اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدInterference between the Atmospheric and Solar Oscillation Amplitudes
96
0
0.0
(
0
)
اسأل ChatGPT حول البحث
ﻻ يوجد ملخص باللغة العربية
We propose to detect the interference effect between the atmospheric-scale and solar-scale waves of neutrino oscillation, one of the key consequences of the three-generation structure of leptons. In vacuum, we show that there is a natural and general way of decomposing the oscillation amplitude into these two oscillation modes. The nature of the interference is cleanest in the $bar{ u}_e$ disappearance channel since it is free from the CP-phase $delta$. We find that the upcoming JUNO experiment offers an ideal setting to observe this interference with more than $4,sigma$ significance, even under conservative assumptions about the systematic uncertainties.
قيم البحث
اقرأ أيضاً
Observation of the interference between the atmospheric and solar oscillation waves with the correct magnitude would provide another manifestation of the three-generation structure of leptons. As a prerequisite for such analyses we develop a method f
or decomposing the oscillation $S$ matrix into the atmospheric and solar amplitudes. Though the similar method was recently proposed successfully in vacuum, once an extension into the matter environment is attempted, it poses highly nontrivial problems. Even for an infinitesimal matter potential, inherent mixture of the atmospheric and solar oscillation waves occurs, rendering a simple extension of the vacuum definition untenable. We utilize general kinematic structure as well as analyses of the five perturbative frameworks, in which the nature of matter-dressed atmospheric and solar oscillations are known, to understand the origin of the trouble, how to deal with the difficulty, and to grasp the principle of decomposition. Then, we derive the amplitude decomposition formulas in these frameworks, and discuss properties of the decomposed probabilities. We mostly discuss the $ u_{mu} rightarrow u_{e}$ channel, but a comparison with the $ u_{mu} rightarrow u_{tau}$ channel reveals an interesting difference.
Nambu Quantum Mechanics, proposed in Phys. Lett. B536, 305 (2002), is a deformation of canonical Quantum Mechanics in which only the time-evolution of the phases of energy eigenstates is modified. We discuss the effect this theory will have on oscill
ation phenomena, and place a bound on the deformation parameters utilizing the data on the atmospheric neutrino mixing angle $theta_{23}$.
98 -
A.N. Petrov
, L.V. Skripnikov (National Research Center Kurchatovn Institute B.P. Konstantinov Petersburg Nuclear Physics Institute
, Gatchina
2018
Calculations of Stark interference between $E1$ and $M1$ transition amplitudes on the $H^3Delta_1$ to $C^1Pi$ transition in ThO is performed. Calculations are required for estimations of systematic errors in the experiment for electron electric dipol
e (eEDM) moment search due to imperfections in laser beams used to prepare the molecule and read out the (eEDM) signal.
Recent Super-Kamiokande data on the atmospheric neutrino anomaly are used to test various mechanisms for neutrino oscillations. It is found that the current atmospheric neutrino data alone cannot rule out any particular mechanism. Future long-baselin
e experiments should play an important role in identifying the underlying neutrino oscillation mechanism.
The India-based Neutrino Observatory (INO) will host a 50 kt magnetized iron calorimeter (ICAL@INO) for the study of atmospheric neutrinos. Using the detector resolutions and efficiencies obtained by the INO collaboration from a full-detector GEANT4-
based simulation, we determine the reach of this experiment for the measurement of the atmospheric neutrino mixing parameters ($sin^2 theta_{23}$ and $|Delta m_{32}^2 |$). We also explore the sensitivity of this experiment to the deviation of $theta_{23}$ from maximal mixing, and its octant.
سجل دخول لتتمكن من نشر تعليقات
التعليقات
جاري جلب التعليقات
سجل دخول لتتمكن من متابعة معايير البحث التي قمت باختيارها
