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of 4 641
pro vyhledávání: '"Top quark decays"'
We study axion-like particles (ALPs) with quark-flavor-violating couplings at the LHC. Specifically, we focus on the theoretical scenario with ALP-top-up and ALP-top-charm interactions, in addition to the more common quark-flavor-diagonal couplings.
Externí odkaz:
http://arxiv.org/abs/2404.06126
Autor:
Aguilar-Saavedra, J. A.
Quantum tomography in high-energy physics processes has usually been restricted to the spin degrees of freedom. We address the case of top quark decays $t \to W b$, in which the orbital angular momentum ($L$) and the spins of $W$ and $b$ are intertwi
Externí odkaz:
http://arxiv.org/abs/2402.14725
We present a method that allows enabling Matrix Element Corrections (MECs) in Pythia8 with MC@NLO matching, without incurring double counting. MECs are an interesting feature that may contribute to the accuracy of theoretical predictions, alongside m
Externí odkaz:
http://arxiv.org/abs/2402.12893
The standard approaches for describing top quark production and its decay dynamics are currently mostly either based on the narrow-width (NW) limit or on off-shell fixed-order calculations. In this article we present a factorised approach for boosted
Externí odkaz:
http://arxiv.org/abs/2401.05035
Autor:
Zhao-feng Ge, Jin-lei Yang
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 11, Pp 1-10 (2024)
Abstract The branching ratios of the flavor changing top quark decays in the SM are too small to be detected experimentally. Therefore, any observable signal for these processes at the LHC would serve as compelling evidence for new physics. In the fl
Externí odkaz:
https://doaj.org/article/9b689864e22d43bdaa555a75e375b357
Akademický článek
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Publikováno v:
Phys.Lett.B 850 (2024)138548
We examine flavour-changing neutral-current decays of the top quark, $t\to q \gamma$, $t \to qZ$, $t \to q H$, and $ t\to q g$ (with $q=u, c$), in the Alternative Left-Right Model, a left right-symmetric model featuring exotic quarks and light bosons
Externí odkaz:
http://arxiv.org/abs/2312.12523
Akademický článek
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Autor:
ATLAS Collaboration
Publikováno v:
JHEP07(2023)199
A search for flavour-changing neutral-current decays of a top quark into an up-type quark (either up or charm) and a light scalar particle $X$ decaying into a bottom anti-bottom quark pair is presented. The search focuses on top-quark pair production
Externí odkaz:
http://arxiv.org/abs/2301.03902