http:\/\/belle2.ijs.si\/masterclass<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Plot the mass distribution of neutral kaon which decays to two charged pions: You will find a peak at 0.498 , which is exactly the mass of the neutral kaon http:\/\/belle2.ijs.si\/masterclass<\/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-60","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages\/60","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=60"}],"version-history":[{"count":6,"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages\/60\/revisions"}],"predecessor-version":[{"id":194,"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages\/60\/revisions\/194"}],"wp:attachment":[{"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/media?parent=60"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"K_s\"](\"https:\/\/belle2.ijs.si\/public\/wp-content\/ql-cache\/quicklatex.com-a20686d38853e3f5eb325de426c8c0fc_l3.png\" "\\"Rendered")
which decays to two charged pions:<\/p>\n![\"\[K_s \longrightarrow \pi^+ \pi^-\]\"](\"https:\/\/belle2.ijs.si\/public\/wp-content\/ql-cache\/quicklatex.com-51a4bcf4eb2d8e946ea0f2aa557a57a3_l3.png\" "\\"Rendered")
<\/p>\n![\"\maghrm{GeV}/c^2\"](\"https:\/\/belle2.ijs.si\/public\/wp-content\/ql-cache\/quicklatex.com-e040df1a4e75de79507fa7de4010a938_l3.png\" "\\"Rendered")
, which is exactly the mass of the neutral kaon