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  • Accessing CKM suppressed top decays at the LHC [Elektronski vir]
    Faroughy, Darius Alexander ...
    We propose an extension of the existing experimental strategy for measuring branching fractions of top quark decays, targeting specifically ▫$t \to j_qW$▫, where ▫$j_q$▫ is a light quark jet. The ... improved strategy uses orthogonal ▫$b$▫- and ▫$q$▫-taggers, and adds a new observable, the number of light-quark-tagged jets, to the already commonly used observable, the fraction of ▫$b$▫-tagged jets in an event. Careful inclusion of the additional complementary observable significantly increases the expected statistical power of the analysis, with the possibility of excluding ▫$|V_{tb}|=1$▫ at 95▫$\%$▫ C.L. at the HL-LHC, and accessing directly the standard model value of ▫$|V_{td}|^2 + |V_{ts}|^2$▫.
    Source: SciPost physics [Elektronski vir]. - ISSN 2542-4653 (Vol. 16, Iss. 5, 2024, 23 str.)
    Type of material - e-article ; adult, serious
    Publish date - 2024
    Language - english
    COBISS.SI-ID - 198143235
    DOI

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