RT Journal Article
T1 π− p → η() π− p in the double-Regge region
A1 Bibrzycki, Ł.
A1 Fernández Ramírez, C.
A1 Mathieu, Vincent
A1 Mikhasenko, M.
A1 Albaladejo, M.
A1 Hiller Blin, A. N.
A1 Pilloni, A.
A1 Szczepaniak, A. P.
AB The production of η(′)π pairs constitutes one of the golden channels to search for hybrid exotics, with explicit gluonic degrees of freedom. Understanding the dynamics and backgrounds associated to η(′)π production above the resonance region is required to impose additional constraints to the resonance extraction. We consider the reaction π−p→η(′)π−p measured by COMPASS. We show that the data in 2.4<mη(′)π<3.0GeV can be described by amplitudes based on double-Regge exchanges. The angular distribution of the meson pairs, in particular in the η′π channel, can be attributed to flavor singlet exchanges, suggesting the presence of a large gluon content that couples strongly to the produced mesons.
PB Springer
SN 1434-6044
YR 2021
FD 2021-07-23
LK https://hdl.handle.net/20.500.14352/4984
UL https://hdl.handle.net/20.500.14352/4984
LA eng
NO Unión Europea. Horizonte 2020
NO Ministerio de Educación, Cultura y Deporte (Spain)
NO Comunidad de Madrid
DS Docta Complutense
RD 15 may 2024