@article{a0514427cb8042e782edb0bab0acdbe4,
title = "New analysis of ηπ tensor resonances measured at the COMPASS experiment",
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 Γ=(112±1±8) MeV, and for the excited state a2 ′ we obtain M=(1720±10±60) MeV and Γ=(280±10±70) MeV, respectively.",
author = "\{JPAC Collaboration\} and \{COMPASS Collaboration\} and A. Jackura and C. Fern{\'a}ndez-Ram{\'i}rez and M. Mikhasenko and A. Pilloni and V. Mathieu and J. Nys and V. Pauk and Szczepaniak, \{A. P.\} and G. Fox and M. Aghasyan and R. Akhunzyanov and Alexeev, \{M. G.\} and Alexeev, \{G. D.\} and A. Amoroso and V. Andrieux and Anfimov, \{N. V.\} and V. Anosov and A. Antoshkin and K. Augsten and W. Augustyniak and A. Austregesilo and Azevedo, \{C. D.R.\} and B. Bade{\l}ek and F. Balestra and M. Ball and J. Barth and R. Beck and Y. Bedfer and J. Bernhard and K. Bicker and Bielert, \{E. R.\} and R. Birsa and M. Bodlak and P. Bordalo and F. Bradamante and A. Bressan and M. B{\"u}chele and Burtsev, \{V. E.\} and Chang, \{W. C.\} and C. Chatterjee and M. Chiosso and I. Choi and Chumakov, \{A. G.\} and Chung, \{S. U.\} and A. Cicuttin and Crespo, \{M. L.\} and \{Dalla Torre\}, S. and Dasgupta, \{S. S.\} and S. Dasgupta and Denisov, \{O. Yu\}",
note = "Publisher Copyright: {\textcopyright} 2018 The Author(s)",
year = "2018",
month = apr,
day = "10",
doi = "10.1016/j.physletb.2018.01.017",
language = "English",
volume = "779",
pages = "464--472",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
}