{"id":15975,"date":"2017-11-20T16:57:44","date_gmt":"2017-11-20T16:57:44","guid":{"rendered":"http:\/\/sitepourvtc.com\/?page_id=15975"},"modified":"2022-11-03T09:05:27","modified_gmt":"2022-11-03T09:05:27","slug":"law-conservation-baryon-number","status":"publish","type":"page","link":"https:\/\/sitepourvtc.com\/laws-of-conservation\/law-conservation-baryon-number\/","title":{"rendered":"Law of Conservation of Baryon Number"},"content":{"rendered":"
The sum of the baryon number of all incoming particles is the same as the sum of the baryon numbers of all particles resulting from the reaction.<\/em><\/p>\n<\/div><\/div>\n In analyzing nuclear reactions, we apply the many conservation laws<\/strong>. Nuclear reactions<\/strong><\/a> are subject to classical conservation laws for momentum<\/a>, angular momentum<\/a>, and energy<\/a>\u00a0<\/strong>(including rest energies). \u00a0Additional conservation laws not anticipated by classical physics are electric charge<\/strong><\/a>, lepton number<\/a>, and baryon number<\/strong>. Certain of these laws are obeyed under all circumstances, and others are not.<\/p>\n Baryon number<\/strong> is a generalization of nucleon number<\/strong>, which is conserved in non-relativistic nuclear reactions and decays. The law of conservation of baryon number<\/strong> states that:<\/p>\n The sum of the baryon number of all incoming particles is the same as the sum of the baryon numbers of all particles resulting from the reaction.<\/em><\/p>\n For example, the following reaction has never been observed:<\/p>\n <\/a><\/p>\n even if the incoming proton has sufficient energy and charge, energy, and so on, are conserved. This reaction does not conserve the baryon number since the left side has B =+2, and the right has B =+1.<\/p>\n On the other hand, the following reaction (proton-antiproton pair production) does conserve B and does occur if the incoming proton has sufficient energy (the threshold energy = 5.6 GeV):<\/p>\n