1.

Thermal contribution of unstable states
/ Lo, Pok Man ; Giacosa, Francesco
Within the framework of the Lee model, we analyze in detail the difference between the energy derivative of the phase shift and the standard spectral function of the unstable state. [...]
Published in EPJC 79 (2019) 336
10.1140/epjc/s100520196844y
Fulltext: XML PDF (PDFA);

2.

Role of a fourquark and a glueball state in pionpion and pionnucleon scattering
/ Lakaschus, Phillip ; Mauldin, Justin L.P. ; Giacosa, Francesco ; Rischke, Dirk H.
We consider the twoflavor version of the extended linear sigma model (eLSM), which contains (pseudo)scalar and (axial)vector quarkantiquark mesons, a scalar glueball [predominantly corresponding to ${f}_{0}\left(1710\right)]$, as well as the nucleon and its chiral partner. [...]
Published in Physical Review C 99 (2019)
10.1103/PhysRevC.99.045203
arXiv:1807.03735
Fulltext: PDF XML;

3.

Can the ψ(4040) explain the peak associated with Y (4008)?
/ Piotrowska, Milena ; Giacosa, Francesco ; Kovacs, Peter
We study the wellknown resonance ψ(4040) , corresponding to a 33S1 charm–anticharm vector state ψ(3S) , within a QFT approach, in which the decay channels into DD , D∗D , D∗D∗ , DsDs and Ds∗Ds are considered. [...]
Published in EPJC 79 (2019) 98
10.1140/epjc/s1005201966159
Fulltext: XML PDF (PDFA);

4.

QFT Derivation of the Decay Law of an Unstable Particle with Nonzero Momentum
/ Giacosa, Francesco
We present a quantum field theoretical derivation of the nondecay probability of an unstable particle with nonzero threemomentum $\mathbf{p}$ . [...]
Published in Advances in High Energy Physics 2018 (2018) 4672051
10.1155/2018/4672051
arXiv:1804.02728
Fulltext: PDF XML PDF (PDFA);

5.

How the axial anomaly controls flavor mixing among mesons
/ Giacosa, Francesco ; Koenigstein, Adrian ; Pisarski, Robert D.
It is well known that, because of the axial anomaly in QCD, mesons with ${J}^{P}={0}^{}$ are close to $SU(3{)}_{V}$ eigenstates; the ${\eta}^{\prime}\left(958\right)$ meson is largely a singlet, and the $\eta $ meson an octet. [...]
Published in Physical Review D 97 (2018)
10.1103/PhysRevD.97.091901
arXiv:1709.07454
Fulltext: PDF XML;

6.

Influence of the axial anomaly on the decay $N\left(1535\right)\to N\eta $
/ Olbrich, Lisa ; Zétényi, Miklós ; Giacosa, Francesco ; Rischke, Dirk H.
The decay width of $N\left(1535\right)\to N\eta $ is as large as that of $N\left(1535\right)\to N\pi $. [...]
Published in Phys. Rev. D 97 (2018)
10.1103/PhysRevD.97.014007
arXiv:1708.01061
Fulltext: XML PDF;

7.

Excited scalar and pseudoscalar mesons in the extended linear sigma model
/ Parganlija, Denis ; Giacosa, Francesco
We present an indepth study of masses and decays of excited scalar and pseudoscalar q¯q states in the Extended Linear Sigma Model (eLSM). [...]
Published in EPJC 77 (2017) 450
10.1140/epjc/s100520174962y
Fulltext: XML PDF (PDFA);

8.

Decay Law and Time Dilatation
/ Giacosa, Francesco
We study the decay law for a moving unstable particle. [...]
Published in Acta Physica Polonica B 47 (2016) 21352150
10.5506/APhysPolB.47.2135
arXiv:1512.00232
Fulltext: PDF PDF (PDFA);

9.

Masses of Heavy and Light Scalar Tetraquarks in a Nonrelativistic Quark Model
/ Ghalenovi, Zahra ; Giacosa, Francesco ; Rischke, Dirk H.
Scalar tetraquark states are studied within the diquarkantidiquark picture in a nonrelativistic approach. [...]
Published in Acta Physica Polonica B 47 (2016) 11851199
10.5506/APhysPolB.47.1185
arXiv:1507.03345
Fulltext: PDF PDF (PDFA);
