Early Tests of Scale Invariance in High-Energy Muon Scattering

D. J. Fox; C. Chang; K. W. Chen; A. Kotlewski; P. F. Kunz; L. N. Hand; S. Herb; S. C. Loken; A. Russell; Y. Watanabe; W. Vernon; M. Strovink

doi:10.1103/PhysRevLett.33.1504

Early Tests of Scale Invariance in High-Energy Muon Scattering

D. J. Fox, C. Chang, K. W. Chen, A. Kotlewski, P. F. Kunz, L. N. Hand, S. Herb, S. C. Loken, A. Russell, Y. Watanabe, W. Vernon, and M. Strovink

Phys. Rev. Lett. 33, 1504 – Published 16 December 1974

Abstract

Data are presented on deep inelastic scattering of 56.3- and 150-GeV $μ^{+}$ from an iron target at the Fermi National Acceleratory Laboratory. Observed event rates, averaged over a wide range in $ω$ , are compared to scale-invariance predictions for $q^{2}$ up to 44 ${(G e V / c)}^{2}$ . The ratio of the 150-GeV data to the scale-invariance prediction versus $q^{2}$ is not constant for all accepted $ω$ values. A fit of the form ${(1 + \frac{g^{2}}{Λ^{2}})}^{- 2}$ yields a lower limit of $Λ > 10$ GeV with 90% confidence, averaged over a restricted $ω$ range.

Received 1 August 1974

DOI:https://doi.org/10.1103/PhysRevLett.33.1504

Authors & Affiliations

D. J. Fox^*, C. Chang, K. W. Chen, A. Kotlewski, and P. F. Kunz^†

Physics Department, Michigan State University, East Lansing, Michigan 48824

L. N. Hand, S. Herb, S. C. Loken, A. Russell^‡, and Y. Watanabe

Laboratory of Nuclear Studies, Cornell University, Ithaca, New York 14850

W. Vernon

Physics Department, University of California, San Diego, La Jolla, California 92037

M. Strovink^§

Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08540

^*Deceased.
^†Now at Stanford Linear Accelerator Center, Stanford, Calif. 94305.
^‡Present address: Texaco Exploration Canada, Ltd., Calgary, Alta., Canada.
^§Visiting Assistant Professor, Cornell University, 1971-1972. Now at the Department of Physics and Lawrence Berkeley Laboratory, University of California, Berkeley, Calif. 94720.