First Measurement of $a^0_2(1320)$ Polarized Photoproduction Cross Section
Nuclear Experiment
2025-01-07 v1 High Energy Physics - Experiment
Abstract
We measure for the first time the differential photoproduction cross section of the meson at an average photon beam energy of 8.5~GeV, using data with an integrated luminosity of 104~pb collected by the GlueX experiment. We fully reconstruct the reaction and perform a partial-wave analysis in the 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.
Cite
@article{arxiv.2501.03091,
title = {First Measurement of $a^0_2(1320)$ Polarized Photoproduction Cross Section},
author = {GlueX Collaboration and F. Afzal and C. S. Akondi and M. Albrecht and M. Amaryan and S. Arrigo and V. Arroyave and A. Asaturyan and A. Austregesilo and Z. Baldwin and F. Barbosa and J. Barlow and E. Barriga and R. Barsotti and D. Barton and V. Baturin and V. V. Berdnikov and T. Black and W. Boeglin and M. Boer and W. J. Briscoe and T. Britton and S. Cao and E. Chudakov and G. Chung and P. L. Cole and O. Cortes and V. Crede and M. M. Dalton and D. Darulis and A. Deur and S. Dobbs and A. Dolgolenko and M. Dugger and R. Dzhygadlo and D. Ebersole and M. Edo and H. Egiyan and T. Erbora and P. Eugenio and A. Fabrizi and C. Fanelli and S. Fang and J. Fitches and A. M. Foda and S. Furletov and L. Gan and H. Gao and A. Gardner and A. Gasparian and D. I. Glazier and C. Gleason and V. S. Goryachev and B. Grube and J. Guo and L. Guo and J. Hernandez and K. Hernandez and N. D. Hoffman and D. Hornidge and G. Hou and P. Hurck and A. Hurley and W. Imoehl and D. G. Ireland and M. M. Ito and I. Jaegle and N. S. Jarvis and T. Jeske and M. Jing and R. T. Jones and V. Kakoyan and G. Kalicy and V. Khachatryan and C. Kourkoumelis and A. LaDuke and I. Larin and D. Lawrence and D. I. Lersch and H. Li and B. Liu and K. Livingston and G. J. Lolos and L. Lorenti and V. Lyubovitskij and R. Ma and A. Mahmood and H. Marukyan and V. Matveev and M. McCaughan and M. McCracken and C. A. Meyer and R. Miskimen and R. E. Mitchell and K. Mizutani and P. Moran and V. Neelamana and L. Ng and E. Nissen and S. Orešić and A. I. Ostrovidov and Z. Papandreou and C. Paudel and R. Pedroni and L. Pentchev and K. J. Peters and E. Prather and L. Puthiya Veetil and S. Rakshit and J. Reinhold and A. Remington and B. G. Ritchie and J. Ritman and G. Rodriguez and D. Romanov and K. Saldana and C. Salgado and S. Schadmand and A. M. Schertz and K. Scheuer and A. Schick and A. Schmidt and R. A. Schumacher and J. Schwiening and M. Scott and N. Septian and P. Sharp and X. Shen and M. R. Shepherd and J. Sikes and A. Smith and E. S. Smith and D. I. Sober and A. Somov and S. Somov and J. R. Stevens and I. I. Strakovsky and B. Sumner and K. Suresh and V. V. Tarasov and S. Taylor and A. Teymurazyan and A. Thiel and T. Viducic and T. Whitlatch and N. Wickramaarachchi and Y. Wunderlich and B. Yu and J. Zarling and Z. Zhang and X. Zhou and B. Zihlmann},
journal= {arXiv preprint arXiv:2501.03091},
year = {2025}
}
Comments
8 pages, 4 figures plus supplemental material