تقرير
Amplitude analyses of the decays chi_c1 -> eta pi+ pi- and chi_c1 -> eta' pi+ pi-
| العنوان: | Amplitude analyses of the decays chi_c1 -> eta pi+ pi- and chi_c1 -> eta' pi+ pi- |
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| المؤلفون: | CLEO Collaboration, Adams, G. S., Napolitano, J., Ecklund, K. M., Insler, J., Muramatsu, H., Park, C. S., Pearson, L. J., Thorndike, E. H., Ricciardi, S., Thomas, C., Artuso, M., Blusk, S., Mountain, R., Skwarnicki, T., Stone, S., Zhang, L. M., Bonvicini, G., Cinabro, D., Lincoln, A., Smith, M. J., Zhou, P., Zhu, J., Naik, P., Rademacker, J., Asner, D. M., Edwards, K. W., Randrianarivony, K., Tatishvili, G., Briere, R. A., Vogel, H., Onyisi, P. U. E., Rosner, J. L., Alexander, J. P., Cassel, D. G., Das, S., Ehrlich, R., Gibbons, L., Gray, S. W., Hartill, D. L., Heltsley, B. K., Kreinick, D. L., Kuznetsov, V. E., Patterson, J. R., Peterson, D., Riley, D., Ryd, A., Sadoff, A. J., Shi, X., Sun, W. M., Yelton, J., Rubin, P., Lowrey, N., Mehrabyan, S., Selen, M., Wiss, J., Libby, J., Kornicer, M., Mitchell, R. E., Shepherd, M. R., Szczepaniak, A., Besson, D., Pedlar, T. K., Cronin-Hennessy, D., Hietala, J., Dobbs, S., Metreveli, Z., Seth, K. K., Tomaradze, A., Xiao, T., Martin, L., Powell, A., Wilkinson, G., Ge, J. Y., Miller, D. H., Shipsey, I. P. J., Xin, B. |
| المصدر: | Phys. Rev. D 84, 112009 (2011) |
| سنة النشر: | 2011 |
| المجموعة: | High Energy Physics - Experiment |
| مصطلحات موضوعية: | High Energy Physics - Experiment |
| الوصف: | Using a data sample of 2.59 x 10^7 psi(2S) decays obtained with the CLEO-c detector, we perform amplitude analyses of the complementary decay chains chi_c1 -> eta pi+ pi- and chi_c1 -> eta' pi+ pi-. We find evidence for a P-wave eta' pi scattering amplitude, which, if interpreted as a resonance, would have exotic J^PC = 1^-+ and parameters consistent with the pi_1(1600) state reported in other production mechanisms. We also make the first observation of the decay a_0(980) -> eta' pi and measure the ratio of branching fractions B(a_0(980) -> eta' pi)/B(a_0(980) -> eta pi) = 0.064 +- 0.014 +- 0.014. The pi pi spectrum produced with a recoiling eta is compared to that with eta' recoil. Comment: 27 pages, 12 figures, available through http://www.lns.cornell.edu/public/CLNS/ |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.84.112009 |
| URL الوصول: | http://arxiv.org/abs/1109.5843 |
| رقم الأكسشن: | edsarx.1109.5843 |
| قاعدة البيانات: | arXiv |
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