Constraints on Hadronic Contributions to LHAASO Sources with Neutrino Observations

Hadronic 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...

Hadronic 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...

Constraints on Neutrino Mixing

We explore the implications of imposing the constraint that two neutrino flavors (which for definiteness we take to be νμ and ντ ) are similarly coupled to the mass basis in addition to the unitarity constraints. We allow three active and an arbitrary number of sterile neutrinos. We show that in this scheme one of the mass eigenstates decouples from the problem, reducing the dimension of the fl...

Charge Symmetry Violating Contributions to Neutrino Reactions

The NuTeV group has measured charged and neutral current reactions for neutrinos on iron targets. Ratios of these cross sections provide an independent measurement of the Weinberg angle. The NuTeV value for sin θW is three standard deviations larger than the value measured in other electroweak processes. By reviewing theoretical estimates of parton charge symmetry violation (CSV), we study CSV ...

Gallex Neutrino Observations and Its Implications on Solar Neutrino