A direct search for Dirac magnetic monopoles
Name
61709185-MIT.pdf
Description
Full printable version
Size
6.08 MB
Format
Adobe PDF
Checksum (MD5)
a2672f44907dc4d5ff3584a49ae40c98
Author(s)
Mulhearn, Michael James
Advisor(s)
Christoph M.E. Paus.
Date Issued
2005
Publisher
Massachusetts Institute of Technology
Abstract
Magnetic monopoles are highly ionizing and curve in the direction of the magnetic field. A new dedicated magnetic monopole trigger at CDF, which requires large light pulses in the scintillators of the time-of-flight system, remains highly efficient to monopoles while consuming a tiny fraction of the available trigger bandwidth. A specialized offline reconstruction checks the central drift chamber for large dE/dx tracks which do not curve in the plane perpendicular to the magnetic field. We observed zero monopole candidate events in 35.7 pb⁻¹ of proton-antiproton collisions at ... = 1.96 TeV. This implies a monopole production cross section limit [sigma] < 0.2 pb for monopoles with mass between 100 and 700 GeV, and, for a Drell-Yan like pair production mechanism, a mass limit m > 360 GeV.
Description
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, June 2005.
Includes bibliographical references (p. 159-164).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
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