Authors:

Isabella Freitas

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About Paper:

This project investigates the prospects of quantum entanglement in top quark pair production at the high- luminosity large hadron collider (HL-LHC). Utilizing generated Monte Carlo (MC) samples, we analyze the MC data to derive kinematic variables relevant to top-antitop quark production. Event selection criteria specific to top-antitop quark production and subsequent decay in the dilepton channel are applied, followed by a kinematic top quark reconstruction, which involves identifying the decay products of the top quarks and reconstructing their momenta and other properties. The focus is on measuring the normalized differential cross-section with respect to the opening angle (cosphi) between outgoing leptons in the transverse plane of the top quark center of mass frame. This angle is sensitive to the extend of spin correlations of the produced top quark antitop quark pair originating from the colliding particles. This quantity allows for probing entanglement in the phase space defined by the top quark-antiquark invariant mass (M_ttbar) and the scattering angle (theta). The entanglement is present for -1 < D < -1/3. On a broader scale, this method of data analysis can be used to probe the capabilities of the HL-LHC collider in future experiments and advance our understanding of quantum entanglement in particle physics, while contributing to the wider field of quantum mechanics through the potential application of Bell's inequality tests. Keywords: Quantum Entanglement; Spin Correlation Coefficients; Top Quark; High Luminosity Large Hadron Collider (HL-LHC); Spin Polarization

Source:

Purdue University / 2024

Topics:

No topics listed

Co-authors:

Isabella Freitas