Charm production by muons and its role in scale noninvariance

G. D. Gollin, F. C. Shoemaker, P. Surko, A. R. Clark, K. J. Johnson, L. T. Kerth, S. C. Loken, T. W. Markiewicz, P. D. Meyers, W. H. Smith, M. Strovink, W. A. Wenzel, R. P. Johnson, C. Moore, M. Mugge, R. E. Shafer

Research output: Contribution to journalArticle

Abstract

Interactions of 209-GeV muons in the multimuon spectrometer at Fermilab have yielded more than 8×104 events with two muons in the final state. After reconstruction and cuts, the data contain 20 072 events with (8110)% attributed to the diffractive production of charmed states decaying to muons. The cross section for diffractive charm muoproduction is 6.9-1.4+1.9 nb where the error includes systematic uncertainties. Extrapolated to Q2=0 with (Q2)=(0)(1+Q22)-2, the effective cross section for 178- (100-) GeV photons is 750-130+180 (560120200) nb and the parameter is 3.30.2 (2.90.2) GeV/c. The dependence of the cross section is similar to that of the photongluon-fusion model. Okubo-Zweig-Iizuka selection rules and unitarity allow the muon data to set a 90%-confidence lower limit on the N total cross section of 0.9 mb. A first determination of the structure function F2(cc») for diffractive charm production indicates that charm accounts for approximately 13 of the scale noninvariance observed in inclusive muon-nucleon scattering at low Bjorken x.

Original languageEnglish (US)
Pages (from-to)559-589
Number of pages31
JournalPhysical Review D
Volume24
Issue number3
DOIs
StatePublished - 1981
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Gollin, G. D., Shoemaker, F. C., Surko, P., Clark, A. R., Johnson, K. J., Kerth, L. T., Loken, S. C., Markiewicz, T. W., Meyers, P. D., Smith, W. H., Strovink, M., Wenzel, W. A., Johnson, R. P., Moore, C., Mugge, M., & Shafer, R. E. (1981). Charm production by muons and its role in scale noninvariance. Physical Review D, 24(3), 559-589. https://doi.org/10.1103/PhysRevD.24.559