Publications
Publication Information
Title | New analysis of eta pi tensor resonances measured at the COMPASS experiment |
Authors | Andrew Jackura, CESAR FERNANDEZ RAMIREZ, Mikhail Mikhasenko, Alessandro Pilloni, Vincent Mathieu, Jannes Nys, Vladiszlav Pauk, Adam Szczepaniak, Geoffrey Fox |
JLAB number | JLAB-THY-17-2468 |
LANL number | arXiv:1707.02848 |
Other number | DOE/OR/23177-4137 |
Document Type(s) | (Journal Article) |
Associated with EIC: | No |
Supported by Jefferson Lab LDRD Funding: | No |
Funding Source: | Nuclear Physics (NP) |
Other Funding: | DE-FG0287ER40365 PHY-1415459 PAPIIT-DGAPA Grant No. IA101717 |
Journal Compiled for Physics Letters B Volume 779 Page(s) 464-472 Refereed | |
Publication Abstract: | We present a new amplitude analysis of the eta pi D-wave in pi- p -> eta pi- p measured by COMPASS. Employing an analytical model based on the principles of the relativistic S-matrix, we find two resonances that can be identified with the a_2(1320) and the excited a'_2(1700), and perform a comprehensive analysis of their pole positions. For the mass and width of the a_2 we find M (1308 +- 1 +- 7) MeV and Gamma = (113 +- 2 +- 4) MeV, and for the excited state a'_2 we obtain M = (1710 +- 10 +- 70) MeV and Gamma = (300 +- 40 +- 70) MeV, respectively. |
Experiment Numbers: | other |
Group: | THEORY CENTER |
Document: | |
DOI: | https://doi.org/10.1016/j.physletb.2018.01.017 |
Accepted Manuscript: | 1-s2.0-S037026931830025X-main.pdf |
Supporting Documents: | |
Supporting Datasets: |