Zobrazeno 1 - 10
of 4 723
pro vyhledávání: '"Aguilar Saavedra, J A"'
Autor:
Aguilar-Saavedra, J. A.
The decay $H \to ZZ \to 4\ell$, with $\ell = e,\mu$, can be used to test quantum interference in analogy to the famous double-slit experiment. The observations corresponding to `covering a slit' can be extracted from data in the $ee\mu\mu$ channel, w
Externí odkaz:
http://arxiv.org/abs/2411.13464
Autor:
Aguilar-Saavedra, J. A.
We address the discovery and characterisation of toponium production at the Large Hadron Collider. In the dilepton decay mode, multivariate analyses of spin and colour observables could provide evidence that an excess of events present near the $t \b
Externí odkaz:
http://arxiv.org/abs/2407.20330
Autor:
Aguilar-Saavedra, J. A.
The decays of the Higgs boson produce a state in which the spins of the decay products and the orbital angular momentum ($L$) are highly entangled. We obtain the tripartite density operator, as well as reduced operators, for the decay into two weak b
Externí odkaz:
http://arxiv.org/abs/2403.13942
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
Autor:
Aguilar-Saavedra, J. A.
Top pair production is ideally suited to observe post-decay entanglement, thus providing a novel test of quantum mechanics. We provide top polarised decay amplitudes that can be used to compute semi-analytical predictions and, in particular, to bette
Externí odkaz:
http://arxiv.org/abs/2401.10988
Autor:
Aguilar-Saavedra, J. A., Casas, J. A.
Particle decays do not constitute a spin ``measurement'' in the quantum-mechanical sense, but still modify the spin state, in particular for an entangled system. We show that for a spin-entangled pair of particles the entanglement of the system can i
Externí odkaz:
http://arxiv.org/abs/2401.06854
Autor:
Aguilar-Saavedra, J. A.
We consider a pair of unstable fermions in a spin-entangled state. After the decay of one fermion, a spin measurement is performed on the surviving partner, with a Stern-Gerlach experiment or similar. The measurement not only projects the spin of the
Externí odkaz:
http://arxiv.org/abs/2308.07412
Autor:
Aguilar-Saavedra, J. A.
Top pairs produced at the Large Hadron Collider exhibit quantum entanglement of their spins near threshold and for boosted, central $t \bar t$ pairs. The entanglement is maintained between the decay products, in particular between the top quark and t
Externí odkaz:
http://arxiv.org/abs/2307.06991
We consider the small excesses around 95 GeV found in several searches for a new scalar in $\gamma \gamma$, $\tau \tau$ and $b \bar b$ final states. Instead of trying to accommodate them all, as is usually done in the literature, in the context of a
Externí odkaz:
http://arxiv.org/abs/2307.03768
The MUST (Mass Unspecific Supervised Tagging) method has proven to be successful in implementing generic jet taggers capable of discriminating various signals over a wide range of jet masses. We implement the MUST concept by using eXtreme Gradient Bo
Externí odkaz:
http://arxiv.org/abs/2305.04957