SCOAP3 Repository 9 records found  Search took 0.02 seconds. 
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/s10052-019-6844-y
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2. Role of a four-quark and a glueball state in pion-pion and pion-nucleon scattering / Lakaschus, Phillip ; Mauldin, Justin L.P. ; Giacosa, Francesco ; Rischke, Dirk H.
We consider the two-flavor version of the extended linear sigma model (eLSM), which contains (pseudo)scalar and (axial-)vector quark-antiquark mesons, a scalar glueball [predominantly corresponding to f0(1710)], as well as the nucleon and its chiral partner. [...]
Published in Physical Review C 99 (2019) 10.1103/PhysRevC.99.045203 arXiv:1807.03735
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3. Can the ψ(4040) explain the peak associated with Y (4008)? / Piotrowska, Milena ; Giacosa, Francesco ; Kovacs, Peter
We study the well-known 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/s10052-019-6615-9
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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 three-momentum p . [...]
Published in Advances in High Energy Physics 2018 (2018) 4672051 10.1155/2018/4672051 arXiv:1804.02728
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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 JP=0 are close to SU(3)V eigenstates; the η(958) meson is largely a singlet, and the η meson an octet. [...]
Published in Physical Review D 97 (2018) 10.1103/PhysRevD.97.091901 arXiv:1709.07454
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6. Influence of the axial anomaly on the decay N(1535)Nη / Olbrich, Lisa ; Zétényi, Miklós ; Giacosa, Francesco ; Rischke, Dirk H.
The decay width of N(1535)Nη is as large as that of N(1535)Nπ. [...]
Published in Phys. Rev. D 97 (2018) 10.1103/PhysRevD.97.014007 arXiv:1708.01061
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7. Excited scalar and pseudoscalar mesons in the extended linear sigma model / Parganlija, Denis ; Giacosa, Francesco
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). [...]
Published in EPJC 77 (2017) 450 10.1140/epjc/s10052-017-4962-y
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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) 2135-2150 10.5506/APhysPolB.47.2135 arXiv:1512.00232
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9. Masses of Heavy and Light Scalar Tetraquarks in a Non-relativistic Quark Model / Ghalenovi, Zahra ; Giacosa, Francesco ; Rischke, Dirk H.
Scalar tetraquark states are studied within the diquark--antidiquark picture in a non-relativistic approach. [...]
Published in Acta Physica Polonica B 47 (2016) 1185-1199 10.5506/APhysPolB.47.1185 arXiv:1507.03345
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3 Giacosa, F.
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