Low mass enhanced probability of pion in hadronic matter due to its Landau cut contributions
نویسندگان
چکیده
منابع مشابه
Meson mass modification in strange hadronic matter
We investigate in stable strange hadronic matter (SHM) the modification of the masses of the scalar (σ, σ∗) and the vector (ω, φ) mesons. The baryon ground state is treated in the relativistic Hartree approximation in the nonlinear σ-ω and linear σ∗-φ model. In stable SHM, the masses of all the mesons reveal considerable reduction due to large vacuum polarization contribution from the hyperons ...
متن کاملOn the two-loop contributions to the pion mass
We derive a simplified representation for the pion mass to two loops in threeflavour chiral perturbation theory. For this purpose, we first determine the reduced expressions for the tensorial two-loop 2-point sunset integrals arising in chiral perturbation theory calculations. Making use of those relations, we obtain the expression for the pion mass in terms of the minimal set of master integra...
متن کاملLandau Ghosts and Anti-Ghosts in Condensed Matter and High Density Hadronic Matter
It is observed that the “ghost” (originally discovered by Landau in quantum electro-dynamics) and its counterparts in other theories are indeed ubiquitous as they occur in a one-loop approximation to any conventional (unbroken) gauge theory. The mechanism is first exposed in its generality via the Dyson equation and a simple but explicit example in condensed matter is provided through the stati...
متن کاملHadronic Contributions to Fundamental Constants
{ To perform model-independent calculations of the hadronic two-point contributions to several fundamental constants in physics: the electron and muon g ? 2 values 1] 2]; the mixing of the photon and the Z 0 boson in MMller scattering 3] 4]; the running of the ne structure constant (s) at Z 0 mass 5] 6]; the hyperrne structure of muonium (+ e ? bound state) 7] 8]; the energy shift in the muon-h...
متن کاملHadronic contributions to electroweak observables within DPT
Dispersive approach to quantum chromodynamics is applied to the assessment of hadronic contributions to electroweak observables. The employed approach merges the corresponding perturbative input with intrinsically nonperturbative constraints, which originate in the respective kinematic restrictions. The evaluated hadronic contributions to the muon anomalous magnetic moment and to the shift of t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 2014
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/41/9/095102