Concept

Neutron cross section

Publications associées (336)

Measurement of exclusive ρ+ρ- production in mid-virtuality two-photon interactions and study of the γγ* → ρρ process at LEP

Qian Wang, Aurelio Bay, Horst Vogel, Eduardo Sanchez, Zhirui Xu, Werner Lustermann, Liang Sun, Jian Zhao, Ji Hyun Kim, Zheng Wang, Matthias Weber, Xiao Wang

Exclusive ρ+ρ- production in two-photon collisions between a quasi-real photon, γ, and a mid-virtuality photon, γ*, is studied with data collected at LEP at centre-of-mass energies 183 GeV≤√s≤209 GeV with a total integrated luminosity of 684.8 pb-1. The cr ...

2005

Development and application of a decomposition methodology for interpretation of reactivity effect discrepancies

Rakesh Chawla, Filippo Tani, Fabian Jatuff

With reactivity being the most important integral reactor physics quantity - and simultaneously the one that can be measured with the highest accuracy there is a great interest in understanding how possible space- and energy-dependent data and/or modeling ...

ANS2004

Sign of the state-to-state steric asymmetry of rotationally inelastic atom-molecule collisions

Marcel Drabbels

The sign of the theoretically predicted steric asymmetry S in rotational inelastic state resolved molecule–atom collisions is questioned. It is shown that the sign of the T-matrix obtained on a basis of non-oriented rotational states of the molecule depend ...

2004

Inclusive jet production in two-photon collisions at LEP

Aurelio Bay

Inclusive jet production, e+e- → e +e- jet X, is studied using 560 pb-1 of data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 209 GeV. The inclusive differential cross section is measured using a kt jet algorithm as a fun ...

2004

The performance of a multiplexing three-axis spectrometer

Henrik Moodysson Rønnow

A novel multiplexing three-axis spectrometer for thermal neutrons has been tested for single-crystal spectroscopy. Measuring the entire 2D dispersion manifold in the bc plane of the spin-Peierls compound CuGeO3, we demonstrate that the spectrometer fascili ...

2004

Muon-pair and tau-pair production in two-photon collisions at LEP

Aurelio Bay

The QED processes e+e-→e+e -μ+μ- and e+e -→e+e-τ+τ- are studied with the L3 detector at LEP using an untagged data sample collected at centre-of-mass energies 161 GeV≤√s≤209 GeV. The τ-pairs are observed through the associated decay of one τ into eνν and t ...

2004

Measurement of exclusive ρ+ρ- production in high-Q2 two-photon collisions at LEP

Aurelio Bay

Exclusive ρ+ρ- production in two-photon collisions involving a single highly-virtual photon is studied for the first time with data collected by the L3 experiment at LEP at centre-of-mass energies 89

2004

Tritium transport experiments on the JET tokamak

Henri Weisen

An overview is given of the experimental method, the analysis technique and the results for trace tritium experiments conducted on the JET tokamak in 2003. Observations associated with events such as sawtooth collapses, neo-classical tearing modes and edge ...

2004

Measurement of K+K- production in two-photon collisions in the resonant-mass region

Olivier Schneider, Aurelio Bay, Chao Wang, Tagir Aushev, Sun Hee Kim, Yuan Yuan, Ji Hyun Kim, Jing Li

K+K- production in two-photon collisions has been studied using a large data sample of 67 fb-1 accumulated with the Belle detector at the KEKB asymmetric e+e- collider. We have measured the cross section for the process γγ → K +K- for center-of-mass energi ...

2004

Transplanckian collisions in TeV scale gravity

Riccardo Rattazzi

Collisions at transplanckian energies offer model independent tests of TeV scale gravity. One spectacular signal is given by black-hole production, though a full calculation of the corresponding cross-section is not yet available. Another signal is given b ...

2004

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