{"id":302,"date":"2021-11-14T16:31:44","date_gmt":"2021-11-14T16:31:44","guid":{"rendered":"https:\/\/belle2.ijs.si\/public\/?page_id=302"},"modified":"2023-10-29T13:11:22","modified_gmt":"2023-10-29T13:11:22","slug":"muon-antimuon-events","status":"publish","type":"page","link":"https:\/\/belle2.ijs.si\/public\/home\/quark-colors\/examples\/muon-antimuon-events\/","title":{"rendered":"Muon\/Antimuon Events"},"content":{"rendered":"\n<p>Muon\/antimuon events are probably the easiest to identify due to a very characteristic track those particles leave in the detector.<\/p>\n\n\n\n<p>Just like <a href=\"https:\/\/belle2.ijs.si\/public\/home\/quark-colors\/examples\/electron-positron-events\/\">electron\/positron events<\/a> these events leave in almost all cases <strong>two clearly visible<br>tracks<\/strong> in the detector. Since (anti-)muons are (almost) the only charged particles, that can break through the electromagnetic calorimeter, they show <strong>very characteristic, green detector hits in the kaon-muon-calorimeter<\/strong> along their outer tracks.<\/p>\n\n\n\n<p>As you can see on the example pictures down below one can see these green hits very well for both tracks and therefore sort these events very well.<\/p>\n\n\n\n<p>Since only the muon and antimuon are produces and these don\u2019t decay any further within the detector, these events usually have <strong>very little missing energy and high straightness<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Myon\/Antimyon Ereignis 1\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/iwsLvDcjXTY?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Myon\/Antimyon Ereignis 2\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/cQ0vgADClDQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Myon\/Antimyon Ereignis 3\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/Ow2ZoE9wSC8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><strong><a href=\"https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-1.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Example event displays (PDF):<\/a><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1008\" height=\"756\" src=\"https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-1.png\" alt=\"\" class=\"wp-image-398\" srcset=\"https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-1.png 1008w, https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-1-300x225.png 300w, https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-1-768x576.png 768w\" sizes=\"auto, (max-width: 1008px) 100vw, 1008px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1008\" height=\"756\" src=\"https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-2.png\" alt=\"\" class=\"wp-image-399\" srcset=\"https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-2.png 1008w, https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-2-300x225.png 300w, https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-2-768x576.png 768w\" sizes=\"auto, (max-width: 1008px) 100vw, 1008px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1008\" height=\"756\" src=\"https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-3.png\" alt=\"\" class=\"wp-image-400\" srcset=\"https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-3.png 1008w, https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-3-300x225.png 300w, https:\/\/belle2.ijs.si\/public\/wp-content\/uploads\/2022\/01\/examples_mm_eng-3-768x576.png 768w\" sizes=\"auto, (max-width: 1008px) 100vw, 1008px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Muon\/antimuon events are probably the easiest to identify due to a very characteristic track those particles leave in the detector. Just like electron\/positron events these events leave in almost all cases two clearly visibletracks in the detector. Since (anti-)muons are (almost) the only charged particles, that can break through the electromagnetic calorimeter, they show very [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"parent":297,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-302","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages\/302","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\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/comments?post=302"}],"version-history":[{"count":7,"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages\/302\/revisions"}],"predecessor-version":[{"id":489,"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages\/302\/revisions\/489"}],"up":[{"embeddable":true,"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/pages\/297"}],"wp:attachment":[{"href":"https:\/\/belle2.ijs.si\/public\/wp-json\/wp\/v2\/media?parent=302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}