{"id":854,"date":"2013-04-18T15:29:37","date_gmt":"2013-04-18T06:29:37","guid":{"rendered":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/854\/"},"modified":"2013-04-18T15:29:37","modified_gmt":"2013-04-18T06:29:37","slug":"20130410_yamazaki","status":"publish","type":"seminar","link":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/854\/","title":{"rendered":"Flavor-singlet scalar in large N_f QCD"},"content":{"rendered":"
In the walking technicolor model, the composite flavor-singlet state <\/span>is regarded as the Higgs-like particle in the real world. <\/span>While the calculation of the scalar state in the lattice gauge <\/span>numerical simulation is one of the most challenging subjects, <\/span>it is important to investigate whether the mass of the scalar state <\/span>is relatively smaller than the<\/span> techni-pion decay constant or not, <\/font>because the experimentally observed mass is smaller than the <\/span>scalar VEV in the standard model, which is identified (up to O(1) <\/span>factor) with the techni-pion decay constant  in technicolor models. <\/span>We explain why the calculation <\/span>is so difficult in the lattice <\/span>gauge <\/span>numerical simulation, and how to overcome the problems in <\/span>our <\/span>calculation. Furthermore we present encouraging results of the mass <\/span>of <\/span>the flavor-singlet scalar in N_f = 12 QCD, where the theory is in the <\/span>conformal phase, and also in N_f = 8 QCD which might be a candidate <\/span>of the walking technicolor model.<\/span>
<\/div>\n

<\/span><\/div>\n","protected":false},"featured_media":0,"template":"","tags":[],"seminar_category":[58],"acf":{"s_now_accepting":true,"s_date_order":"2013-04-10 18:00:00","s_date_end":null,"s_date_text":"","s_text":"Takeshi Yamazaki","s_place":"KMI Science Symposia (ES635)","s_place_other":"","s_categoryother":"","s_poster":"","s_poster2":"","s_slide":"
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