129 citations · 851 across the 31 of their papers we have counts for
31 papers
The Phase-I Trigger Readout Electronics Upgrade of the ATLAS Liquid Argon Calorimeters
G. Aad, A. V. Akimov, K. Al Khoury +195
The Phase-I trigger readout electronics upgrade of the ATLAS Liquid Argon calorimeters enhances the physics reach of the experiment during the upcoming operation at increasing Larg…
Search for Highly-Ionizing Particles in pp Collisions at the LHC's Run-1 Using the Prototype MoEDAL Detector
B. Acharya, J. Alexandre, P. Benes +68
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…
First experimental search for production of magnetic monopoles via the Schwinger mechanism
B. Acharya, J. Alexandre, P. Benes +64
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 ma…
Sub-Doppler spectra of sodium lines in a wide range of magnetic field: theoretical study
Rodolphe Momier, Aram V. Papoyan, Claude Leroy
We compute the interaction of a sodium vapor with a static magnetic field ranging from 0 up to 1 Tesla, which allows to obtain the behavior of all Zeeman transitions as a function…
Inverse square root level-crossing quantum two-state model
T. A. Ishkhanyan, A. V. Papoyan, A. M. Ishkhanyan +1
We introduce a new unconditionally solvable level-crossing two-state model given by a constant-amplitude optical field configuration for which the detuning is an inverse-square-roo…
New standard magnetic field values determined by cancellations of and atomic vapors transitions
Rodolphe Momier, Artur Aleksanyan, Emil Gazazyan +2
In this article, we study the theoretical behaviour of all the possible hyperfine transitions (, and ) between the and states of and ${}^…
All magnetic field values cancelling line transitions of alkali metal atoms
Artur Aleksanyan, Rodolphe Momier, Emil Gazazyan +2
In this work, , and transitions between magnetic sublevels of the line of all alkali atoms are considered analytically. General block Hamiltonian matrices in p…
Transition cancellations of Rb and Rb atoms in a magnetic field setting new standards
Artur Aleksanyan, Rodolphe Momier, Emil Gazazyan +2
We have analyzed the magnetic field dependences of intensities of all the optical transitions between magnetic sublevels of hyperfine levels, excited with , and pola…
First search for dyons with the full MoEDAL trapping detector in 13 TeV pp collisions
B. Acharya, J. Alexandre, P. Benes +66
The MoEDAL trapping detector, consists of approximately 800 kg of aluminium volumes. It was exposed during Run-2 of the LHC program to 6.46 fb^-1 of 13 TeV proton-proton collisions…
Proof of the feasibility of a nanocell-based wide-range optical magnetometer
Emmanuel Klinger, Hrayr Azizbekyan, Armen Sargsyan +3
We present an experimental scheme performing scalar magnetometry based on the fitting of Rb D line spectra recorded by derivative selective reflection spectroscopy from an opti…
Resolution-enhanced quantitative spectroscopy of atomic vapor in optical nanocells based on second-derivative processing of spectra
Armen Sargsyan, Arevik Amiryan, Yevgenya Pashayan-Leroy +3
We present a method for recovery of narrow homogeneous spectral features out of broad inhomogeneous overlapped profile based on second-derivative processing of the absorption spect…
Magnetic monopole search with the full MoEDAL trapping detector in 13 TeV collisions interpreted in photon-fusion and Drell-Yan production
MoEDAL Collaboration, B. Acharya, J. Alexandre +66
MoEDAL is designed to identify new physics in the form of stable or pseudostable highly ionizing particles produced in high-energy Large Hadron Collider (LHC) collisions. Here we u…
Search for magnetic monopoles with the MoEDAL forward trapping detector in 2.11 fb of 13 TeV proton-proton collisions at the LHC
MoEDAL Collaboration, B. Acharya, J. Alexandre +68
We update our previous search for trapped magnetic monopoles in LHC Run 2 using nearly six times more integrated luminosity and including additional models for the interpretation o…
Symmetry breaking exhibition by magnetic field induced explicit circular dichroism
A. Tonoyan, A. Sargsyan, E. Klinger +5
In this letter we demonstrate universal symmetry breaking by means of magnetically induced circular dichroism. Magnetic field induces forbidden at zero field atomic transitions bet…
A periodic level-crossing two-state model of a general Heun class
G. Saget, A. M. Ishkhanyan, C. Leroy +1
We present a specific constant-amplitude periodic level-crossing model of the semi-classical quantum time-dependent two-state problem that belongs to a general Heun class of field…
Adiabatic tracking for photo- and magneto-association of Bose-Einstein condensates with Kerr nonlinearities
M. Gevorgyan, S. Guérin, C. Leroy +2
We develop the method of adiabatic tracking for photo- and magneto-association of Bose-Einstein atomic condensates with models that include Kerr type nonlinearities. We show that t…
Magnetic field--induced modification of selection rules for Rb D line monitored by selective reflection from a vapor nanocell
Emmanuel Klinger, Armen Sargsyan, Ara Tonoyan +4
Magnetic field-induced giant modification of the probabilities of five transitions of of Rb and three transitions of $5S_{1/2},…
Precision Luminosity of LHC Proton-Proton Collisions at 13 TeV Using Hit-Counting with TPX Pixel Devices
Andre Sopczak, Babar Ali, Thanawat Asawatavonvanich +19
A network of Timepix (TPX) devices installed in the ATLAS cavern measures the LHC luminosity as a function of time as a stand-alone system. The data were recorded from 13 TeV proto…
Search for magnetic monopoles with the MoEDAL forward trapping detector in 13 TeV proton-proton collisions at the LHC
MoEDAL Collaboration, B. Acharya, J. Alexandre +68
MoEDAL is designed to identify new physics in the form of long-lived highly-ionising particles produced in high-energy LHC collisions. Its arrays of plastic nuclear-track detectors…
Decoupling of hyperfine structure of Cs line in strong magnetic field studied by selective reflection from a nanocell
Armen Sargsyan, Emmanuel Klinger, Grant Hakhumyan +4
Decoupling of total electronic and nuclear spin moments of Cs atoms in external magnetic field for the case of atomic line, leading to onset of the hyperfine Paschen-Back reg…
Search for magnetic monopoles with the MoEDAL prototype trapping detector in 8 TeV proton-proton collisions at the LHC
MoEDAL Collaboration, B. Acharya, J. Alexandre +66
The MoEDAL experiment is designed to search for magnetic monopoles and other highly-ionising particles produced in high-energy collisions at the LHC. The largely passive MoEDAL det…
MPX Detectors as LHC Luminosity Monitor
Andre Sopczak, Babar Ali, Nedaa Asbah +15
A network of 16 Medipix-2 (MPX) silicon pixel devices was installed in the ATLAS detector cavern at CERN. It was designed to measure the composition and spectral characteristics of…
Chaotic spin-spin entanglement on a recursive lattice
Levon Chakhmakhchyan, Stéphane Guérin, Claude Leroy
We propose an exactly solvable multisite interaction spin-1/2 Ising-Heisenberg model on a triangulated Husimi lattice for the rigorous studies of chaotic entanglement. By making us…
Generation of entanglement in systems of intercoupled qubits
Levon Chakhmakhchyan, Claude Leroy, Nerses Ananikian +1
We consider systems of two and three qubits, mutually coupled by Heisenberg-type exchange interaction and interacting with external laser fields. We show that these systems allow o…