Armen Beglarian

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  • C. Adloff, V. Andreev, +160 authors H. Krehbiel
  • 1999
The inclusive single and double differential cross-sections for neutral and charged current processes with four-momentum transfer squared É ¾ between ½½¼ and ¿¼ ¼¼¼ Î ¾ and with Bjorken Ü between ¼¼¼¿¾ and ¼ are measured in · Ô collisions. The data were taken with the H1 detector at HERA between 1994 and 1997, and they correspond to an integrated luminosity(More)
The elastic electroproduction of mesons is studied at HERA with the H1 detector for a photon virtuality in the range ½ É ¾ ¼ Î ¾ and for a hadronic centre of mass energy in the range ¿¼ Ï ½½¼ GeV. The shape of the () mass distribution in the resonance region is measured as a function of É ¾. The full set of spin density matrix elements is determined, and(More)
  • C. Adloff, V. Andreev, +129 authors H. K. Kästli
  • 1999
The electroproduction of  and´¾Ëµ mesons is studied in elastic, quasi-elastic and inclusive reactions for four momentum transfers ¾ É ¾ ¼ GeV ¾ and photon-proton centre of mass energies ¾¾ Ï ½½¼ GeV. The data were taken with the H1 detector at the electron proton collider HERA in the years 1995 to 1997. The total virtual photon-proton cross section for(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)
Internal jet structure in dijet production in deep-inelastic scattering is measured with the H1 detector at HERA. Jets with transverse energies E T,Breit > 5 GeV are selected in the Breit frame employing k ⊥ and cone jet algorithms. In the kinematic region of squared momentum transfers 10 < Q 2 120 GeV 2 and x-Bjorken values 2 · 10 −4 x Bj 8 · 10 −3 , jet(More)
Deep–inelastic scattering events with a leading baryon have been detected by the H1 experiment at HERA using a forward proton spectrometer and a forward neutron calorimeter. Semi–inclusive cross sections have been measured in the kinematic region 2 Q 2 50 GeV 2 , 6 10 ?5 x 6 10 ?3 and baryon p T 200 MeV, for events with a final state proton with energy 580(More)
Jet event rates in deep inelastic ep scattering at HERA are investigated applying the modiied JADE jet algorithm. The analysis uses data taken with the H1 detector in 1994 and 1995. The data are corrected for detector and hadronization eeects and then compared with perturbative QCD predictions using next-to-leading order calculations. The strong coupling(More)
Deep-inelastic positron-proton interactions at low values of Bjorken-x down to x ≈ 4 · 10 −5 which give rise to high transverse momentum π •-mesons are studied with the H1 experiment at HERA. The inclusive cross section for π •-mesons produced at small angles with respect to the proton remnant (the forward region) is presented as a function of the(More)
The focus in High-Performance Computing increasingly turns to energy efficiency. Therefore the pure concentration on floating point operations and runtime performance is no longer sufficient. In terms of hardware, this change of paradigm has already taken place: The GREEN500 list as counterpart to the runtime performance oriented TOP500 list has been(More)