期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 11, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP11(2023)235
关键词
Baryon/Lepton Number Violation; Specific BSM Phenomenology
We study decoherence effects and phase corrections in heavy neutrino-antineutrino oscillation. Decoherence damps the oscillation pattern and enhances lepton number violation. We derive formulae for calculating decoherence effects and the phase shift, and find that the phase shift can be neglected in the parameter region under consideration.
We study decoherence effects and phase corrections in heavy neutrino-antineutrino oscillation (N (N) over bar Os), based on quantum field theory with external wave packets. Decoherence damps the oscillation pattern, making it harder to resolve experimentally. Additionally, it enhances lepton number violation (LNV) for processes in symmetry-protected low-scale seesaw models by reducing the destructive interference between mass eigenstates. We discuss a novel time-independent shift in the phase and derive formulae for calculating decoherence effects and the phase shift in the relevant regimes, which are the no dispersion regime and transverse dispersion regime. We find that the phase shift can be neglected in the parameter region under consideration since it is small apart from parameter regions with large damping. In the oscillation formulae, decoherence can be included by an effective damping parameter. We discuss this parameter and present averaged results, which apply to simulations of N (N) over bar Os in the dilepton-dijet channel at the HL-LHC. We show that including decoherence effects can dramatically change the theoretical prediction for the ratio of LNV over LNC events.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据