K 2020 YITP (virtual), Sept 2, 2020 - PowerPoint PPT Presentation

K 中間子による新物理探査 素粒子物理学の進展 2020 YITP (virtual), Sept 2, 2020 Kohsaku Tobioka ( 飛岡幸作 ) Florida State University Teppei Kitahara, Takemichi Okui, Gilad Perez, Yotam Soreq 
 Collaboration with [Phys.Rev.Lett. 124 (2020) 07180, 1909.11111 +updates ] 
 Stefania Gori, Gilad Perez [2005.05170] 
 Gordan Krnjaic, Gustavo Marques-Tavares, Diego Redigolo 
 [Phys.Rev.Lett. 124 (2020) 041802, 1902.07715]

Outline • Introduction ‣ Why Kaon? Excellent probe for New Physics, FIMP ‣ Rare kaon decay K →π vv at KOTO, and NA62 • Recent results from KAON2019 to ICHEP2020 ‣ NA62 results, KOTO “excess” ‣ New Physics Scenarios • Future prospects ‣ Higgs Portal, Muonic Force, Axion-like-particle Kohsaku Tobioka (FSU) 2

<latexit sha1_base64="d6V12ZDQp0MNTt0MOm/FHcv0U4=">AC3icbZBNS8MwGMfT+TbnW9Wjl7AhbAdHK4N5HoRvExwL7DVkabpFpamJUmFUXb34lfx4kERr34Bb34b064H3fxD4Jf/8zwkz9+NGJXKsr6Nwtr6xuZWcbu0s7u3f2AeHnVlGAtMOjhkoei7SBJGOekoqhjpR4KgwGWk506v0nrvgQhJQ36nZhFxAjTm1KcYKW2NzPLNvVUdukgkcu7VzlKCqaWvmevNayOzYtWtTHAV7BwqIFd7ZH4NvRDHAeEKMyTlwLYi5SRIKIoZmZeGsSQRwlM0JgONHAVEOkm2yxyeaseDfij04Qpm7u+JBAVSzgJXdwZITeRyLTX/qw1i5V84CeVRrAjHi4f8mEVwjQY6FBsGIzDQgLqv8K8QJhJWOr6RDsJdXoXued1u1Ju3jUrMo+jCE5AGVSBDZqgBa5BG3QABo/gGbyCN+PJeDHejY9Fa8HIZ47BHxmfP0F9mfM=</latexit> 日経サイエンス History : Kaons as discovery probes of new physics sd ) − ¯ K 0 ( s ¯ K 0 (¯ oscillation d ) • Charm quark Puzzle: K L → μ + μ - rate too small Glashow-Iliopoulos-Maiani (GIM) mechanism 2x2 matrix → charm as new d.o.f. • CP violation K L (~CP odd) K L →π 0 π 0 π 0 K S (~CP even) K s →π 0 π 0 from CERN Courier Also observed K L →π 0 π 0 !! CKM matrix [3x3 matrix with new phase] Kohsaku Tobioka (FSU) 3

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