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The ANTARES neutrino telescope, to be immersed depth in the Mediterranean Sea, will consist of a three-dimensional matrix of 900 large area photomultiplier tubes housed in pressure-resistant glass spheres. The selection of the optimal photomultiplier was a critical step for the project and required an intensive phase of tests and developments carried out in(More)
A search for events with an imbalance in transverse momentum and with isolated high energy leptons has been carried out at the positron-proton collider HERA. One event with an e ? and five events with a are found together with evidence for undetected particles carrying transverse momentum. Within the Standard Model the dominant origin of events with this(More)
A thrust analysis of Large-Rapidity-Gap events in deep-inelastic ep collisions is presented , using data taken with the H1 detector at HERA in 1994. The average thrust of the nal states X, which emerge from the dissociation of virtual photons in the range 10 < Q 2 < 100 GeV 2 , grows with hadronic mass M X and implies a dominant 2-jet topology. Thrust is(More)
Despite dedicated research has been carried out to adequately map the distribution of the sperm whale in the Mediterranean Sea, unlike other regions of the world, the species population status is still presently uncertain. The analysis of two years of continuous acoustic data provided by the ANTARES neutrino telescope revealed the year-round presence of(More)
The primary aim of ANTARES is neutrino astronomy with upward going muons created in charged current muon neutrino interactions in the detector and its surroundings. Downward going muons are background for neutrino searches. These muons are the decay products of cosmic-ray collisions in the Earth's atmosphere far above the detector. This paper presents a(More)
The multiplicity structure of the hadronic system X produced in deep-inelastic processes at HERA of the type ep ! eXY , where Y is a hadronic system with mass M Y < 1:6 GeV and where the squared momentum transfer at the pY vertex, t, is limited to jtj < 1 GeV 2 , is studied as a function of the invariant mass M X of the system X. Results are presented on(More)
  • C Adloo, S Aid, +367 authors M Zurnedden
  • 2007
Quasi-elastic (z > 0:95) photo-production of (2S) mesons has been observed at HERA for photon-proton centre-of-mass energies in the range 40 to 160 GeV. The (2S) mesons were identiied through their decays tò + ` ? and to J== + ? , where the J== subsequently decays tò + ` ? , the lepton`being either a muon or an electron. The cross-section for quasi-elastic(More)
The elastic electroproduction of mesons is studied at HERA with the H1 detector for photon virtualities ½ É ¾ ½½ Î ¾ and hadronic centre of mass energies ¼ Ï ½¿¼ GeV. The É ¾ and Ø dependences of the cross section are extracted (Ø being the square of the four-momentum transfer to the target proton). When plotted as function of (É ¾ + Å ¾ Î) and scaled by(More)
A search for excited fermions ¢ ¡ of the first generation in £ ¤ ¦ ¥ scattering at the col-lider HERA is presented using H1 data with an integrated luminosity of 37 pb § ¨. All electroweak decays of excited fermions, © ¡ ¢ © ! are considered and all possible final states resulting from the ! or hadronic decays or decays into leptons of the first two(More)