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New analysis of ηπ tensor resonances measured at the COMPASS experiment

Jackura, A.
•
Fernández-Ramírez, C.
•
Mikhasenko, M.
altro
Ziembicki, M.
2018
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
Abstract
We present a new amplitude analysis of the ηπ D-wave in the reaction π− p → ηπ− 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 a2(1320) and the excited a2(1700), and perform a comprehensive analysis of their pole positions. For the mass and width of the a2 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.
DOI
10.1016/j.physletb.2018.01.017
WOS
WOS:000429098900061
Archivio
http://hdl.handle.net/11368/2927773
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85042430181
https://www.sciencedirect.com/science/article/pii/S037026931830025X
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2927773/1/2018_plb779_464.pdf
Soggetti
  • Nuclear and High Ener...

Scopus© citazioni
10
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
14
Data di acquisizione
Mar 27, 2024
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