Toyota 　 National 　 College 　 of 　 Technology

A.TakamuraCollaboration with

K.Kimura and T.Yoshikawa

GLoBES 2007

Measuring the Leptonic CP Phase in Oscillations

1/24-1/26 at Heidelberg

Outline of this talk

As a main result, degeneracy on CP phase

can be solved

GLoBES

Three flavor effect in disappearance

channel

Energy and baseline length with large CP

phase effect

Recent MINOS results and deviation from maximal

mixing

Recent MINOS results

Atmospheric neutrino

NuMI beam

Results

Discovery potential of 1-3 mixing angle

Double-Chooz experiment

T2K experiment

Well known result

Deviation from maximal 2-3 mixing angle

Small parameter

Correction by deviation

Important point

Next explanation

As a main result, degeneracy on CP phase

can be solved

GLoBES

Three flavor effect in disappearance

channel

Energy and baseline length with large CP

phase effect

Recent MINOS results and deviation from maximal

mixing

Three flavor effect such as CP violation

Two small parameters

Three kinds of corrections

Important points

CP violation in superbeam experiment

General feature on CP dependence

Magnitude of each coefficient

Unitarity relations Results

Estimation of Energy that CP violation is large

Resonance energies

Energy with large CP violation

Effective masses

Well known results

Next explanation

As a main result, degeneracy on CP phase

can be solved

GLoBES

Three flavor effect in disappearance

channel

Energy and baseline length with large CP

phase effect

Recent MINOS results and deviation from maximal

mixing

Tool to study magnitude of CP violation

Max and Min of probability

Indices as a function

No fake CP violation

Results

Search of regions with large indices

Region with large

Region with large

Parameter set

CP phase effect caused by CP even term

Change of probability

CP even term

Results

Main result

As a main result, degeneracy on CP phase

can be solved

Three flavor effect in disappearance

channel

Energy and baseline length with large CP

phase effect

Recent MINOS results and deviation from maximal

mixing

GLoBES

GLoBES software as a useful tool

GLoBES software

http://users.physik.tu-muenchen.de/globes/ Purpose

Experimental setup

Usefulness of disappearance channel

Electron only

Muon only

1-3 mixing dependence on CP phase

Electron only

Electron and Muon

Results

Summary

Large CP violation

Region with large Results