Measurement of the charged pion electromagnetic form factor.
Separated longitudinal and transverse structure functions for the reaction 1H(e,e(')pi(+))n were measured in the momentum transfer region Q2 = 0.6--1.6 (GeV/c)(2) at a value of the invariant mass W = 1.95 GeV. New values for the pion charge form factor were extracted from the longitudinal cross section by using a recently developed Regge model. The results indicate that the pion form factor in this region is larger than previously assumed and is consistent with a monopole parametrization fitted to very low Q2 elastic data.
Volmer
J
J
NIKHEF, Amsterdam, The Netherlands.
Abbott
D
D
Anklin
H
H
Armstrong
C
C
Arrington
J
J
Assamagan
K
K
Avery
S
S
Baker
O K
OK
Blok
H P
HP
Bochna
C
C
Brash
E J
EJ
Breuer
H
H
Chant
N
N
Dunne
J
J
Eden
T
T
Ent
R
R
Gaskell
D
D
Gilman
R
R
Gustafsson
K
K
Hinton
W
W
Huber
G M
GM
Jackson
H
H
Jones
M K
MK
Keppel
C
C
Kim
P H
PH
Kim
W
W
Klein
A
A
Koltenuk
D
D
Liang
M
M
Lolos
G J
GJ
Lung
A
A
Mack
D J
DJ
McKee
D
D
Meekins
D
D
Mitchell
J
J
Mkrtchyan
H
H
Mueller
B
B
Niculescu
G
G
Niculescu
I
I
Pitz
D
D
Potterveld
D
D
Qin
L M
LM
Reinhold
J
J
Shin
I K
IK
Stepanyan
S
S
Tadevosyan
V
V
Tang
L G
LG
van der Meer
R L
RL
Vansyoc
K
K
Van Westrum
D
D
Vulcan
W
W
Wood
S
S
Yan
C
C
Zhao
W X
WX
Zihlmann
B
B