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dc.contributor.advisorAdelberger, Eric Gen_US
dc.contributor.authorTerrano, William Anthonyen_US
dc.date.accessioned2015-09-29T21:28:40Z
dc.date.available2015-09-29T21:28:40Z
dc.date.submitted2015en_US
dc.identifier.otherTerrano_washington_0250E_14949.pdfen_US
dc.identifier.urihttp://hdl.handle.net/1773/34125
dc.descriptionThesis (Ph.D.)--University of Washington, 2015en_US
dc.description.abstractThe interactions of intrinsic particle spin offer a powerful window into important aspects of new physics, such as hidden high energy symmetries and CP-violation. This dissertation describes a new spin 20-pole torsion pendulum made with alternating high and low spin-density magnets. We operated the pendulum 4.1\,mm from a spin source and 2.0\,mm from a mass source, reaching the thermal noise level of the torsion fiber in all of our experiments. This allowed us to probe electron spin \dipdip and \mondip interactions to greater sensitivities and over shorter distances than any previously test. We found no evidence of new interactions. Our \mondip experiments set new constraints for exchange boson masses of $\sim$ 1- 500 $\mu$eV. Our \dipdip experiments set new constraints for all interaction lengths, down to 10$^{-15}$ of electromagnetic strength at infinite range.en_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.rightsCopyright is held by the individual authors.en_US
dc.subjectBeyond the Standard Model; Spin Interactions; Torsion Pendulumsen_US
dc.subject.otherPhysicsen_US
dc.subject.otherphysicsen_US
dc.titleTorsion Pendulum Searches for Macroscopic Spin-Interactions as a Window on New Physicsen_US
dc.typeThesisen_US
dc.embargo.termsOpen Accessen_US


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