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Title: Photoproduction of the f 1 ( 1285 ) meson

Abstract

The $$f_1(1285)$$ meson with mass $$1281.0 \pm 0.8$$ MeV/$c^2$ and width $$18.4 \pm 1.4$$ MeV (FWHM) was measured for the first time in photoproduction from a proton target using CLAS at Jefferson Lab. Differential cross sections were obtained via the $$\eta\pi^{+}\pi^{-}$$, $$K^+\bar{K}^0\pi^-$$, and $$K^-K^0\pi^+$$ decay channels from threshold up to a center-of-mass energy of 2.8 GeV. The mass, width, and an amplitude analysis of the $$\eta\pi^{+}\pi^{-}$$ final-state Dalitz distribution are consistent with the axial-vector $J^P=1^+$ $$f_1(1285)$$ identity, rather than the pseudoscalar $0^-$ $$\eta(1295)$$. The production mechanism is more consistent with $s$-channel decay of a high-mass $N^*$ state, and not with $t$-channel meson exchange. Decays to $$\eta\pi\pi$$ go dominantly via the intermediate $$a_0^\pm(980)\pi^\mp$$ states, with the branching ratio $$\Gamma(a_0\pi \text{ (no} \bar{K} K\text{)}) / \Gamma(\eta\pi\pi \text{(all)}) = 0.74\pm0.09$$. The branching ratios $$\Gamma(K \bar{K} \pi)/\Gamma(\eta\pi\pi) = 0.216\pm0.033$$ and $$\Gamma(\gamma\rho^0)/\Gamma(\eta\pi\pi) = 0.047\pm0.018$$ were also obtained. The first is in agreement with previous data for the $$f_1(1285)$$, while the latter is lower than the world average.

Authors:
 [1];  [1]; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
  1. Carnegie Mellon Univ., Pittsburgh, PA (United States)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Contributing Org.:
CLAS Collaboration
OSTI Identifier:
1256692
Report Number(s):
JLAB-PHY-16-2270; DOE/OR/23177-3815; arXiv:1604.07425
Journal ID: ISSN 2469-9985; PRVCAN
DOE Contract Number:  
FG02-87ER40315; AC05-06OR23177; ST/J000175
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review C; Journal Volume: 93; Journal Issue: 6
Country of Publication:
United States
Language:
English

Citation Formats

Dickson, Ryan, Schumacher, Reinhard A., Adhikari, K. P., Akbar, Z., Amaryan, M. J., Anefalos Pereira, S., Badui, R. A., Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A., Boiarinov, S., Briscoe, W. J., Burkert, V. D., Cao, T., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Chetry, T., Ciullo, G., Colaneri, L., Cole, P. L., Compton, N., Contalbrigo, M., Cortes, O., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., De Sanctis, E., Deur, A., Djalali, C., Dugger, M., Dupre, R., El Alaoui, A., El Fassi, L., Eugenio, P., Fanchini, E., Fedotov, G., Filippi, A., Fleming, J. A., Gevorgyan, N., Ghandilyan, Y., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Gothe, R. W., Griffioen, K. A., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Holtrop, M., Hicks, K., Hughes, S. M., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jiang, H., Jo, H. S., Joosten, S., Keller, D., Khachatryan, G., Khandaker, M., Kim, A., Kim, W., Klein, F. J., Kubarovsky, V., Kuleshov, S. V., Lanza, L., Lenisa, P., Livingston, K., Lu, H. Y., MacGregor, I. J. D., Mattione, P., McKinnon, B., Meyer, C. A., Mirazita, M., Markov, N., Mokeev, V., Moriya, K., Munevar, E., Murdoch, G., Nadel-Turonski, P., Net, L. A., Ni, A., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Phelps, W., Pisano, S., Pogorelko, O., Price, J. W., Prok, Y., Puckett, A. J. R., Raue, B. A., Ripani, M., Rizzo, A., Rosner, G., Roy, P., Salgado, C., Seder, E., Sharabian, Y. G., Skorodumina, Iu., Smith, E. S., Smith, G. D., Sober, D., Sokhan, D., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Stankovic, I., Strauch, S., Sytnik, V., Taiuti, M., Ungaro, M., Voskanyan, H., Voutier, E., Walford, N. K., Watts, D. P., Weygand, D., Wood, M. H., Zachariou, N., Zana, L., Zhang, J., and Zonta, I. Photoproduction of the f1(1285) meson. United States: N. p., 2016. Web. doi:10.1103/PhysRevC.93.065202.
Dickson, Ryan, Schumacher, Reinhard A., Adhikari, K. P., Akbar, Z., Amaryan, M. J., Anefalos Pereira, S., Badui, R. A., Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A., Boiarinov, S., Briscoe, W. J., Burkert, V. D., Cao, T., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Chetry, T., Ciullo, G., Colaneri, L., Cole, P. L., Compton, N., Contalbrigo, M., Cortes, O., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., De Sanctis, E., Deur, A., Djalali, C., Dugger, M., Dupre, R., El Alaoui, A., El Fassi, L., Eugenio, P., Fanchini, E., Fedotov, G., Filippi, A., Fleming, J. A., Gevorgyan, N., Ghandilyan, Y., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Gothe, R. W., Griffioen, K. A., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Holtrop, M., Hicks, K., Hughes, S. M., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jiang, H., Jo, H. S., Joosten, S., Keller, D., Khachatryan, G., Khandaker, M., Kim, A., Kim, W., Klein, F. J., Kubarovsky, V., Kuleshov, S. V., Lanza, L., Lenisa, P., Livingston, K., Lu, H. Y., MacGregor, I. J. D., Mattione, P., McKinnon, B., Meyer, C. A., Mirazita, M., Markov, N., Mokeev, V., Moriya, K., Munevar, E., Murdoch, G., Nadel-Turonski, P., Net, L. A., Ni, A., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Phelps, W., Pisano, S., Pogorelko, O., Price, J. W., Prok, Y., Puckett, A. J. R., Raue, B. A., Ripani, M., Rizzo, A., Rosner, G., Roy, P., Salgado, C., Seder, E., Sharabian, Y. G., Skorodumina, Iu., Smith, E. S., Smith, G. D., Sober, D., Sokhan, D., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Stankovic, I., Strauch, S., Sytnik, V., Taiuti, M., Ungaro, M., Voskanyan, H., Voutier, E., Walford, N. K., Watts, D. P., Weygand, D., Wood, M. H., Zachariou, N., Zana, L., Zhang, J., & Zonta, I. Photoproduction of the f1(1285) meson. United States. doi:10.1103/PhysRevC.93.065202.
Dickson, Ryan, Schumacher, Reinhard A., Adhikari, K. P., Akbar, Z., Amaryan, M. J., Anefalos Pereira, S., Badui, R. A., Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A., Boiarinov, S., Briscoe, W. J., Burkert, V. D., Cao, T., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Chetry, T., Ciullo, G., Colaneri, L., Cole, P. L., Compton, N., Contalbrigo, M., Cortes, O., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., De Sanctis, E., Deur, A., Djalali, C., Dugger, M., Dupre, R., El Alaoui, A., El Fassi, L., Eugenio, P., Fanchini, E., Fedotov, G., Filippi, A., Fleming, J. A., Gevorgyan, N., Ghandilyan, Y., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Gothe, R. W., Griffioen, K. A., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Holtrop, M., Hicks, K., Hughes, S. M., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jiang, H., Jo, H. S., Joosten, S., Keller, D., Khachatryan, G., Khandaker, M., Kim, A., Kim, W., Klein, F. J., Kubarovsky, V., Kuleshov, S. V., Lanza, L., Lenisa, P., Livingston, K., Lu, H. Y., MacGregor, I. J. D., Mattione, P., McKinnon, B., Meyer, C. A., Mirazita, M., Markov, N., Mokeev, V., Moriya, K., Munevar, E., Murdoch, G., Nadel-Turonski, P., Net, L. A., Ni, A., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Phelps, W., Pisano, S., Pogorelko, O., Price, J. W., Prok, Y., Puckett, A. J. R., Raue, B. A., Ripani, M., Rizzo, A., Rosner, G., Roy, P., Salgado, C., Seder, E., Sharabian, Y. G., Skorodumina, Iu., Smith, E. S., Smith, G. D., Sober, D., Sokhan, D., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Stankovic, I., Strauch, S., Sytnik, V., Taiuti, M., Ungaro, M., Voskanyan, H., Voutier, E., Walford, N. K., Watts, D. P., Weygand, D., Wood, M. H., Zachariou, N., Zana, L., Zhang, J., and Zonta, I. Wed . "Photoproduction of the f1(1285) meson". United States. doi:10.1103/PhysRevC.93.065202. https://www.osti.gov/servlets/purl/1256692.
@article{osti_1256692,
title = {Photoproduction of the f1(1285) meson},
author = {Dickson, Ryan and Schumacher, Reinhard A. and Adhikari, K. P. and Akbar, Z. and Amaryan, M. J. and Anefalos Pereira, S. and Badui, R. A. and Ball, J. and Battaglieri, M. and Batourine, V. and Bedlinskiy, I. and Biselli, A. and Boiarinov, S. and Briscoe, W. J. and Burkert, V. D. and Cao, T. and Carman, D. S. and Celentano, A. and Chandavar, S. and Charles, G. and Chetry, T. and Ciullo, G. and Colaneri, L. and Cole, P. L. and Compton, N. and Contalbrigo, M. and Cortes, O. and Crede, V. and D'Angelo, A. and Dashyan, N. and De Vita, R. and De Sanctis, E. and Deur, A. and Djalali, C. and Dugger, M. and Dupre, R. and El Alaoui, A. and El Fassi, L. and Eugenio, P. and Fanchini, E. and Fedotov, G. and Filippi, A. and Fleming, J. A. and Gevorgyan, N. and Ghandilyan, Y. and Gilfoyle, G. P. and Giovanetti, K. L. and Girod, F. X. and Gothe, R. W. and Griffioen, K. A. and Guo, L. and Hafidi, K. and Hakobyan, H. and Hanretty, C. and Harrison, N. and Hattawy, M. and Holtrop, M. and Hicks, K. and Hughes, S. M. and Ilieva, Y. and Ireland, D. G. and Ishkhanov, B. S. and Isupov, E. L. and Jiang, H. and Jo, H. S. and Joosten, S. and Keller, D. and Khachatryan, G. and Khandaker, M. and Kim, A. and Kim, W. and Klein, F. J. and Kubarovsky, V. and Kuleshov, S. V. and Lanza, L. and Lenisa, P. and Livingston, K. and Lu, H. Y. and MacGregor, I. J. D. and Mattione, P. and McKinnon, B. and Meyer, C. A. and Mirazita, M. and Markov, N. and Mokeev, V. and Moriya, K. and Munevar, E. and Murdoch, G. and Nadel-Turonski, P. and Net, L. A. and Ni, A. and Osipenko, M. and Ostrovidov, A. I. and Park, K. and Pasyuk, E. and Phelps, W. and Pisano, S. and Pogorelko, O. and Price, J. W. and Prok, Y. and Puckett, A. J. R. and Raue, B. A. and Ripani, M. and Rizzo, A. and Rosner, G. and Roy, P. and Salgado, C. and Seder, E. and Sharabian, Y. G. and Skorodumina, Iu. and Smith, E. S. and Smith, G. D. and Sober, D. and Sokhan, D. and Sparveris, N. and Stepanyan, S. and Strakovsky, I. I. and Stankovic, I. and Strauch, S. and Sytnik, V. and Taiuti, M. and Ungaro, M. and Voskanyan, H. and Voutier, E. and Walford, N. K. and Watts, D. P. and Weygand, D. and Wood, M. H. and Zachariou, N. and Zana, L. and Zhang, J. and Zonta, I.},
abstractNote = {The $f_1(1285)$ meson with mass $1281.0 \pm 0.8$ MeV/$c^2$ and width $18.4 \pm 1.4$ MeV (FWHM) was measured for the first time in photoproduction from a proton target using CLAS at Jefferson Lab. Differential cross sections were obtained via the $\eta\pi^{+}\pi^{-}$, $K^+\bar{K}^0\pi^-$, and $K^-K^0\pi^+$ decay channels from threshold up to a center-of-mass energy of 2.8 GeV. The mass, width, and an amplitude analysis of the $\eta\pi^{+}\pi^{-}$ final-state Dalitz distribution are consistent with the axial-vector $J^P=1^+$ $f_1(1285)$ identity, rather than the pseudoscalar $0^-$ $\eta(1295)$. The production mechanism is more consistent with $s$-channel decay of a high-mass $N^*$ state, and not with $t$-channel meson exchange. Decays to $\eta\pi\pi$ go dominantly via the intermediate $a_0^\pm(980)\pi^\mp$ states, with the branching ratio $\Gamma(a_0\pi \text{ (no} \bar{K} K\text{)}) / \Gamma(\eta\pi\pi \text{(all)}) = 0.74\pm0.09$. The branching ratios $\Gamma(K \bar{K} \pi)/\Gamma(\eta\pi\pi) = 0.216\pm0.033$ and $\Gamma(\gamma\rho^0)/\Gamma(\eta\pi\pi) = 0.047\pm0.018$ were also obtained. The first is in agreement with previous data for the $f_1(1285)$, while the latter is lower than the world average.},
doi = {10.1103/PhysRevC.93.065202},
journal = {Physical Review C},
number = 6,
volume = 93,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 2016},
month = {Wed Jun 01 00:00:00 EDT 2016}
}