{"id":149700,"date":"2015-11-17T18:00:00","date_gmt":"2015-11-17T15:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=9646965b091437c90f61ec796420406a"},"modified":"2015-11-17T18:00:00","modified_gmt":"2015-11-17T15:00:00","slug":"standard-model-prediction-for-direct-cp-violation-in-k%e2%86%92%cf%80%cf%80-decay","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=149700","title":{"rendered":"Standard Model Prediction for Direct CP Violation in K\u2192\u03c0\u03c0 Decay"},"content":{"rendered":"<p>Author(s): Z. Bai, T. Blum, P.\u2009A. Boyle, N.\u2009H. Christ, J. Frison, N. Garron, T. Izubuchi, C. Jung, C. Kelly, C. Lehner, R.\u2009D. Mawhinney, C.\u2009T. Sachrajda, A. Soni, and D. Zhang (RBC and UKQCD Collaborations)<\/p>\n<p>We report the first lattice QCD calculation of the complex kaon decay amplitude <span class=\"aps-inline-formula\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><msub><mi>A<\/mi><mn>0<\/mn><\/msub><\/math><\/span> with physical kinematics, using a <span class=\"aps-inline-formula\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mrow><msup><mrow><mn>32<\/mn><\/mrow><mrow><mn>3<\/mn><\/mrow><\/msup><mo>\u00d7<\/mo><mn>64<\/mn><\/mrow><\/math><\/span> lattice volume and a single lattice spacing <span class=\"aps-inline-formula\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mi>a<\/mi><\/math><\/span>, with <span class=\"aps-inline-formula\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mn>1<\/mn><mo stretchy=\"false\">\/<\/mo><mi>a<\/mi><mo>=<\/mo><mn>1.3784<\/mn><mo stretchy=\"false\">(<\/mo><mn>68<\/mn><mo stretchy=\"false\">)<\/mo><mtext>\u2009<\/mtext><mtext>\u2009<\/mtext><mi>GeV<\/mi><\/math><\/span>. We find <span class=\"aps-inline-formula\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mrow><mi>Re<\/mi><mo stretchy=\"false\">(<\/mo><msub><mrow><mi>A<\/mi><\/mrow><mrow><mn>0<\/mn><\/mrow><\/msub><mo stretchy=\"false\">)<\/mo><mo>=<\/mo><mn>4.66<\/mn><mo stretchy=\"false\">(<\/mo><mn>1.00<\/mn><mo stretchy=\"false\">)<\/mo><mo stretchy=\"false\">(<\/mo><mn>1.26<\/mn><mo stretchy=\"false\">)<\/mo><mo>\u00d7<\/mo><mn>1<\/mn><msup><mrow><mn>0<\/mn><\/mrow><mrow><mo>\u2212<\/mo><mn>7<\/mn><\/mrow><\/msup><mtext>\u2009<\/mtext><mtext>\u2009<\/mtext><mi>GeV<\/mi><\/mrow><\/math><\/span> and <span class=\"aps-inline-formula\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><mrow><mi>Im<\/mi><mo stretchy=\"false\">(<\/mo><msub><mrow><mi>A<\/mi><\/mrow><mrow><mn>0<\/mn><\/mrow><\/msub><mo stretchy=\"false\">)<\/mo><mo>=<\/mo><mo>\u2212<\/mo><mn>1.90<\/mn><mo stretchy=\"false\">(<\/mo><mn>1.23<\/mn><mo stretchy=\"false\">)<\/mo><mo stretchy=\"false\">(<\/mo><mn>1.08<\/mn><mo stretchy=\"false\">)<\/mo><mo>\u00d7<\/mo><mn>1<\/mn><msup><mrow><mn>0<\/mn><\/mrow><mrow><mo>\u2212<\/mo><mn>11<\/mn><\/mrow><\/msup><mtext>\u2009<\/mtext><mtext>\u2009<\/mtext><mi>GeV<\/mi><\/mrow><\/math><\/span>, where the first erro\u2026<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/d22izw7byeupn1.cloudfront.net\/journals\/PRL\/key_images\/10.1103\/PhysRevLett.115.212001.png\" width=\"200\" height=\"100\"><\/p>\n<p>[Phys. Rev. Lett. 115, 212001] Published Tue Nov 17, 2015<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Author(s): Z. Bai, T. Blum, P.\u2009A. Boyle, N.\u2009H. Christ, J. Frison, N. Garron, T. Izubuchi, C. Jung, C. Kelly, C. Lehner, R.\u2009D. Mawhinney, C.\u2009T. Sachrajda, A. Soni, and D. Zhang (RBC and UKQCD Collaborations)&lt;br\/&gt;We report the first lattice QCD calculation of the complex kaon decay amplitude A_{0} with physical kinematics, using a 32^{3}\u00d764 lattice volume and a single lattice spacing a, with 1\/a=1.3784(68)\u2009\u2009GeV. We find Re(A_{0})=4.66(1.00)(1.26)\u00d710^{\u22127}\u2009\u2009GeV and Im(A_{0})=\u22121.90(1.23)(1.08)\u00d710^{\u221211}\u2009\u2009GeV, wh\u2026&lt;br\/&gt;&lt;img src=&quot;\/\/d22izw7byeupn1.cloudfront.net\/journals\/PRL\/key_images\/10.1103\/PhysRevLett.115.212001.png&quot; width=&quot;200&quot; height=&quot;100&quot;&gt;&lt;br\/&gt;[Phys. Rev. Lett. 115, 212001] Published Tue Nov 17, 2015<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[182],"tags":[],"class_list":{"0":"post-149700","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-teadus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/149700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=149700"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/149700\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=149700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=149700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=149700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}