CHARM PHOTOPRODUCTION CROSS-SECTION AT 20-GeV

K. Abe,R K Yamamoto,T. Handler,L.R. Fortney,A Napier,James Brau,R. Sugahara,C. Milstene,K.C. Moffeit,A. Lévy,John Butler,T. Maruyama,I. A. Pless,Yuying Wu,R. H. Milburn,C. V. Cautis,E. Hafen,T. Sato,H. O. Cohn,M. Widgoff,S. Yamashita,K. Hasegawa,G. Hall,S. Dado,N. Fujiwara,J. E. Lannutti,M Jobes,H.J. Hargis,T. Glanzman,J. Ballam,Monroe S. Rabin,J. Schneps,J Shank,Y. Yoshimura,S. Tanaka,P. Rankin,T.H. Fieguth,D. Kelsey,G.P. Yost,H. Rudnicka,C.A. Woods,B. Franek,W. Cameron,R. Merenyi,S. Isaacson,L. Berny,M. MacDermott,C. G. Wilkins,T. Kitagaki,R. Gearhart,W D Walker,K. Takahashi,G. T. Condo,S.J. Sewell,J.T. Carroll,H. Yuta,G. Yekutieli,S. Noguchi,D.-Q. Huang,S. Wolbers,H.H. Bingham,K. Tamai,G. Kalmus,A. Yamaguchi,A. M. Shapiro,Edwin R. Hancock,P. Lucas,T. Hayashino,J J Murray,H.B. Wald,J. S. Chima,A. T. Goshaw,R. I. Hulsizer,R. Erickson,P J Dornan,J Kent,A. Suzuki,Charles K. Sinclair,V. Hagopian,J. Goldberg,D. C. Colley,G.P. Gopal,A. H. Rogers,P. Haridas,W A Mann,W. Bugg,F. Ochiai,K. Braune,A.P.T. Palounek,R.N. Diamond,W. J. Robertson,A.V. Bevan,E.L. Hart,S. Tether,D. Brick,S. O'Neale,R. C. Field,E.E. Ronat,T.C. Bacon

CHARM PHOTOPRODUCTION CROSS-SECTION AT 20-GeV

1983

K. Abe
R K Yamamoto
T. Handler
L.R. Fortney
A Napier
James Brau
R. Sugahara
C. Milstene
K.C. Moffeit
A. Lévy
John Butler
T. Maruyama
I. A. Pless
Yuying Wu
R. H. Milburn
C. V. Cautis
E. Hafen
T. Sato
H. O. Cohn
M. Widgoff
S. Yamashita
K. Hasegawa
G. Hall
S. Dado
N. Fujiwara
J. E. Lannutti
M Jobes
H.J. Hargis
T. Glanzman
J. Ballam
Monroe S. Rabin
J. Schneps
J Shank
Y. Yoshimura
S. Tanaka
P. Rankin
T.H. Fieguth
D. Kelsey
G.P. Yost
H. Rudnicka
C.A. Woods
B. Franek
W. Cameron
R. Merenyi
S. Isaacson
L. Berny
M. MacDermott
C. G. Wilkins
T. Kitagaki
R. Gearhart
W D Walker
K. Takahashi
G. T. Condo
S.J. Sewell
J.T. Carroll
H. Yuta
G. Yekutieli
S. Noguchi
D.-Q. Huang
S. Wolbers
H.H. Bingham
K. Tamai
G. Kalmus
A. Yamaguchi
A. M. Shapiro
Edwin R. Hancock
P. Lucas
T. Hayashino
J J Murray
H.B. Wald
J. S. Chima
A. T. Goshaw
R. I. Hulsizer
R. Erickson
P J Dornan
J Kent
A. Suzuki
Charles K. Sinclair
V. Hagopian
J. Goldberg
D. C. Colley
G.P. Gopal
A. H. Rogers
P. Haridas
W A Mann
W. Bugg
F. Ochiai
K. Braune
A.P.T. Palounek
R.N. Diamond
W. J. Robertson
A.V. Bevan
E.L. Hart
S. Tether
D. Brick
S. O'Neale
R. C. Field
E.E. Ronat
T.C. Bacon

Forty-seven charm events have been observed in an exposure of SLAC Hybrid Facility bubble chamber to a 20-GeV backward-scattered laser beam. Thirty-seven events survive all the necessary cuts imposed. Based on this number the total charm cross section is calculated to be 63/sub -/28/sup +33/ nb.

Keywords:

Laser
Particle detector
Atomic physics
Measuring instrument
Particle identification
Beam (structure)
Scattering
Particle physics
Nuclear physics
Physics
Elementary particle
Bubble chamber
meson production
laser beams
Beam laser

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