Title

Amplitude Analyses of the Decays chi_c1 -> eta pi+ pi- and chi_c1 -> eta' pi+ pi-

Author(s)/Creator(s)

Raymond Mountain, Syracuse UniversityFollow
Marina Artuso, Department of Physics, Syracuse University, Syracuse, NYFollow
S. Blusk, Department of Physics, Syracuse University, Syracuse, NYFollow
T. Skwarnicki, Department of Physics, Syracuse University, Syracuse, NY

Document Type

Article

Date

9-27-2011

Language

English

Disciplines

Physics

Description/Abstract

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.

Additional Information

27 pages, 12 figures, available through this http URL, submitted to Phys. Rev. D More information at http://arxiv.org/abs/1109.5843

Listed authors are from Syracuse University; 75 additional authors not listed.

Recommended Citation

Mountain, Raymond; Artuso, Marina; Blusk, S.; and Skwarnicki, T., "Amplitude Analyses of the Decays chi_c1 -> eta pi+ pi- and chi_c1 -> eta' pi+ pi-" (2011). Physics - All Scholarship. 369.
https://surface.syr.edu/phy/369

Source

Harvested from Arxiv.org

Creative Commons License

This work is licensed under a Creative Commons Attribution 3.0 License.