MINISTR ŠKOLSTVÍ KE SPOLUPRÁCI ČR S SÚJV
INTEREST JINR, Wave 6
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Call for the projects solved in collaboration with JINR (Projects 3+3) 
Call for the Grants of the Plenipotentiary of the Government of the Czech Republic in JINR
MEYS
22 October 2021
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INTEREST JINR, Wave 5
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9 August 2021
Working Stays CR - JINR 2022New analysis of eta pi tensor resonances measured at the COMPASS experiment
Author
| Jackura A. | Indiana University Bloomington, Department of Physics |
| Slunečka Miloš, Ing. | Faculty of Mathematics and Physics, Charles University in Prague, JINR Dubna |
| Smolík Jan, Mgr. Ph.D. | Faculty of Nuclear Sciences and Physical Engineering CTU |
| Taševský Marek, Mgr. Ph.D. | Institute of Physics ASCR |
| et al. | different institutions |
Year
2018
Scientific journal
Physics Letters B, 779, 464-472
Web
Abstract
We present a new amplitude analysis of the eta pi D-wave in the reaction 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 = (1307 +/- 1 6) MeV and Gamma=(112 +/- 1 +/- 8) MeV, and for the excited state a(2)' we obtain M = (1720 +/- 10 +/- 60) MeV and Gamma = (280 +/- 10 +/- 70) MeV, respectively. (C) 2018 The Author(s). Published by Elsevier B.V.
Cite article as:
A. Jackura, M. Slunečka, J. Smolík, M. Taševský , . et al., "New analysis of eta pi tensor resonances measured at the COMPASS experiment", Physics Letters B, 779, 464-472 (2018)