New analysis of ηπ tensor resonances measured at the COMPASS experiment

Sonraí bibleagrafaíochta
Parent link:	Physics Letters B Vol. 779.— 2018.— P. 464-472
Rannpháirtithe:	Jackura A. Andrew, Fernandez-Ramirez C. Cesar, Fox G. Ch. Geoffrey Charles, Dusaev R. R. Renat Ramilyevich, Levchenko E. A. Evgeny Anatolievich, Mamon S. A. Sergey Aleksandrovich, Vasilishin B. I. Bogdan Ivanovich, Burtsev V. E. Vitaly Evgenjevich, Chumakov A. G. Aleksandr Grigorjevich, Lyubovitskiy (Lyubovitskij) V. E. Valery Efimovich
Achoimre:	Title screen 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.
Teanga:	Béarla
Foilsithe / Cruthaithe:	2018
Ábhair:	электронный ресурс труды учёных ТПУ резонансы COMPASS волны тензоры
Rochtain ar líne:	https://doi.org/10.1016/j.physletb.2018.01.017
Formáid:	Leictreonach Caibidil leabhair
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666925

Cur síos
Achoimre:	Title screen 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.
DOI:	10.1016/j.physletb.2018.01.017

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