Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Alan J. Barr"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-49 (2023)
Abstract A rather general method for determining the spin density matrix of a multi-particle system from angular decay data is presented. The method is based on a Bloch parameterisation of the d-dimensional generalised Gell-Mann representation of ρ
Externí odkaz:
https://doaj.org/article/36de8e8fd37449b6a544923b3311a7e2
Autor:
Clelia Altomonte, Alan J. Barr
Publikováno v:
Physics Letters B, Vol 847, Iss , Pp 138303- (2023)
Recent instances of successful application of quantum information techniques to particle physics problems invite for an analysis of the mathematical details behind such connection. In this paper, we identify the Choi-Jamiolkowski isomorphism, or stat
Externí odkaz:
https://doaj.org/article/3d62c5c3beac437d88821d6f91988ec7
Publikováno v:
Quantum, Vol 7, p 1070 (2023)
We perform a detailed analysis of the possible violation of various Bell-type inequalities for systems of vector boson-antiboson pairs. Considering the general case of an overall scalar state of the bipartite system, we identify two distinct classes
Externí odkaz:
https://doaj.org/article/4c37786fe7274cb6bec571080b8ed45a
Autor:
Alan J. Barr
Publikováno v:
Physics Letters B, Vol 825, Iss , Pp 136866- (2022)
Higgs boson decays produce pairs of W bosons in a maximally entangled state, the spins of which can be expected to violate Bell inequalities. We show that the spin density matrix of the W± pair may be reconstructed experimentally from the directions
Externí odkaz:
https://doaj.org/article/3a3428a4a7e040989d3a4d3be15ff775
Publikováno v:
Quantum Reports, Vol 3, Iss 3, Pp 376-388 (2021)
We perform a comprehensive analysis of the set of parameters {ri} that provide the energy distribution of pure qutrits that evolve towards a distinguishable state at a finite time τ, when evolving under an arbitrary and time-independent Hamiltonian.
Externí odkaz:
https://doaj.org/article/4bfe21e44c0f48ada8624c9a028e5da2
Autor:
Ben C Allanach, Alan J Barr, Lee Drage, Christopher G Lester, Debbie Morgan, M. Andy Parker, Bryan R Webber, Peter Richardson
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Springer, 2001, 0103, pp.048
Journal of High Energy Physics, Springer, 2001, 0103, pp.048
The measurement of sparticle masses in the Minimal Supersymmetric Standard Model at the LHC is analysed, in the scenario where the lightest neutralino decays into three quarks. Such decays, occurring through the baryon-number violating coupling lambd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72934bcf7eb4806e0f2026c4c695fcfe
Autor:
Alan J Barr, Christopher G Lester
Publikováno v:
Journal of Physics G: Nuclear & Particle Physics; Dec2010, Vol. 37 Issue 12, p123001-123001, 1p