" If neutrinos have non-zero mass, they necessarily travel slower than the speed of light. Therefore, it would be possible to "overtake" a neutrino, choosing a reference frame in which its direction of motion is reversed without affecting its spin (making it right-handed) . Since then, physicists have revised the Standard Model to allow neutrinos to have mass, which make up additional free parameters beyond the initial 19. A further extension of the Standard Model can be found in the theory of supersymmetry, which proposes a massive supersymmetric "partner" for every particle in the conventional Standard Model. Supersymmetric particles have been suggested as a candidate for explaining dark matter. Although supersymmetric particles have not been observed experimentally to date, the theory is one of the most popular avenues of research in theoretical particle physics. References Textbooks Griffiths, David J. Model Ship Tall Wooden (1987) Introduction to Elementary Particles, Wiley, John & Sons, Inc. ISBN 0471603864 Journal Articles Y. "

" This includes mainly The Pentagon and other governmental bodies. Chomsky and Herman then argue that a "symbiotic relationship" arises between the media and parts of government which is sustained by economic necessity and reciprocity of interest. On the one hand, government and news-promoters strive to make it easier for news organizations to buy their services; according to the authors (p. 22), they provide them with facilities in which to gather give journalists advance copies of speeches and forthcoming reports schedule press conferences at hours well-geared to news deadlines write press releases in usable language carefully organize their press conferences and "photo opportunity" sessions On the other hand, the media becomes reluctant to run articles that will harm corporate interests that provide them with the resources that the media depends upon. The complexity of this supposed relationship also gives rise to a "moral division of labor", in which "officials have and give the facts," and "reporters merely get them". Journalists are then supposed to adopt an uncritical attitude that makes it possible for them to accept corporate values without experiencing cognitive dissonance. During the year 2005 in the USA, the Government Accountability Office (GAO) criticised the George W. Model Sail Boat Bush administration for the preparation and distribution of videos which falsely give the impression of being interviews made independently of the administration. The New York Times claimed that more than 20 federal agencies, including the State Department and the Defense Department, now create fake news clips. "