20 Result(s)
within
S. Baghdasaryan
Quantum Field Theories, String Theory
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Article
Open AccessMeasurement of inclusive \(\varvec{ep}\) cross sections at high \({\varvec{Q}^{2}}\) at \(\varvec{\sqrt{s}}=225\) and 252 GeV and of the longitudinal proton structure function \({\varvec{F}_{\varvec{L}}}\) at HERA
Inclusive \(ep\) e p ...
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Open AccessErratum to: Determination of the integrated luminosity at HERA using elastic QED compton events
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Article
Open AccessElastic and proton-dissociative photoproduction of J/ψ mesons at HERA
Cross sections for elastic and proton-dissociative photoproduction of J/ψ mesons are measured with the H1 detector in positron-proton collisions at HERA. The data were collected at ep centre-of-mass energies ...
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Article
Open AccessMeasurement of charged particle spectra in deep-inelastic ep scattering at HERA
Charged particle production in deep-inelastic ep scattering is measured with the H1 detector at HERA. The kinematic range of the analysis covers low photon virtualities, 5<Q 2<100 GeV2, and small ...
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Article
Open AccessCombination and QCD analysis of charm production cross section measurements in deep-inelastic ep scattering at HERA
Measurements of open charm production cross sections in deep-inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections
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Article
Open AccessErratum to: Measurement of D ∗± meson production and determination of \(F_{2}^{c\bar{c}}\) at low Q 2 in deep-inelastic scattering at HERA
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Open AccessDetermination of the integrated luminosity at HERA using elastic QED Compton events
A measurement of the integrated luminosity at the ep collider HERA is presented, exploiting the elastic QED Compton process ep→eγp. The electron and the photon are detected in the backward calorimeter of the H1 e...
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Article
Open AccessCombined inclusive diffractive cross sections measured with forward proton spectrometers in deep inelastic ep scattering at HERA
A combination of the inclusive diffractive cross section measurements made by the H1 and ZEUS Collaborations at HERA is presented. The analysis uses samples of diffractive deep inelastic ep scattering data at a c...
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Open AccessMeasurement of beauty photoproduction near threshold using di-electron events with the H1 detector at HERA
The cross section for \(ep \rightarrow e\, b\bar{b} X\) in photoproduction is measured with the H1 detector at the ep-c...
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Article
Open AccessInclusive deep inelastic scattering at high Q 2 with longitudinally polarised lepton beams at HERA
Inclusive e ± p single and double differential cross sections for neutral and charged current deep inelastic scattering processes are measured with the H1 detector ...
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Article
Open AccessInclusive measurement of diffractive deep-inelastic scattering at HERA
The diffractive process ep→eXY, where Y denotes a proton or its low mass excitation with M Y <1.6 GeV, is studied with the H1 experiment at HERA. The analysis is...
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Article
Open AccessMeasurement of beauty and charm photoproduction using semi-muonic decays in dijet events at HERA
Measurements of cross sections for beauty and charm events with dijets and a muon in the photoproduction regime at HERA are presented. The data were collected with the H1 detector and correspond to an integrat...
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Article
Open AccessMeasurement of inclusive and dijet D∗ meson cross sections in photoproduction at HERA
The inclusive photoproduction of D ∗ mesons and of D ∗-tagged dijets is investigated with the H1 detector at the ep collider HERA. The kinematic region covers small photon virtualities Q 2<2 GeV2 and photon–proto...
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Article
Open AccessMeasurement of dijet production in diffractive deep-inelastic scattering with a leading proton at HERA
The cross section of diffractive deep-inelastic scattering ep→eXp is measured, where the system X contains at least two jets and the leading final state proton is detected in the H1 Forward Proton Spectrometer. T...
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Article
Open AccessMeasurement of the azimuthal correlation between the most forward jet and the scattered positron in deep-inelastic scattering at HERA
Deep-inelastic positron-proton scattering events at low photon virtuality, Q 2, with a forward jet, produced at small angles with respect to the proton beam, are measured with the H1 detector at H...
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Open AccessMeasurement of the diffractive longitudinal structure function \(F_{L}^{D}\) at HERA
First measurements are presented of the diffractive cross section σ ep→eXY at centre-of-mass energies
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Article
Open AccessMeasurement of photon production in the very forward direction in deep-inelastic scattering at HERA
The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positron–proton scattering at HERA. The data are taken with the H1 detector in the years 20...
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Article
Open AccessMeasurement of D ∗± meson production and determination of \(F_{2}^{c\bar{c}}\) at low Q 2 in deep-inelastic scattering at HERA
Inclusive production of D ∗ mesons in deep-inelastic ep scattering at HERA is studied in the range 5<Q 2<100 GeV2 of the photon virtuality and 0.02<y<0.7 of the ine...
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Article
Open AccessMeasurement of the inclusive e ± p scattering cross section at high inelasticity y and of the structure function F L
A measurement is presented of the inclusive neutral current e ± p scattering cross section using data collected by the H1 experiment at HERA during the years 2003 t...
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Article
Open AccessSearch for squarks in R-parity violating supersymmetry in ep collisions at HERA
A search for squarks in R-parity violating supersymmetry is performed in e ± p collisions at HERA using the H1 detector. The full data sample taken at a centre-of-m...
