195 citations · 734 across the 9 of their papers we have counts for
9 papers
Velocity selected production of metastable positronium
C. Amsler, M. Antonello, A. Belov +52
Positronium in the metastable state exhibits a low electrical polarizability and a long lifetime (1140 ns) making it a promising candidate for interferometry experiments wit…
Producing long-lived Ps via laser excitation in magnetic and electric fields
S. Aghion, C. Amsler, M. Antonello +62
Producing positronium (Ps) in the metastable state is of interest for various applications in fundamental physics. We report here about an experiment in which Ps atom…
Measurement of antiproton annihilation on Cu, Ag and Au with emulsion films
S. Aghion, C. Amsler, A. Ariga +69
The characteristics of low energy antiproton annihilations on nuclei (e.g. hadronization and product multiplicities) are not well known, and Monte Carlo simulation packages that us…
Search for long-lived neutral particles decaying into lepton jets in proton--proton collisions at = 8 TeV with the ATLAS detector
ATLAS Collaboration
Several models of physics beyond the Standard Model predict neutral particles that decay into final states consisting of collimated jets of light leptons and hadrons (so-called "le…
Search for Scalar Diphoton Resonances in the Mass Range GeV with the ATLAS Detector in Collision Data at = 8
ATLAS Collaboration
A search for scalar particles decaying via narrow resonances into two photons in the mass range GeV is performed using 20.3 fb of = 8 TeV collision…
Evidence for Electroweak Production of in Collisions at TeV with the ATLAS Detector
ATLAS Collaboration
This Letter presents the first study of , same-electric-charge diboson production in association with two jets, using 20.3 fb of proton--proton collision d…
Measurement of the parity-violating asymmetry parameter alpha_b and the helicity amplitudes for the decay Lambda_b->J/psi+Lambda with the ATLAS detector
ATLAS Collaboration
A measurement of the parity-violating decay asymmetry parameter, alpha_b, and the helicity amplitudes for the decay Lambda_b->J/psi(mu mu)+Lambda(p pi) is reported. The analysis is…
Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at =8 TeV with the ATLAS detector
ATLAS Collaboration
A search is presented for production of dark matter particles recoiling against a leptonically decaying Z boson in 20.3 fb of pp collisions at =8 TeV with the ATLA…
Measurement of the 4l Cross Section at the Z Resonance and Determination of the Branching Fraction of Z->4l in pp Collisions at sqrt(s) = 7 and 8 TeV with ATLAS
ATLAS Collaboration
Measurements of four-lepton (4, ) production cross sections at the resonance in collisions at the LHC with the ATLAS detector are presented. For dilepton a…