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Signatures of an extra Z/sup 0/ gauge boson in elastic e/sup -/-proton scattering

Journal Article · · Phys. Rev. D; (United States)
We consider popular extensions of the standard model which include new heavy Z/sup 0/ gauge bosons, and examine their effect on parity violation in elastic electron-proton scattering at intermediate energies. These extensions all involve an effective low-energy symmetry group SU(3)/sub C/xSU(2)/sub L/ xU(1)/sub Y/x(U)1/sub Y//sub '/. In several special cases motivated by grand unified theories based on SO(10) and E/sub 6/, we find that a parity measurement with an accuracy of a few percent would raise the existing mass bounds on a heavy Z/sup 0/, and would reduce the range of allowed mixing angles by as much as a factor of 5. In some cases, the lower bound on a heavy Z/sup 0/ mass would be raised by more than 100 GeV over current limits.
Research Organization:
Continuous Electron Beam Accelerator Facility, 12070 Jefferson Avenue, Newport News, Virginia 23606
OSTI ID:
6536768
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 39:1; ISSN PRVDA
Country of Publication:
United States
Language:
English

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