{"id":2225,"date":"2025-05-21T01:38:38","date_gmt":"2025-05-20T17:38:38","guid":{"rendered":"http:\/\/web.tdli.sjtu.edu.cn\/kimsiang84\/?page_id=2225"},"modified":"2025-05-21T01:38:39","modified_gmt":"2025-05-20T17:38:39","slug":"fundamental-muon-physics","status":"publish","type":"page","link":"https:\/\/web.tdli.sjtu.edu.cn\/kimsiang84\/fundamental-muon-physics\/","title":{"rendered":"Fundamental Muon Physics"},"content":{"rendered":"\n

Anomalous Magnetic Moment (AMM) of The Muon (Muon g-2)<\/strong><\/h2>\n\n\n\n

Magnetic Moment<\/h3>\n\n\n\n
  • A measure of the strength of a magnetic source<\/li>
  • The g-factor is a dimensionless quantity that characterizes the magnetic moment and angular momentum of a particle<\/li><\/ul>\n\n\n\n
    • \"\"<\/figure><\/li>
    • \"\"<\/figure><\/li><\/ul><\/figure>\n\n\n\n
      • The muon’s spin precesses in the presence of a magnetic field<\/li>
      • The precession frequency is related to its magnetic moment<\/li><\/ul>\n\n\n\n

        Anomalous Magnetic Moment<\/h3>\n\n\n\n
        \"\"<\/figure><\/div>\n\n\n\n
        • Deviation from Dirac’s prediction for a free lepton (g=2)<\/li>
        • A contribution of effects of virtual particles, expressed by Feynman diagrams with loops, to the anomalous magnetic moment of muon<\/li><\/ul>\n\n\n\n
          • \"\"<\/figure><\/li><\/ul><\/figure>\n\n\n\n
            • Precision tests of Standard Model calculations and searches for physics beyond the Standard Model<\/li><\/ul>\n\n\n\n
              \"\"<\/figure><\/div>\n\n\n\n

              Related experiments: Fermilab muon g-2 experiment E989, J-PARC muon g-2 experiment, Brookhaven experiment E821<\/p>\n\n\n\n

              \"\"<\/figure><\/div>\n\n\n\n

              Electric Dipole Moment (EDM) of The Muon<\/strong> (Muon EDM)<\/h2>\n\n\n\n

              Electric Dipole Moment<\/h3>\n\n\n\n
              • \"\"<\/figure><\/li>
              • \"\"<\/figure><\/li><\/ul><\/figure>\n\n\n\n
                • A measure of the charge distribution within a muon. <\/li>
                • The spin precesses around the direction of the electric field in the presence of a non-zero EDM.<\/li>
                • This precession frequency is related to its electric dipole moment.<\/li><\/ul>\n\n\n\n
                  \"\"<\/figure><\/div>\n\n\n\n
                  • A sensitive probe for studying additional sources of charge-parity symmetry breaking.<\/li>
                  • It could shed light on the matter-antimatter asymmetry observed in our universe.<\/li><\/ul>\n\n\n\n

                    Charged Lepton Flavor Violating (cLFV)<\/strong> Processes<\/strong><\/h2>\n\n\n\n
                    • Evidence of LFV: neutrinos oscillate<\/li>
                    • Charged lepton flavor violating processes are highly suppressed in the Standard Model<\/li>
                    • A transition between the e, \u03bc, \u03c4 sectors that does not conserve lepton family number<\/li>
                    • Total lepton number: L = Le<\/sub> + L\u03bc<\/sub>+ L\u03c4<\/sub><\/li>
                    • To open a unique window on many New Physics (NP) scenarios<\/li>
                    • Related experiments: MEGA experiment, MEG experiment, SINDRUM experiment, SINDRUM II, MEG-II and Mu3e experiments at PSI, Mu2e experiment, COMET\/PRISM experiment, DeeMe experiment<\/li><\/ul>\n\n\n\n

                      Muonic channel: CLFV reactions<\/strong><\/h3>\n\n\n\n
                      \"\"<\/figure>\n\n\n\n
                      • \"\"<\/figure><\/li>
                      • \"\"<\/figure><\/li><\/ul><\/figure>\n\n\n\n

                        References<\/h3>\n\n\n\n
                        1. A. Keshavarzi, K. S. Khaw, T. Yoshioka, Nuclear Physics B<\/em>, 975<\/strong> (2022)<\/li>
                        2. K. S. Khaw, A. Adelmann et. al, Search for the muon electric dipole moment using frozen-spin technique at PSI, In Proceedings of the 22nd International Workshop on Neutrinos from Accelerators <\/em>(2022)<\/li>
                        3. R. H. Bernstein, P. S. Cooper, Charged lepton flavor violation: an experimenter’s guide, Physics Reports<\/em>, 532<\/strong>, 2 (2013)<\/li>
                        4. W. J. Marciano, T. Mori, J. M. Roney, Charged lepton flavor violation experiments, Annual Review of Nuclear and Particle Science<\/em>, 58<\/strong>, 1 (2008)<\/li><\/ol>\n\n\n\n

                          <\/p>\n","protected":false},"excerpt":{"rendered":"

                          Anomalous Magnetic Moment (AMM) of The Muon (Muon g-2) Magnetic Moment A measure of the strength of a magnetic source […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-2225","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/web.tdli.sjtu.edu.cn\/kimsiang84\/wp-json\/wp\/v2\/pages\/2225","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/web.tdli.sjtu.edu.cn\/kimsiang84\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/web.tdli.sjtu.edu.cn\/kimsiang84\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/web.tdli.sjtu.edu.cn\/kimsiang84\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/web.tdli.sjtu.edu.cn\/kimsiang84\/wp-json\/wp\/v2\/comments?post=2225"}],"version-history":[{"count":20,"href":"https:\/\/web.tdli.sjtu.edu.cn\/kimsiang84\/wp-json\/wp\/v2\/pages\/2225\/revisions"}],"predecessor-version":[{"id":2262,"href":"https:\/\/web.tdli.sjtu.edu.cn\/kimsiang84\/wp-json\/wp\/v2\/pages\/2225\/revisions\/2262"}],"wp:attachment":[{"href":"https:\/\/web.tdli.sjtu.edu.cn\/kimsiang84\/wp-json\/wp\/v2\/media?parent=2225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}