In particle physics, Supersymmetry (SUSY) is a proposed type of spacetime symmetry that relates two basic classes of elementary particles: bosons, which have an integer-valued spin, and fermions, which have a half-integer spin. Each particle from one group is associated with a particle from the other, known as its superpartner, the spin of which differs by a half-integer. In a theory with perfectly "unbroken" supersymmetry, each pair of superpartners would share the same mass and internal quantum numbers besides spin. For example, there would be a "selectron" (superpartner electron), a bosonic version of the electron with the same mass as the electron, that would be easy to find in a laboratory. Thus, since no superpartners have been observed, if supersymmetry exists it must be a spontaneously broken symmetry so that superpartners may differ in mass. Spontaneously-broken supersymmetry could solve many mysterious problems in particle physics including the hierarchy problem. The simplest realization of spontaneously-broken supersymmetry, the so-called Minimal Supersymmetric Standard Model, is one of the best studied candidates for physics beyond the Standard Model.
Mark Anderson may refer to:
Rear Admiral Mark Anderson CB is a former Royal Navy officer who served as Commander Operations and Rear Admiral, Submarines.
Naval career
Educated at the University of Manchester, Anderson joined the Royal Navy in 1974 and was appointed commanding officer of the submarine HMS Talent in 1993. He became Military Assistant to the Chief of Defence Logistics in May 2000, Commanding Officer of the frigate HMS Marlborough as well as Captain of the 4th Frigate Squadron in August 2002 and Director Equipment Capability (Underwater Effects) in March 2003 before moving on to become the Chief of the Defence Staff's Liaison Officer to the U.S. Joint Chiefs of Staff Committee in July 2007 and Commander Operations and Rear Admiral, Submarines in January 2009. He retired from the Royal Navy in March 2011.
In retirement he became Strategy Director of Sonar & Undersea Systems and then Group Marketing Director at Ultra Electronics.
References
Mark Anderson (born 16 November 1991) is a male Belizean sprinter. He competed in the Men's 100 metres event at the 2015 World Championships in Athletics in Beijing, China.