تقرير
Double Polarization Observables in Pentaquark Photoproduction
| العنوان: | Double Polarization Observables in Pentaquark Photoproduction |
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| المؤلفون: | JPAC Collaboration, Winney, Daniel, Fanelli, Cristiano, Pilloni, Alessandro, Blin, Astrid N. Hiller, Fernandez-Ramirez, Cesar, Albaladejo, Miguel, Mathieu, Vincent, Mokeev, Victor I., Szczepaniak, Adam P. |
| المصدر: | Phys. Rev. D 100, 034019 (2019) |
| سنة النشر: | 2019 |
| المجموعة: | High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Experiment |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Experiment, Nuclear Experiment |
| الوصف: | We investigate the properties of the hidden charm pentaquark-like resonances first observed by LHCb in 2015, by measuring the polarization transfer KLL between the incident photon and the outgoing proton in the exclusive photoproduction of J/psi near threshold. We present a first estimate of the sensitivity of this observable to the pentaquark photocouplings and hadronic branching ratios, and extend our predictions to the case of initial state helicity correlation ALL, using a polarized target. These results serve as a benchmark for the SBS experiment at Jefferson Lab, which proposes to measure for the first time the helicity correlations ALL and KLL in J/psi exclusive photoproduction, in order to determine the pentaquark photocouplings and branching ratios. Comment: 9 pages, 7 figures, 2 tables, Version published in PRD |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.100.034019 |
| URL الوصول: | http://arxiv.org/abs/1907.09393 |
| رقم الأكسشن: | edsarx.1907.09393 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.100.034019 |
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