F. Akondi, C. S. Albrecht, M. Amaryan, M. Arrigo, S. Arroyave, V. Asaturyan, A. Austregesilo, A. Baldwin, Z. Barbosa, F. Barlow, J. Barriga, E. Barsotti, R. Barton, D. Baturin, V. Berdnikov, V. V. Black, T. Boeglin, W. Boer, M. Briscoe, W. J. Britton, T. Cao, S. Chudakov, E. Chung, G. Cole, P. L. Cortes, O. Crede, V. Dalton, M. M. Darulis, D. Deur, A. Dobbs, S. Dolgolenko, A. Dugger, M. Dzhygadlo, R. Ebersole, D. Edo, M. Egiyan, H. Erbora, T. Eugenio, P. Fabrizi, A. Fanelli, C. Fang, S. Fitches, J. Foda, A. M. Furletov, S. Gan, L. Gao, H. Gardner, A. Gasparian, A. Glazier, D. I. Gleason, C. Goryachev, V. S. Grube, B. Guo, J. Guo, L. Hernandez, J. Hernandez, K. Hoffman, N. D. Hornidge, D. Hou, G. Hurck, P. Hurley, A. Imoehl, W. Ireland, D. G. Ito, M. M. Jaegle, I. Jarvis, N. S. Jeske, T. Jing, M. Jones, R. T. Kakoyan, V. Kalicy, G. Khachatryan, V. Kourkoumelis, C. LaDuke, A. Larin, I. Lawrence, D. Lersch, D. I. Li, H. Liu, B. Livingston, K. Lolos, G. J. Lorenti, L. Lyubovitskij, V. Ma, R. Mahmood, A. Marukyan, H. Matveev, V. McCaughan, M. McCracken, M. Meyer, C. A. Miskimen, R. Mitchell, R. E. Mizutani, K. Moran, P. Neelamana, V. Ng, L. Nissen, E. Orešić, S. Ostrovidov, A. I. Papandreou, Z. Paudel, C. Pedroni, R. Pentchev, L. Peters, K. J. Prather, E. Veetil, L. Puthiya Rakshit, S. Reinhold, J. Remington, A. Ritchie, B. G. Ritman, J. Rodriguez, G. Romanov, D. Saldana, K. Salgado, C. Schadmand, S. Schertz, A. M. Scheuer, K. Schick, A. Schmidt, A. Schumacher, R. A. Schwiening, J. Scott, M. Septian, N. Sharp, P. Shen, X. Shepherd, M. R. Sikes, J. Smith, A. Smith, E. S. Sober, D. I. Somov, A. Somov, S. Stevens, J. R. Strakovsky, I. I. Sumner, B. Suresh, K. Tarasov, V. V. Taylor, S. Teymurazyan, A. Thiel, A. Viducic, T. Whitlatch, T. Wickramaarachchi, N. Wunderlich, Y. Yu, B. Zarling, J. Zhang, Z. Zhou, X. Zihlmann, B.
contents	We measure for the first time the differential photoproduction cross section $dσ/dt$ of the $a_2(1320)$ meson at an average photon beam energy of 8.5~GeV, using data with an integrated luminosity of 104~pb$^{-1}$ collected by the GlueX experiment. We fully reconstruct the $γp \to ηπ^0 p$ reaction and perform a partial-wave analysis in the $a_2(1320)$ mass region with amplitudes that incorporate the linear polarization of the beam. This allows us to separate for the first time the contributions of natural- and unnatural-parity exchanges. These measurements provide novel information about the photoproduction mechanism, which is critical for the search for spin-exotic states.
format	Preprint
id	arxiv_https___arxiv_org_abs_2501_03091
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	First Measurement of $a^0_2(1320)$ Polarized Photoproduction Cross Section GlueX Collaboration Afzal, F. Akondi, C. S. Albrecht, M. Amaryan, M. Arrigo, S. Arroyave, V. Asaturyan, A. Austregesilo, A. Baldwin, Z. Barbosa, F. Barlow, J. Barriga, E. Barsotti, R. Barton, D. Baturin, V. Berdnikov, V. V. Black, T. Boeglin, W. Boer, M. Briscoe, W. J. Britton, T. Cao, S. Chudakov, E. Chung, G. Cole, P. L. Cortes, O. Crede, V. Dalton, M. M. Darulis, D. Deur, A. Dobbs, S. Dolgolenko, A. Dugger, M. Dzhygadlo, R. Ebersole, D. Edo, M. Egiyan, H. Erbora, T. Eugenio, P. Fabrizi, A. Fanelli, C. Fang, S. Fitches, J. Foda, A. M. Furletov, S. Gan, L. Gao, H. Gardner, A. Gasparian, A. Glazier, D. I. Gleason, C. Goryachev, V. S. Grube, B. Guo, J. Guo, L. Hernandez, J. Hernandez, K. Hoffman, N. D. Hornidge, D. Hou, G. Hurck, P. Hurley, A. Imoehl, W. Ireland, D. G. Ito, M. M. Jaegle, I. Jarvis, N. S. Jeske, T. Jing, M. Jones, R. T. Kakoyan, V. Kalicy, G. Khachatryan, V. Kourkoumelis, C. LaDuke, A. Larin, I. Lawrence, D. Lersch, D. I. Li, H. Liu, B. Livingston, K. Lolos, G. J. Lorenti, L. Lyubovitskij, V. Ma, R. Mahmood, A. Marukyan, H. Matveev, V. McCaughan, M. McCracken, M. Meyer, C. A. Miskimen, R. Mitchell, R. E. Mizutani, K. Moran, P. Neelamana, V. Ng, L. Nissen, E. Orešić, S. Ostrovidov, A. I. Papandreou, Z. Paudel, C. Pedroni, R. Pentchev, L. Peters, K. J. Prather, E. Veetil, L. Puthiya Rakshit, S. Reinhold, J. Remington, A. Ritchie, B. G. Ritman, J. Rodriguez, G. Romanov, D. Saldana, K. Salgado, C. Schadmand, S. Schertz, A. M. Scheuer, K. Schick, A. Schmidt, A. Schumacher, R. A. Schwiening, J. Scott, M. Septian, N. Sharp, P. Shen, X. Shepherd, M. R. Sikes, J. Smith, A. Smith, E. S. Sober, D. I. Somov, A. Somov, S. Stevens, J. R. Strakovsky, I. I. Sumner, B. Suresh, K. Tarasov, V. V. Taylor, S. Teymurazyan, A. Thiel, A. Viducic, T. Whitlatch, T. Wickramaarachchi, N. Wunderlich, Y. Yu, B. Zarling, J. Zhang, Z. Zhou, X. Zihlmann, B. Nuclear Experiment High Energy Physics - Experiment We measure for the first time the differential photoproduction cross section $dσ/dt$ of the $a_2(1320)$ meson at an average photon beam energy of 8.5~GeV, using data with an integrated luminosity of 104~pb$^{-1}$ collected by the GlueX experiment. We fully reconstruct the $γp \to ηπ^0 p$ reaction and perform a partial-wave analysis in the $a_2(1320)$ mass region with amplitudes that incorporate the linear polarization of the beam. This allows us to separate for the first time the contributions of natural- and unnatural-parity exchanges. These measurements provide novel information about the photoproduction mechanism, which is critical for the search for spin-exotic states.
title	First Measurement of $a^0_2(1320)$ Polarized Photoproduction Cross Section
topic	Nuclear Experiment High Energy Physics - Experiment
url	https://arxiv.org/abs/2501.03091