Bell nonlocality and entanglement in $χ_{cJ}$ decays into baryon pair

• URL: http://arxiv.org/abs/2512.22837v1
• Date: Sun, 28 Dec 2025 08:40:25 GMT
• Title: Bell nonlocality and entanglement in $χ_{cJ}$ decays into baryon pair
• Authors: PengCheng Hong, RongGang Ping, WeiMin Song,
• Abstract summary: We present a systematic analysis of Bell nonlocality and entanglement in $_cJ$ decays into baryon pair.<n>From the baryon-antibaryon spin density matrix, we construct measurable Bell observables and concurrence.<n>The results indicate that the $_cJ$ system is a novel platform for testing quantum entanglement in high-energy collisions.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present a systematic analysis of Bell nonlocality and entanglement in $χ_{cJ}$ decays into baryon pair ($B\bar{B}$) ($J=0,1,2$). From the baryon-antibaryon spin density matrix, we construct measurable Bell observables and concurrence, revealing a striking hierarchy of quantum correlations: $χ_{c0}$ decays exhibit maximal violation and entanglement; $χ_{c1}$ decays violate Bell inequalities for $θ_1 \in (0, π)$ with angle-modulated strength; we find that $B\bar B$ in $χ_{c2}$ decays is in separable state, and no indication is found for the Bell inequality violation. We provide complete analytical results for $J=0,1$ and quantitative, uncertainty-aware estimations for $J=2$ using experimental inputs. The results indicates that the $χ_{cJ}$ system as a novel platform for testing quantum entanglement in high-energy collisions.

Related papers

• Mesoscopic Fluctuations and Multifractality at and across Measurement-Induced Phase Transition [46.176861415532095]
  We explore statistical fluctuations over the ensemble of quantum trajectories in a model of two-dimensional free fermions.<n>Our results exhibit a remarkable analogy to Anderson localization, with $G_AB$ corresponding to two-terminal conductance.<n>Our findings lay the groundwork for mesoscopic theory of monitored systems, paving the way for various extensions.
  arXiv  Detail & Related papers  (2025-07-15T13:44:14Z)
• Practical Criteria for Entanglement and Nonlocality in Systems with Additive Observables [44.99833362998488]
  For general bipartite mixed states, a sufficient and necessary mathematical condition for certifying entanglement and/or (Bell) non-locality remains unknown.<n>We derive very simple, handy criteria for detecting entanglement or non-locality in many cases.<n>We illustrate these results by analyzing the potential detection of entanglement and nonlocality in Higgs to ZZ decays at the LHC.
  arXiv  Detail & Related papers  (2025-03-21T16:48:04Z)
• A Unified Framework for Uniform Signal Recovery in Nonlinear Generative Compressed Sensing [68.80803866919123]
  Under nonlinear measurements, most prior results are non-uniform, i.e., they hold with high probability for a fixed $mathbfx*$ rather than for all $mathbfx*$ simultaneously. Our framework accommodates GCS with 1-bit/uniformly quantized observations and single index models as canonical examples. We also develop a concentration inequality that produces tighter bounds for product processes whose index sets have low metric entropy.
  arXiv  Detail & Related papers  (2023-09-25T17:54:19Z)
• Entanglement and Bell inequalities violation in $H\to ZZ$ with anomalous coupling [44.99833362998488]
  We discuss entanglement and violation of Bell-type inequalities for a system of two $Z$ bosons produced in Higgs decays. We find that a $ZZ$ state is entangled and violates the inequality for all values of the pair (anomalous) coupling constant.
  arXiv  Detail & Related papers  (2023-07-25T13:44:31Z)
• Bell inequality is violated in $B^0\to J/\psi \, K^{\star}(892)^0$ decays [0.0]
  Entanglement is also present and the Bell inequality is violated in other decays of the $B$ mesons into vector mesons. We establish these distinguishing features of quantum mechanics at high energies in a collider setting.
  arXiv  Detail & Related papers  (2023-05-08T18:25:25Z)
• Bell inequalities and quantum entanglement in weak gauge bosons production at the LHC and future colliders [0.0]
  Quantum entanglement of weak interaction gauge bosons produced at colliders can be explored by computing the corresponding polarization density matrix. We consider the Higgs boson decays $Hto W W*$ and $Hto Z Z*$, in which $W*$ and $Z*$ are off-shell states. We show that a suitable instance of the Bell inequality is violated in $Hto Z Z*$ to a degree that can be tested at the LHC with future data.
  arXiv  Detail & Related papers  (2023-02-01T19:00:00Z)
• A Quantum Algorithm Framework for Discrete Probability Distributions with Applications to Rényi Entropy Estimation [13.810917492304565]
  We propose a unified quantum algorithm framework for estimating properties of discrete probability distributions. Our framework estimates $alpha$-R'enyi entropy $H_alpha(p)$ to within additive error $epsilon$ with probability at least $2/3$.
  arXiv  Detail & Related papers  (2022-12-03T08:01:55Z)
• Laboratory-frame tests of quantum entanglement in $H \to WW$ [0.0]
  Quantum entanglement between the two $W$ bosons resulting from the decay of a Higgs boson may be investigated in the dilepton channel $H to WW to ell nu ell nu$ The dilepton invariant mass distribution, already measured by the ATLAS and CMS Collaborations at the LHC, can be used to observe the quantum entanglement of the $WW$ pair.
  arXiv  Detail & Related papers  (2022-09-28T12:22:12Z)
• Testing entanglement and Bell inequalities in $H \to ZZ$ [0.0]
  We discuss quantum entanglement and violation of Bell inequalities in the $Hrightarrow ZZ$ decay. We derive sufficient and necessary conditions for entanglement in terms of only two parameters. The sensitivity to a violation of the Bell inequalities is at the $4.5sigma$ level.
  arXiv  Detail & Related papers  (2022-09-27T14:59:29Z)
• Sample optimal tomography of quantum Markov chains [23.427626096032803]
  A state on a tripartite quantum system $mathcalH_Aotimes mathcalH_B$ forms a Markov chain, i.e., quantum conditional independence, if it can be reconstructed from its marginal on $mathcalH_Aotimes mathcalH_B$. A quantum operation from $mathcalH_B$ to $mathcalH_BotimesmathcalH_C$ via the
  arXiv  Detail & Related papers  (2022-09-06T06:30:37Z)
• A New Look at the $C^{0}$-formulation of the Strong Cosmic Censorship Conjecture [68.8204255655161]
  We argue that for generic black hole parameters as initial conditions for Einstein equations, the metric is $C0$-extendable to a larger Lorentzian manifold. We prove it violates the "complexity=volume" conjecture for a low-temperature hyperbolic AdS$_d+1$ black hole dual to a CFT living on a ($d-1$)-dimensional hyperboloid $H_d-1$.
  arXiv  Detail & Related papers  (2022-06-17T12:14:33Z)
• Power-like potentials: from the Bohr-Sommerfeld energies to exact ones [49.1574468325115]
  Bohr-Sommerfeld Energies (BSE) extracted explicitly from the Bohr-Sommerfeld quantization condition are compared with the exact energies.<n>For physically important cases $m=1,4,6$ for the $100$th excited state BSE coincide with exact ones in 5-6 figures.
  arXiv  Detail & Related papers  (2021-07-31T21:37:50Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.