Potential of octant degeneracy resolution in JUNO

Abstract

This research continues to focus on the idea using cyclotronic antineutrino source for purposes of neutrino physics. Long baseline experiments suffer from degeneracies and correlations between Θ 23 , δ CP and the mass hierarchy. However the combination of a superconductive cyclotron and a big liquid scintillator detector like JUNO in a medium baseline experiment, which doesn't depend on the mass hierarchy, may allow us to determine whether the position of the mixing angle Θ 23 is in the lower octant or the upper octant. Such an experiment would improve the precision of the Θ 23 measurement to a degree which depends on the CP-phase.

Higgs-strahlung boson production in the presence of a circularly polarized laser field

“…Above the threshold of ZH ( √ s = 215 GeV), the cross section of Higgs strahlung increases rapidly and reaches its maximum at 250 GeV, then it decreases asymptotically as (1/s) like any typical s-channel. Therefore, the vector boson fusion will become the dominant contribution to the Higgs production far beyond the ZH threshold ( √ s ≥ 500 GeV) [26,27]. The quantity that measures the ability of a particle collider to produce the required number of events (useful interactions) is called the luminosity and it is defined as the proportionality factor between the number of events per second dR/dt and the total cross section such as: dR/dt = L × σ where L and σ are the luminosity of the collider and the total cross section, respectively.…”