Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Enrico Meggiolaro"'
Autor:
Giacomo Landini, Enrico Meggiolaro
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 4, Pp 1-11 (2020)
Abstract We investigate the most interesting decay processes involving axions, photons and the lightest pseudoscalar mesons, making use of a chiral effective Lagrangian model with $$L=3$$ L=3 light quark flavors, which also includes the flavor-single
Externí odkaz:
https://doaj.org/article/99dd6357e59045fdb16d971b9ef47118
Autor:
Matteo Giordano, Enrico Meggiolaro
Publikováno v:
Physics Letters B, Vol 744, Iss , Pp 263-267 (2015)
We discuss how hadronic total cross sections at high energy depend on the details of QCD, namely on the number of colours Nc and the quark masses. We find that while a “Froissart”-type behaviour σtot∼Blog2s is rather general, relying only o
Externí odkaz:
https://doaj.org/article/391bf6be13a14df4b343e551b1142c77
Autor:
Enrico Meggiolaro, Nicoletta Carabba
Publikováno v:
Physical Review D. 105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e715a04044f97768f639531d838dfc30
https://doi.org/10.1103/physrevd.105.054034
https://doi.org/10.1103/physrevd.105.054034
QCD axion and topological susceptibility in chiral effective Lagrangian models at finite temperature
Autor:
Enrico Meggiolaro, Salvatore Bottaro
Publikováno v:
Physical Review
In this work we compute the axion mass and, from this (exploiting a well-known relation), we also derive an expression for the QCD topological susceptibility in the finite-temperature case, both below and above the chiral phase transition at $T_c$, m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39ad39ff0da7bec956519e081f39b188
http://hdl.handle.net/11568/1052794
http://hdl.handle.net/11568/1052794
Autor:
Enrico Meggiolaro
Publikováno v:
Physical Review
In this work, extending a previous study at zero temperature ($T=0$), we perform a systematic study of the modifications to the QCD vacuum energy density $\epsilon_{vac}$ in the finite-temperature case, above the chiral transition at $T_c$, caused by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a4f1a6add2322e6e0eb860ed4d29637
http://arxiv.org/abs/1903.10307
http://arxiv.org/abs/1903.10307
Autor:
Enrico Meggiolaro, Giacomo Landini
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 4, Pp 1-11 (2020)
European Physical Journal
European Physical Journal
We investigate the most interesting decay processes involving axions, photons and the lightest pseudoscalar mesons, making use of a chiral effective Lagrangian model with $L=3$ light quark flavors, which also includes the flavor-singlet pseudoscalar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c52b7b7bbf1caa71b5cc1217212362cb
Autor:
Enrico Meggiolaro
Publikováno v:
Nuclear and Particle Physics Proceedings. :1502-1508
We analyze (using a chiral effective Lagrangian model) the scalar and pseudoscalar meson mass spectrum of QCD at finite temperature, above the chiral transition at $T_c$, looking, in particular, for signatures of a possible breaking of the $U(1)$ axi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be18a65257e4f8b2905d0654a6826e56
https://doi.org/10.1016/j.nuclphysbps.2015.09.243
https://doi.org/10.1016/j.nuclphysbps.2015.09.243
Autor:
Francesco Luciano, Enrico Meggiolaro
Publikováno v:
Physical Review
We perform a systematic study of the modifications to the QCD vacuum energy density $\epsilon_{vac}$ in the zero-temperature case ($T=0$) caused by a small, but non-zero, value of the parameter $\theta$, using different effective Lagrangian models wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d139503bbc85f2286d898ffb89306aa4
Publikováno v:
Physical Review D. 96
In the present investigation we study the leading and subleading high-energy behavior of hadron-hadron total cross sections using a best-fit analysis of hadronic scattering data. The parametrization used for the hadron-hadron total cross sections at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f79f0fc5f2d3c6ba2a653ee20d7e6387
https://doi.org/10.1103/physrevd.96.034015
https://doi.org/10.1103/physrevd.96.034015
Publikováno v:
Proceedings of 38th International Conference on High Energy Physics — PoS(ICHEP2016).
We present the results of an exploratory study (by means of Monte Carlo simulations on the lattice) of the properties of the gauge-invariant two-point correlation functions of the gauge-field strengths for $N_f=2$ QCD at zero temperature and in the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5645de1b18ea950958bc6d3003dc578a
https://doi.org/10.22323/1.282.0640
https://doi.org/10.22323/1.282.0640