{"id":37,"date":"2017-02-03T12:29:30","date_gmt":"2017-02-03T12:29:30","guid":{"rendered":"http:\/\/belle2.ijs.si\/public\/?page_id=37"},"modified":"2019-10-25T16:58:09","modified_gmt":"2019-10-25T16:58:09","slug":"exercise-3","status":"publish","type":"page","link":"https:\/\/belle2.ijs.si\/public\/exercise-3\/","title":{"rendered":"Exercise 3"},"content":{"rendered":"

From the measured momentum and energy of two particles \"(p_1, E_1)\" and \"(p_2, E_2)\" the mass of the mother particle can be calculated as<\/p>\n

  <\/span>   <\/span>\"\[mc^2=\sqrt{(E_1+E_2)^2-(p_1+p_2)^2 c^2 )}\]\"<\/p>\n

By using a ‘particle combiner’ block, the mass of the particle can be calculated for each combination of particles.<\/p>\n

Plot the mass distribution of neutral pion \"\pi^0\" which decay to two \u03b3 photons:<\/p>\n

  <\/span>   <\/span>\"\[\pi^0 \longrightarrow \gamma\gamma\]\"<\/p>\n

You will find a peak at 0.135 \"\mathrm{GeV}/c^2\", which is exactly the mass of the pion.<\/p>\n

http:\/\/belle2.ijs.si\/masterclass<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

From the measured momentum and energy of two particles and the mass of the mother particle can be calculated as     By using a ‘particle combiner’ block, the mass of the particle can be calculated for each combination of particles. Plot the mass distribution of neutral pion which decay to two \u03b3 photons:   […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-37","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages\/37","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/comments?post=37"}],"version-history":[{"count":5,"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages\/37\/revisions"}],"predecessor-version":[{"id":193,"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages\/37\/revisions\/193"}],"wp:attachment":[{"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/media?parent=37"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}