Alexandre, J - Resultados da pesquisa

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MoEDAL search in the CMS beam pipe for magnetic monopoles produced via the Schwinger effect / MoEDAL Collaboration
We report on a search for magnetic monopoles (MMs) produced in ultraperipheral Pb--Pb collisions during Run-1 of the LHC. The beam pipe surrounding the interaction region of the CMS experiment was exposed to 184.07 µ b$^{-1}$ of Pb--Pb collisions at 2.76 TeV center-of-mass energy per collision in December 2011, before being removed in 2013. [...]
arXiv:2402.15682.- 2024-08-15 - 7 p. - Published in : Phys. Rev. Lett. 133 (2024) 071803 Fulltext: 2402.15682 - PDF; Publication - PDF;

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Search for Highly-Ionizing Particles in pp Collisions During LHC Run-2 Using the Full MoEDAL Detector / MoEDAL Collaboration
This search for Magnetic Monopoles (MMs) and High Electric Charge Objects (HECOs) with spins 0, 1/2 and 1, uses for the first time the full MoEDAL detector, exposed to 6.6 fb^-1 proton-proton collisions at 13 TeV. [...]
arXiv:2311.06509. - 7 p.
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Oscillation probabilities for a $\rho$$\tau$-symmetric non-Hermitian two-state system / Alexandre, Jean (King's Coll. London) ; Dale, Madeleine (Rome U., Tor Vergata ; INFN, Rome ; Cyprus U. ; Humboldt U., Berlin) ; Ellis, John (King's Coll. London ; CERN) ; Mason, Robert (Liverpool U.) ; Millington, Peter (Manchester U.)
There is growing interest in viable quantum theories with$\rho$$\tau$-symmetric non-Hermitian Hamiltonians, but a formulation of transition matrix elements consistent with positivity and perturbative unitarity has so far proved elusive. [...]
arXiv:2302.11666 ; KCL-PH-TH/2023-17 ; CERN-TH-2023-032 ; LTH 1334. - 5 p.
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MoEDAL-MAPP, an LHC Dedicated Detector Search Facility / MoEDAL-MAPP Collaboration
During LHC's Run-2 the MoEDAL experiment, the LHC's first dedicated search experiment, took over 6 fb^-1 of data at IP8, with p-p and Pb-Pb collisions, operating with 100% efficiency. [...]
arXiv:2209.03988. - 39 p.
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Search for highly-ionizing particles in $pp$ collisions at the LHC’s Run-1 using the prototype MoEDAL detector / MoEDAL Collaboration
A search for highly electrically charged objects (HECOs) and magnetic monopoles is presented using 2.2 fb-1 of p - p collision data taken at a centre of mass energy (ECM) of 8 TeV by the MoEDAL detector during LHC's Run-1. The data were collected using MoEDAL's prototype Nuclear Track Detector array and the Trapping Detector array. [...]
arXiv:2112.05806.- 2022-08-10 - 16 p. - Published in : Eur. Phys. J. C 82 (2022) 694 Fulltext: document - PDF; 2112.05806 - PDF;

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Search for magnetic monopoles produced via the Schwinger mechanism / MoEDAL Collaboration
Schwinger showed that electrically-charged particles can be produced in a strong electric field by quantum tunnelling through the Coulomb barrier. By electromagnetic duality, if magnetic monopoles (MMs) exist, they would be produced by the same mechanism in a sufficiently strong magnetic field. [...]
arXiv:2106.11933.- 2022-02-02 - 16 p. - Published in : Nature 602 (2022) 63-67 Fulltext: PDF; External link: Physics Today article

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Discrete spacetime symmetries, second quantization, and inner products in a non-Hermitian Dirac fermionic field theory / Alexandre, Jean (King's Coll. London) ; Ellis, John (King's Coll. London ; NICPB, Tallinn ; CERN) ; Millington, Peter (Nottingham U.)
We extend to a non-Hermitian fermionic quantum field theory with PT symmetry our previous discussion of second quantization, discrete symmetry transformations, and inner products in a scalar field theory [arXiv:2006.06656]. For illustration, we consider a prototype model containing a single Dirac fermion with a parity-odd, anti-Hermitian mass term. [...]
arXiv:2201.11061; KCL-PH-TH/2021-79; CERN-TH-2021-172.- 2022-09-06 - 29 p. - Published in : Phys. Rev. D 106 (2022) 6 Fulltext: 2201.11061 - PDF; Publication - PDF;

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Timepix3 as solid-state time-projection chamber in particle and nuclear physics / MOEDAL Collaboration
Timepix3 devices are hybrid pixel detectors developed within the Medipix3 collaboration at CERN providing a simultaneous measurement of energy (ToT) and time of arrival (ToA) in each of its 256$\times$256 pixels (pixel pitch: 55 µm). The timestamp resolution below 2 ns allows a measurement of charge carrier drift times, so that particle trajectories can be reconstructed in 3D on a microscopic level ($z$-resolution: 30-60 µm). [...]
SISSA, 2021 - 8 p. - Published in : PoS ICHEP2020 (2021) 720 Fulltext: PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.720

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MoEDAL Run-3 Technical Proposal / Acharya, B ; Alexandre, J ; Benes, P ; Bergmann, B ; Bernabeu, J ; Bevan, A ; Branzas, H ; Burian, P ; Campbell, M ; Cecchini, S et al.
During LHC’s Run-2 the MoEDAL experiment took 6.7 inv. [...]
CERN-LHCC-2021-006 ; LHCC-P-017. - 2021.
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Discrete spacetime symmetries and particle mixing in non-Hermitian scalar quantum field theories / Alexandre, Jean (King's Coll. London) ; Ellis, John (King's Coll. London ; NICPB, Tallinn ; CERN) ; Millington, Peter (Nottingham U.)
We discuss second quantization, discrete symmetry transformations and inner products in free non-Hermitian scalar quantum field theories with PT symmetry, focusing on a prototype model of two complex scalar fields with anti-Hermitian mass mixing. Whereas the definition of the inner product is unique for theories described by Hermitian Hamiltonians, its formulation is not unique for non-Hermitian Hamiltonians. [...]
arXiv:2006.06656; KCL-PH-TH/2020-19; CERN-TH-2020-063.- 2020-12-29 - 20 p. - Published in : Phys. Rev. D 102 (2020) 125030 Article from SCOAP3: PDF; Fulltext: PDF;

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Veja também: nomes de autores similares
14	Alexandre, J.
47	Alexandre, Jean

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