Onset of quark-hadron duality in pion electroproduction.
A large data set of charged-pion (pi+/-) electroproduction from both hydrogen and deuterium targets has been obtained spanning the low-energy residual-mass region. These data conclusively show the onset of the quark-hadron duality phenomenon, as predicted for high-energy hadron electroproduction. We construct several ratios from these data to exhibit the relation of this phenomenon to the high-energy factorization ansatz of electron-quark scattering and subsequent quark-->pion production mechanisms.
Navasardyan
T
T
Yerevan Physics Institute, Yerevan, Armenia.
Adams
G S
GS
Ahmidouch
A
A
Angelescu
T
T
Arrington
J
J
Asaturyan
R
R
Baker
O K
OK
Benmouna
N
N
Bertoncini
C
C
Blok
H P
HP
Boeglin
W U
WU
Bosted
P E
PE
Breuer
H
H
Christy
M E
ME
Connell
S H
SH
Cui
Y
Y
Dalton
M M
MM
Danagoulian
S
S
Day
D
D
Dodario
T
T
Dunne
J A
JA
Dutta
D
D
El Khayari
N
N
Ent
R
R
Fenker
H C
HC
Frolov
V V
VV
Gan
L
L
Gaskell
D
D
Hafidi
K
K
Hinton
W
W
Holt
R J
RJ
Horn
T
T
Huber
G M
GM
Hungerford
E
E
Jiang
X
X
Jones
M
M
Joo
K
K
Kalantarians
N
N
Kelly
J J
JJ
Keppel
C E
CE
Kubarovski
V
V
Li
Y
Y
Liang
Y
Y
Malace
S
S
Markowitz
P
P
McGrath
E
E
McKee
P
P
Meekins
D G
DG
Mkrtchyan
H
H
Moziak
B
B
Niculescu
G
G
Niculescu
I
I
Opper
A K
AK
Ostapenko
T
T
Reimer
P
P
Reinhold
J
J
Roche
J
J
Rock
S E
SE
Schulte
E
E
Segbefia
E
E
Smith
C
C
Smith
G R
GR
Stoler
P
P
Tadevosyan
V
V
Tang
L
L
Ungaro
M
M
Uzzle
A
A
Vidakovic
S
S
Villano
A
A
Vulcan
W F
WF
Wang
M
M
Warren
G
G
Wesselmann
F
F
Wojtsekhowski
B
B
Wood
S A
SA
Xu
C
C
Yuan
L
L
Zheng
X
X
Zhu
H
H