Ch. Elster, H. Liu, T. Lin Fachruddin, W. Gloeckle H.Kamada, H.Witala A. Nogga, W. Schadow
description
Transcript of Ch. Elster, H. Liu, T. Lin Fachruddin, W. Gloeckle H.Kamada, H.Witala A. Nogga, W. Schadow
Ch. Elster, H. Liu, T. Lin
Fachruddin, W. Gloeckle
H.Kamada, H.Witala
A. Nogga, W. Schadow
2
3
1
2p2q
3
1
2
3p3q
1
2
3
1p1q
2312PP 2313PP
3N force integration => Two integrations of 2N force like
+ Two coordinate transformations.
MT2-I
MT2-II
MMT3-I
MMT3-II
-7.550-74.89567.309MMT3-B
-7.580-74.54766.967MT2-I
)(0 MeVH )(MeVV )(MeVE
MT2-I
MMT3-B
-1.90660.060.005.000
4/2g )(MeVm a)(MeVΛ
1U
10U
3
2
11
23
The Solution of Three-Body Amplitude T at Different Orders in Two-Body t -Matrix
1st order
2nd order
3rd order
4th order
Full Faddeev
Do these expansions at certain orders well approximate the full Faddeev solution ?
How do rescattering terms contribute to the total amplitude ?
Elastic Cross Section at Exact Backward Direction Convergence properties as a Function of Energies
A specific break-up configuration and measurement:
the neutron is ejected at extreme backward angles, and the two protons at extreme forward angles, only events with small PP relative energy are measured
At 1.0 GeV scale: partial sum up to 3rd order is necessary
Convergence improved by going higher orders at backward angle !