Energy dependence of nuclear transparency in C (p,2p) scattering.
The transparency of carbon for (p,2p) quasielastic events was measured at beam momenta ranging from 5.9 to 14.5 GeV/c at 90 degrees c.m. The four-momentum transfer squared (Q2) ranged from 4.7 to 12.7 (GeV/c)(2). We present the observed beam momentum dependence of the ratio of the carbon to hydrogen cross sections. We also apply a model for the nuclear momentum distribution of carbon to obtain the nuclear transparency. We find a sharp rise in transparency as the beam momentum is increased to 9 GeV/c and a reduction to approximately the Glauber level at higher energies.
Leksanov
A
A
Physics Department, Pennsylvania State University, University Park, Pennsylvania 16801, USA.
Alster
J
J
Asryan
G
G
Averichev
Y
Y
Barton
D
D
Baturin
V
V
Bukhtoyarova
N
N
Carroll
A
A
Heppelmann
S
S
Kawabata
T
T
Makdisi
Y
Y
Malki
A
A
Minina
E
E
Navon
I
I
Nicholson
H
H
Ogawa
A
A
Panebratsev
Y
Y
Piasetzky
E
E
Schetkovsky
A
A
Shimanskiy
S
S
Tang
A
A
Watson
J W
JW
Yoshida
H
H
Zhalov
D
D