TY  - JOUR
A1  - Parganlija, Denis
A1  - Giacosa, Francesco
T1  - Excited scalar and pseudoscalar mesons in the extended linear sigma model
T2  - The European physical journal. C, Particles and fields
N2  - We present an in-depth study of masses and decays of excited scalar and pseudoscalar q¯q states in the Extended Linear Sigma Model (eLSM). The model also contains ground-state scalar, pseudoscalar, vector and axial-vector mesons. The main objective is to study the consequences of the hypothesis that the f0(1790) resonance, observed a decade ago by the BES Collaboration and recently by LHCb, represents an excited scalar quarkonium. In addition we also analyse the possibility that the new a0(1950) resonance, observed recently by BABAR, may also be an excited scalar state. Both hypotheses receive justification in our approach although there appears to be some tension between the simultaneous interpretation of f0(1790)/a0(1950) and pseudoscalar mesons η(1295), π(1300), η(1440) and K(1460) as excited q¯q states.
Y1  - 2017
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/43946
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-439460
SN  - 1434-6052
SN  - 1434-6044
N1  - Open Access: This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecomm ons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3.
VL  - 77
IS  - 7, Art. 450
SP  - 1
EP  - 25
PB  - Springer
CY  - Berlin ; Heidelberg
ER  -