W-D. Nowak - INFN

HERMES Combined BSA & BCA Results
cos 0φ
LU,DVCS
A
sin φ
LU,DVCS
A
sin 2φ
LU,DVCS
A
Res. frac
0.2
0
-0.2
0.2
0
-0.2
-0.4
0.4
0.2
0
-0.2
0.4
0.3
0.2
0.1
0
3.4 % scale
uncertainty
overall
0.2
0
-0.2
0.2
cos 0φ
LU,I
0
A
-0.2
-0.4
0.4
0.2
sin φ
LU,I
A
0
-0.2
0.4
0.2
0
-0.2
HERMES PRELIMINARY
3.4 % scale
uncertainty
0 0.2 0.4 0.6
0
-0.2
-0.4
-0.6
0 0.2 0.4 0.60 0.2 0.1 0.4 0.2 0.6 0.3
0.4
0.4
0.2
0
0.3 0
0.3
0.2
0.2 0
-0.2
0.1 -0.2
0.1
0
0 0.2 0.4 0.6 0
-0.2
-0.4
-0.4
2
sin 2φ
LU,I
A
Res. frac
0.4
0.3
0.2
0.1
0
overall
0.4
0.2
0
-0.2
0
-0.2
-0.4
-0.6
cos 0φ
C
A
-t[GeV
0.2
0
-0.2
0.2
0
-0.2
-0.4
0.4
0.2
0
-0.2
]
VGG Regge, D
VGG Fact., D
HERMES PRELIMINARY
0.1 0.2 0.3
0.2
0
-0.2
0.2
0
-0.2
-0.4
0.4
0.2
0
-0.2
Dual Regge/Fact.
2 4 6 8 10
0.1 2 0.24 6 0.3 8 10 2 4 6 8 10
0.4
0.2
VGG Regge, D
0
HERMES 0.3 PRELIMINARY
VGG Regge, no D
0.2
0
0.2
0
0
0.1
-0.2
-0.2
0.1 0.3
0
-0.2
-0.4
x b
2 4
-0.2
6 8-0.4
2
10
2
0 0.2 0.4 0.6
0.4
0.4
0.2
0.2
0.3
0.3
0.2
0.2
0
0
0.1
0.1
0
0
0-0.2
0.2 0.4 -0.2 0.6
2
0.1
0.1
cos φ
C
A
cos 2φ
C
A
cos 3φ
C
A
c
0
-0.1
-0.2
0.1
0
-0.1
-0.2
-t[GeV
0
-0.1
-0.2
0.1
0
-0.1
-0.2
0.4
0.2
0
-0.2
0
-0.2
-0.4
-0.6
]
VGG Regge, no D
VGG Fact., no D
-0.2
Q [GeV
0.1 0.2 0.3
0.4
0.2
0.3
0.2
0
0.1
0
0.1 0.2 -0.2 0.3
0.1 x b
0 0.2 0.4 0.6
0 0.2 0.4 0.6
0 0.2 0.4 0.6
0
-0.1
-0.2
0.1
0
0.4
0.2
0
0
-0.2
-0.4
-0.6
]
Dual Regge
Dual Fact.
2 4 6 8 10
2 4 6 2
-0.2
0.1
10 2
0.1 0.2 0.3
0.1 0.2 0.3
0.1 0.2 0.3
0.2
Dual Regge
Q [GeV
-0.1
-0.1
0 < −t < 0.7 0.03 < x
-0.2 B < 0.35 1 < Q 2 < 10
-0.2
Wolf-Dieter Nowak, 0.4
0.4
0.4
Perspectives 0.4 in Hadronic Physics, May 15, 2008 – p. 13
0
-0.2
0.2
0
-0.1
-0.2
0.1
]
BSA
const.term
∝ F 1 ImH
Dual Fact.
2 4 6 8 10
2 4 6 8 10
2 4 6 8 10
BCA
∝ −A cos φ
C
∝ F 1 ReH
HT
HT