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Search for light gravitinos in events with photons and missing transverse momentum at HERA

A search for gravitinos produced in e(+/-)p collisions is performed using the H1 detector at HERA. The data were taken at a centre-of-mass energy of 319 GeV and correspond to an integrated luminosity of 64.3 pb(-1) for e(+)p collisions and 13.5 pb(-1) for e(-)p collisions. If R-parity is not conserved, the t-channel exchange of a selectron can produce a neutralino, which, in models where the gravi

Measurement of anti-deuteron photoproduction and a search for heavy stable charged particles at HERA

The cross section for anti-deuteron photoproduction is measured at HERA at a mean centre-of-mass energy of W-gammap=200 GeV in the range 0.2 < p(T)/M < 0.7 and y < 0.4, where M, p(T) and y are the mass, transverse momentum and rapidity of the anti-deuteron in the HERA laboratory frame, respectively. The numbers of anti-deuterons per event are found to be similar in photoproduction to those in cent

Inclusive production of D+, D-0, D-s(+) and D*(+) mesons in deep inelastic scattering at HERA

Inclusive production cross sections are measured in deep inelastic scattering at HERA for meson states composed of a charm quark and a light antiquark or the charge conjugate. The measurements cover the kinematic region of photon virtuality 2 < Q(2) < 100 GeV2, inelasticity 0.05 < y < 0.7, D meson transverse momenta p(t)( D) greater than or equal to 2.5 GeV and pseudorapidity |eta( D)| less than o

Measurement and QCD analysis of neutral and charged current cross sections at HERA

The inclusive e(+)p single and double differential cross sections for neutral and charged current processes axe measured with the H1 detector at HERA. The data were taken in 1999 and 2000 at a centre-of-mass energy of roots = 319 GeV and correspond to an integrated luminosity of 65.2 pb(-1). The cross sections are measured in the range of four-momentum transfer squared Q(2) between 100 and 30 000

Multi-electron production at high transverse momenta in ep collisions at HERA

Multi-electron production is studied at high electron transverse momentum in positron- and electron-proton collisions using the H1 detector at HERA. The data correspond to an integrated luminosity of 115 pb(-1). Di-electron and tri-electron event yields are measured. Cross sections are derived in a restricted phase space region dominated by photon-photon collisions. In general good agreement is fo

Inclusive V-0 production cross sections from 920 GeV fixed target proton-nucleus collisions

Inclusive differential cross sections dsigma(pA)/dx(F) and dsigma(pA)/dp(t)(2) for the production of K-S(0), Lambda, and (&ULambda;) over bar particles are measured at HERA in proton-induced reactions on C, Al, Ti, and W targets. The incident beam energy is 920 GeV, corresponding to roots = 41.6 GeV in the proton-nucleon system. The ratios of differential cross sections dsigma(pA)(K-S(0))/dsig

Search for squark production in R-parity violating supersymmetry at HERA

A search for squarks in R-parity violating supersymmetry is performed in e(+/-)p collisions at HERA using the H1 detector. The data were taken at a centre-of-mass energy of 319 GeV and correspond to an integrated luminosity of 64.3 pb(-1) for e (+) p collisions and 13.5 pb(-1) for e(-)p collisions. The resonant production of squarks via a Yukawa coupling lambda' is considered, taking into account

Inclusive dijet production at low Bjorken-x in deep inelastic scattering

Dijet production in deep inelastic ep scattering is investigated in the region of low values of the Bjorken-variable x (10(-4) < x < 10(-2)) and low photon virtualities Q(2) (5 < Q(2) < 100 GeV2). The measured dijet cross sections are compared with perturbative QCD calculations in next-to-leading order. For most dijet variables studied, these calculations can provide a reasonable description of th

Search for new physics in e +/- q contact interactions at HERA

Deep-inelastic e(+/-) p scattering at high squared momentum transfer Q(2) up to 30 000 GeV2 is used to search for eq contact interactions associated to scales far beyond the HERA centre of mass energy. The neutral current cross section measurements dsigma / dQ(2), corresponding to integrated luminosities of 16.4 pb(-1) of e(-) p data and 100.8 pb(-1) of e(+) p data, are well described by the Stand

Measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions

Using the HERA-B detector, the b (b) over bar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b (b) over bar production was tagged via inclusive bottom quark decays into J/psi by exploiting the longitudinal separation of J/psi --> l(+)l(-) decay vertices from the primary proton-nucleus interaction. Both e(+)e(-) and mu(+)mu(-) channels ha

Isolated electrons and muons in events with missing transverse momentum at HERA

A search for events with a high-energy isolated electron or muon and missing transverse momentum has been performed at the electron-proton collider HERA using an integrated luminosity of 13.6 pb(-1) in e(-) p scattering and 104.7 pb(-1) in e(+) p scattering. Within the Standard Model such events are expected to be mainly due to W boson production with subsequent leptonic decay. In e(-) p interacti

Evidence for a narrow anti-charmed baryon state

A narrow resonance in D*(-)p and D*(+)(p) over bar invariant mass combinations is observed in inelastic electron-proton collisions at centre-of-mass energies of 300 GeV and 320 GeV at HERA. The resonance has a mass of 3099 +/- 3(stat.) +/- 5(syst.) MeV and a measured Gaussian width of 12 +/- 3(stat.) MeV, compatible with the experimental resolution. The resonance is interpreted as an anti-charmed

Search for single top quark production in ep collisions at HERA

A search for single top quark production is performed in e(+/-) pcollisions at HERA. The search exploits data corresponding to an integrated luminosity of 118.3 pb(-1). A model for the anomalous production of top quarks in a flavour changing neutral current process involving a tugamma coupling is investigated. Decays of top quarks into a b quark and a W boson are considered in the leptonic and the

Measurement of prompt photon cross sections in photoproduction at HERA

Results are presented on the photoproduction of isolated prompt photons, inclusively and associated with jets, in the gammap center of mass energy range 142 < W < 266 GeV. The cross sections are measured for the transverse momentum range of the photons 5 < E. T < 10 GeV and for associated jets with E-T(jet) > 4.5 GeV. They are measured differentially as a function of E-T(gamma), E-T(jet), the pseu

A general search for new phenomena in ep scattering at HERA

A model-independent search for deviations from the Standard Model prediction is performed in e(+) p and e(-) p collisions at HERA using H1 data corresponding to an integrated luminosity of 117 pb(-1). For the first time all event topologies involving isolated electrons, photons, muons, neutrinos and jets with high transverse momenta are investigated in a single analysis. Events are assigned to exc

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Master’s Dissertation Structural Mechanics Report TV SM -5233 BJÖ RN PED ERSEN C O N C EPTU A L D Y N A M IC A N A LY SIS O F A V EH IC LE B O D Y BJÖRN PEDERSEN CONCEPTUAL DYNAMIC ANALYSIS OF A VEHICLE BODY 5233HO.indd 15233HO.indd 1 2018-10-19 15:37:512018-10-19 15:37:51 DEPARTMENT OF CONSTRUCTION SCIENCES DIVISION OF STRUCTURAL MECHANICS ISRN LUTVDG/TVSM--18/5233--SE (1-103) | ISSN 0281-6679 MA

https://www.byggmek.lth.se/fileadmin/byggnadsmekanik/publications/tvsm5000/web5233.pdf - 2026-05-04

Framsida Sthlm

Framsida Sthlm WPSS WORKING PAPERS IN SCANDINAVIAN SYNTAX December 2023 Issue 109 Working Papers in Scandinavian Syntax is an electronic publication for current articles relating to the study of Scandinavian syntax. The articles appearing herein are previously unpublished reports of ongoing research activities and may subsequently appear, revised or unrevised, in other publications. The WPSS homep

https://projekt.ht.lu.se/fileadmin/user_upload/sol/ovrigt/projekt_grimm/working_papers/2023-dec/WPSS_109.pdf - 2026-05-04

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From Maktab to Madrassa: Afghan Girls and the Forced Choice Report of the RWI Afghanistan Programme Palwasha Mirbacha Raoul Wallenberg Institute of Human Rights and Humanitarian Law The copyright of Raoul Wallenberg Institute of Human Rights and Humanitarian Law (RWI) Publication design by RWI. Report published September 2025 Authors: Palwasha Mirbacha ISBN: 978-91-90084-07-6 The views and opinion

https://rwi.lu.se/wp-content/uploads/2025/09/Palwasha-Mirbacha-report-2024.pdf - 2026-05-04

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2017 year in review Table of Contents Director’s Statement 2 This is RWI 4 RWI Around the World 6 Cambodia’s First Academic Human Rights Centre in Full Swing 8 Legal Clinics Provide Access to Justice for the Poor and Vulnerable 10 Towards Just, Inclusive and Sustainable Development in Asia 12 Supporting Research in Asia 13 Partnership with East African Court of Justice to Continue in New Regional

https://rwi.lu.se/app/uploads/2018/05/Year-in-Review-2017-2.pdf - 2026-05-04