Semi-inclusive lambda and K(S) production in p-Au collisions at 17.5 GeV/c
The first detailed measurements of the centrality dependence of strangeness production in p-A collisions are presented. Lambda and K(S) dn/dy distributions from 17.5 GeV/ c p-Au collisions are shown as a function of "grey" track multiplicity and the estimated number of collisions, nu, made by the proton. The nu dependence of the Lambda yield deviates from a scaling of p-p data by the number of participants, increasing faster than this scaling for nu</=5 and saturating for larger nu. A slower growth in K(S) multiplicity with nu is observed, consistent with a weaker nu dependence of K&Kmacr; production than YK production.
Chemakin
I
Columbia University, New York, New York 10027, USA.
Cianciolo
V
Cole
BA
Fernow
R
Frawley
AD
Gilkes
M
Gushue
S
Hartouni
EP
Hiejima
H
Justice
M
Kang
JH
Kirk
H
Maeda
N
McGrath
RL
Mioduszewski
S
Morrison
D
Moulson
M
Namboodiri
MN
Rai
G
Read
K
Remsberg
L
Rosati
M
Shin
Y
Soltz
RA
Sorensen
S
Thomas
JH