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DTSTART;TZID=Europe/Ljubljana:20220414T110000
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DTSTAMP:20260427T141108
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SUMMARY:Nejc Košnik: LFU and CP violation with S3
DESCRIPTION:We introduce the CP violating scalar leptoquark S3 to explain the measured values of the lepton universality ratios RK(∗). We derive constraints on the CP-even and CP-odd components of the leptoquark Yukawa couplings stemming from effects in b → sμμ and Bs mixing. For the b → sμμ processes we impose RK(∗)\, B(Bs → μ+μ−)\, as well as CP-sensitive angular asymmetries A7\,8\,9\, whereas in the Bs mixing sector ∆Ms and Sψφ are considered. Combining the constraints within the S3 model reveals that a large CP phase with a definite sign is perfectly viable for a leptoquark of mass below a few TeV. For larger mass of the S3 leptoquark the CP phase is suppressed due to the observables pertaining to the Bs system. We provide predictions of direct and mixing-induced CP asymmetries in B → Kμμ that could reveal the presence of the novel CP phase.\nhttps://indico.ijs.si/event/1420/
URL:https://web-f1.ijs.si/event/nejc-kosnik-lfu-and-cp-violation-with-s3/
LOCATION:https://zoom.us/j/3601731049?pwd=bVNQRjUxU2ExZ0cveWcxYXNUUGdjZz09 (Zoom)
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