{"version":"1.0","provider_name":"KMI - Nagoya University","provider_url":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng","title":"[Research] Belle II accumulates the world\u2019s largest \u03a5(4S) dataset for more precise searches for new physics beyond the Standard Model - KMI - Nagoya University","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"MbyyMf2HoA\"><a href=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/blog\/2026\/06\/05\/3540\/\">[Research] Belle II accumulates the world\u2019s largest \u03a5(4S) dataset for more precise searches for new physics beyond the Standard Model<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/blog\/2026\/06\/05\/3540\/embed\/#?secret=MbyyMf2HoA\" width=\"600\" height=\"338\" title=\"&#8220;[Research] Belle II accumulates the world\u2019s largest \u03a5(4S) dataset for more precise searches for new physics beyond the Standard Model&#8221; &#8212; KMI - Nagoya University\" data-secret=\"MbyyMf2HoA\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/* ]]> *\/\n<\/script>\n","description":"The Belle II experiment reached a major milestone on May 17, 2025, by accumulating the world\u2019s largest dataset of B mesons. This achievement surpasses the record set by its predecessor, the Belle experiment. By utilizing \u201cclean\u201d electron\u2013positron annihilation processes (in which few additional particles are produced), Belle II can probe signs of new physics beyond the Standard Model with unprecedented precision. Looking ahead, the research team will continue to increase the dataset and refine the experimental apparatus, aiming to open &hellip;","thumbnail_url":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/wp-content\/uploads\/sites\/2\/2026\/06\/20260605_belle2_detector-1024x683.jpg"}