18 Result(s)
within
A. Badertscher
English
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Article
The Gbar project, or how does antimatter fall?
The Einstein classical Weak Equivalence Principle states that the trajectory of a particle is independent of its composition and internal structure when it is only submitted to gravitational forces. This funda...
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Article
Open AccessErratum: new results on ν μ → ν τ appearance with the OPERA experiment in the CNGS beam
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Article
Open AccessNew results on ν μ → ν τ appearance with the OPERA experiment in the CNGS beam
The OPERA neutrino experiment is designed to perform the first observation of neutrino oscillations in direct appearance mode in the ν μ → ν ...
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Article
Open AccessAddendum: search for ν μ → ν e oscillations with the OPERA experiment in the CNGS beam
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Article
Open AccessSearch for ν μ → ν e oscillations with the OPERA experiment in the CNGS beam
A first result of the search for ν μ → ν e oscillations in the OPERA experiment, located at the Gran Sasso U...
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Article
Open AccessMeasurement of the neutrino velocity with the OPERA detector in the CNGS beam using the 2012 dedicated data
In spring 2012 CERN provided two weeks of a short bunch proton beam dedicated to the neutrino velocity measurement over a distance of 730 km. The OPERA neutrino experiment at the underground Gran Sasso Laborat...
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Article
Open AccessMeasurement of the neutrino velocity with the OPERA detector in the CNGS beam
The OPERA neutrino experiment at the underground Gran Sasso Laboratory has measured the velocity of neutrinos from the CERN CNGS beam over a baseline of about 730 km. The measurement is based on data taken by ...
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Article
Open AccessMeasurement of the atmospheric muon charge ratio with the OPERA detector
The OPERA detector at the Gran Sasso underground laboratory (LNGS) was used to measure the atmospheric muon charge ratio $R_{\mu}=N_{\mu^{+}}/...
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Article
Measurement of through-going particle momentum by means of multiple scattering with the ICARUS T600 TPC
The ICARUS collaboration has demonstrated, following the operation of a 600 ton (T600) detector at shallow depth, that the technique based on liquid argon time projection chambers is now mature. The study of r...
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Article
The pion–nucleon scattering lengths from pionic hydrogen and deuterium
This is the final publication of the ETH Zurich–Neuchâtel–PSI collaboration on the pionic hydrogen and deuterium precision X-ray experiments. We describe the recent hydrogen 3p–1s measurement, report on the dete...
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Article
Kinetic energy of π− p-atoms in liquid and gaseous hydrogen
We have measured the Doppler broadening of neutron time-of-flight spectra from the reaction π− p → π0 + n in atomic states. From the data, we infer that the kinetic energy distribution of π− ...
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Chapter and Conference Paper
Working group on ππ and πN interactions
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Chapter and Conference Paper
Measurement of the strong interaction shift and width of the 1S levels in pionic hydrogen and deuterium
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Chapter and Conference Paper
Is isospin symmetry violated in the pion-nucleon sector at threshold?
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Article
Precision measurement of antiprotonic hydrogen and deuterium X-rays
X-rays from antiprotonic hydrogen and deuterium have been measured at low pressures. Using the cyclotron trap, a 105 MeV/c antiproton beam from LEAR was stopped with an efficiency of 86% in 30 mbar hydrogen ga...
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Article
Search for the electron-positron decay of an axionlike particle from a 590 MeV proton beam dump
A search was made for the decay of a light neutral particle into ane + e −-pair behind the dump of the PSI (formerly SIN) 590 MeV proton beam. The detector consisted of two counter triggered optical spark chamber...
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Article
Search for the two-photon decay of a light penetrating particle from a 590 MeV proton beam dump
A search was performed for the two-photon decay of a light penetrating particle (e.g. an axion) produced in the dump of the 590 MeV proton beam of the Swiss Institute for Nuclear Research (SIN). The apparatus ...
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Article
New upper limits for muon-electron conversion in sulfur
