TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.16.5.131
TI  - Accessing CKM suppressed top decays at the LHC
PY  - 2024/05/24
UR  - https://scipost.org/SciPostPhys.16.5.131
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 16
IS  - 5
SP  - 131
A1  - Faroughy, Darius A.
AU  - F. Kamenik, Jernej
AU  - Szewc, Manuel
AU  - Zupan, Jure
AB  - We propose an extension of the existing experimental strategy for measuring branching fractions of top quark decays, targeting specifically $t\to j_q W$, 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 $|V_{td}|^2+|V_{ts}|^2$.
ER  -

@Article{10.21468/SciPostPhys.16.5.131,
	title={{Accessing CKM suppressed top decays at the LHC}},
	author={Darius A. Faroughy and Jernej F. Kamenik and Manuel Szewc and Jure Zupan},
	journal={SciPost Phys.},
	volume={16},
	pages={131},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.16.5.131},
	url={https://scipost.org/10.21468/SciPostPhys.16.5.131},
}