- Chad J. Johnson
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Chad J. Johnson 
Born Chad Jeremy Johnson
January 13, 1978Residence New York, United States Education B.S. from University of Minnesota, PHD from Columbia University Occupation Physicist Known for Contributions to Particle Physics and Photography Website http://chadjohnsonphotography.com/ Chad Jeremy Johnson (born January 13, 1978) is an American particle physicist and noted photographer. He is best known for his work in the search for a neutral long-lived particle produced in decays of Higgs Boson. His work was primarily at the Fermilab Tevatron Collider in Batavia Illinois, from 2002 to 2008.
Contents
Education
Chad has a PHD in high energy particle physics from Columbia University. His undergraduate physics training was at the University of Minnesota, Twin City Campus. His work has been published in the American Physical Society Journal. [1]
Career
Physics
Johnson’s work was concentrated on the theoretical particle created in the decays of Higgs boson; specifically in collisions that decay to b-jets and the particle that lives long enough to travel at least 1.6 cm before decaying into heavy quarks.[1] The Higgs Boson is the only Standard Model of particle physics predicted to exist that has not been observed.[2]
Johnson’s novel search for the unnamed particle is theorized to arise in the “hidden valley” sector of particle physics.[3] Johnson’s work involved mapping center-of-mass energy of 1.96TeV. Johnson worked with the DØ experiment, located at one of the interaction regions, where proton and antiproton beams intersect, on the Tevatron synchrotron ring, labeled 'DØ'.[1]
His recent work is in medical physics, in the radiation oncology department centered at Columbia Presbyterian Hospital. He is developing new technologies to improve the effectiveness of lasers to target and eradicate cancerous tissue.
Photography
Chad Johnson is also a New York based professional photographer, specializing in urban nightlife and celebrity portraits. His list of photography subjects include Lady Gaga and Maria Tash.[4]
References
- ^ a b "Search for a Neutral Long-Lived Particle Decaying to b-Jets". Columbia University. http://www-d0.fnal.gov/results/publications_talks/thesis/johnson/thesis.pdf. Retrieved 2010-01-12.
- ^ W.-M. Yao et al. (2006). Searches for Higgs Bosons "Review of Particle Physics". Journal of Physics G 33: 1. arXiv:astro-ph/0601168. Bibcode 2006JPhG...33....1Y. doi:10.1088/0954-3899/33/1/001. http://pdg.lbl.gov/2006/reviews/higgs_s055.pdf Searches for Higgs Bosons.
- ^ "Search for Next-to-Minimal Supersymmetric Higgs Bosons in the h→aa→μμμμ, μμττ Channels Using pp̅ Collisions at √s=1.96 TeV". Physical Review Letters 103 (6): 061801. Bibcode 2009PhRvL.103f1801A. doi:10.1103/PhysRevLett.103.061801.
- ^ "Chad Johnson Photography". http://gallery.chadjohnsonphotography.com/. Retrieved 2010-01-12.
Categories:- 1978 births
- Living people
- University of Minnesota alumni
- Columbia University alumni
- Particle physicists
- American photographers
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