Charm Photoproduction Cross-Section At 20 Gev
K. Abe, T. Bacon,J. Ballam,L. Berny,A. Bevan,H. Bingham,J. Brau,K. Braune,D. Brick,W. Bugg,J. Butler,W. Cameron,J. Carroll,C. Cautis,J. Chima,H. Cohn,D. Colley,G. Condo,S. Dado,R. Diamond,P. Dornan,R. Erickson,T. Fieguth,R. Field,L. Fortney,B. Franek,N. Fujiwara,R. Gearhart, T. Glanzman,J. Goldberg,G. Gopal, A. Goshaw,E. Hafen,V. Hagopian,G. Hall,E. Hancock,T. Handler,H. Hargis,E. Hart,P. Haridas,K. Hasegawa,T. Hayashino,D. Huang,R. Hulsizer,S. Isaacson,M. Jobes,G. Kalmus,D. Kelsey,J. Kent,T. Kitagaki,J. Lannutti,A. Levy,P. Lucas, M. MacDermott,W. Mann,T. Maruyama,R. Merenyi,R. Milburn,C. Milstene,K. Moffeit,J. Murray, A. Napier,S. Noguchi,F. Ochiai,S. O'Neale,A. Palounek,I. Pless,M. Rabin,P. Rankin,W. Robertson,A. Rogers,E. Ronat,H. Rudnicka,T. Sato, J. Schneps,S. Sewell,J. Shank,A. Shapiro,C. Sinclair, R. Sugahara,A. Suzuki,K. Takahashi,K. Tamai, S. Tanaka,S. Tether,H. Wald,W. Walker,M. Widgoff,C. Wilkins,S. Wolbers,C. Woods,Y. Wu,A. Yamaguchi,R. Yamamoto,S. Yamashita,G. Yekutieli,Y. Yoshimura,G. Yost,H. Yuta PHYSICAL REVIEW LETTERS（1983）
摘要
Forty-seven charm events have been observed in an exposure of the 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 63−28+33 nb.Received 2 May 1983DOI:https://doi.org/10.1103/PhysRevLett.51.156©1983 American Physical Society
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