Search results

Inclusive jet production is studied in neutral current deep-inelastic positron-proton scattering at large four momentum transfer squared Q(2) > 150 GeV2 with the H1 detector at HERA. Single and double differential inclusive jet cross sections are measured as a function of Q(2) and of the transverse energy E-T of the jets in the Breit frame. The measurements are found to be well described by calcul

The diffractive photoproduction of rho mesons, ep -> e rho Y, with large momentum transfer squared at the proton vertex, vertical bar t vertical bar, is studied with the H1 detector at HERA using an integrated luminosity of 20.1 pb(-1). The photon-proton centre of mass energy spans the range 75 < W < 95 GeV, the photon virtuality is restricted to Q(2) < 0.01 GeV2 and the mass My of the proton remn

A detailed analysis is presented of the diffractive deep-inelastic scattering process ep -> eXY, where Y is a proton or a low mass proton excitation carrying a fraction 1 - x(IP) > 0.95 of the incident proton longitudinal momentum and the squared four-momentum transfer at the proton vertex satisfies |t| < 1 GeV2. Using data taken by the H1 experiment, the cross section is measured for photon virtu

Measurements are presented of differential dijet cross sections in diffractive photoproduction (Q(2) < 0.01 GeV2) and deep-inelastic scattering processes (DIS, 4 < Q2 < 80 GeV2). The event topology is given by ep -> eXY, in which the system X, containing at least two jets, is separated from a leading low-mass baryonic system Y by a large rapidity gap. The dijet cross sections are compared with NLO

Data taken with positrons of different longitudinal polarisation states in collision with unpolarised protons at HERA are used to measure the total cross sections of the charged current process, e(+) p -> nu X, for negative four-momentum transfer squared Q(2) > 400 GeV2 and inelasticity gamma < 0.9. Together with the corresponding cross section obtained from the previously published unpolarised da

A search for scalar and vector leptoquarks coupling to first generation fermions is performed using the e(+) p and e(-) p scattering data collected by the H1 experiment between 1994 and 2000. The data correspond to a total integrated luminosity of 117 pb(-1). No evidence for the direct or indirect production of such particles is found in data samples with a large transverse momentum final state el

The production of forward jets has been measured in deep inelastic ep collisions at HERA. The results are presented in terms of single differential cross sections as a function of the Bjorken scaling variable (xB(j)) and as triple differential cross sections d3 sigma/dx(Bj)dQ(2)dp(t)(,jet)(2), where Q(2) is the four momentum transfer squared and p(t)(,iet)(2) is the squared transverse momentum of

Processes leading to a final state with at least two high transverse momentum leptons (electrons or muons) are studied using the full e(+/-) p data sample collected by the H1 experiment at HERA. The data correspond to an integrated luminosity of 463 pb(-1). Di-lepton and tri-lepton event classes are investigated. Cross sections of the production of e(+)e(-) and mu(+)mu(-) pairs are derived in a re

The production of neutral strange hadrons is investigated using deep-inelastic scattering events measured with the H1 detector at HERA. The measurements are made in the phase space defined by the negative four-momentum transfer squared of the photon 2 < Q(2) < 100 GeV2 and the inelasticity 0.1 < y < 0.6. The K-s(0) s and Lambda((Lambda) over bar) production cross sections and their ratios are dete

Deep-inelastic ep scattering data taken with the H1 detector at HERA and corresponding to an integrated luminosity of 106 pb(-1) are used to study the differential distributions of event shape variables. These include thrust, jet broadening, jet mass and the C-parameter. The four-momentum transfer Q is taken to be the relevant energy scale and ranges between 14 GeV and 200 GeV. The event shape dis

A search for the single production of doubly-charged Higgs bosons H-+/-+/- in ep collisions is presented. The signal is searched for via the Higgs decays into a high mass pair of same charge leptons, one of them being an electron. The analysis uses up to 118 pb(-1) of ep data collected by the H1 experiment at HERA. No evidence for doubly-charged Higgs production is observed and mass dependent uppe

A search for excited electrons is performed using the full e(+/-) p data sample collected by the HI experiment at HERA, corresponding to a total luminosity of 475 pb(-1). The electroweak decays of excited electrons e* -> e gamma, e* -> eZ and e* -> vW with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited electron production is found. Mass depende

A first measurement is reported of the longitudinal proton structure function FL(X, Q(2)) at the ep collider HERA. It is based on inclusive deep inelastic e(+)p scattering cross section measurements with a positron beam energy of 27.5 GeV and proton beam energies of 920, 575 and 460 GeV. Employing the energy dependence of the cross section, FL is measured in a range of squared four-momentum transf

Three- and four-jet production is measured in deep-inelastic ep scattering at low x and Q(2) with the H1 detector using an integrated luminosity of 44.2 pb(-1). Several phase space regions are selected for the three-jet analysis in order to study the underlying parton dynamics from global topologies to the more restrictive regions of forward jets close to the proton direction. The measurements of

The process of charm quark fragmentation is studied using D (* +/-) meson production in deep-inelastic scattering as measured by the H1 detector at HERA. The parameters of fragmentation functions are extracted for QCD models based on leading order matrix elements and DGLAP or CCFM evolution of partons together with string fragmentation and particle decays. Additionally, they are determined for a n

Microsoft Word - Fredric Wirbrand.docx               TORSHAMMAREN Hur ska smycket tolkas? Fredric Wirbrand 2013-05-13 B-uppsats i arkeologi ARKA12 Institutionen för arkeologi och antikens historia. Lunds Universitet 1     Abstract The Thor’s hammer. How should it be interpreted? Author: Fredric Wirbrand. This thesis discusses the Thor’s hammer pendant and how it should be interpreted. The classica

https://www.ark.lu.se/media/utbildning/dokument/kurser/ARKA12/20131/Fredric_Wirbrand.pdf - 2026-05-26

Måldokument 2025-09-23 Dnr. 2026:2816 Postadress: 106 20 Stockholm Besöksadress: Fleminggatan 14 Telefon: 08-527 332 00 vx Fax: 08-24 44 20 skolverket@skolverket.se www.skolverket.se Skolverket har i uppdrag av regeringen att formulera mål för den statliga befattnings- utbildningen för rektorer enligt förordningen (2011:183) om befattningsutbildning och fortbildning för rektorer och annan personal

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Justifying Rational Planning: on the indeterminacy of pragmatic considerations Justifying Rational Choice: the role of success* Bruno Verbeek Leiden University, Netherlands §1 Introduction The theory of rational choice can be interpreted in several ways. One can regard the theory as a representing the choices of agents. The theory is interpreted as an empirical hypothesis for further research. Alt

https://www.fil.lu.se/hommageawlodek/site/papper/VerbeekBruno.pdf - 2026-05-26

LTHs 9:e Pedagogiska Inspirationskonferens, 15 december 2016 Utan män vågar kvinnor prova – lärdomar av genusseparerad programmeringsundervisning. Sandra Nilsson, Adjunkt, Datavetenskap LTH och Björn Regnell, Professor, Datavetenskap LTH. Sammanfattning—D-programmet på LTH har en låg andel kvinnliga sökande, samtidigt som intresset för att lära sig programmera bland kvinnor tycks öka. De

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nyhetsbrev_juni.pub Nummer 3- 2011 Omställningsarbetet snart klart Lönerörelsen—kommer den igång? TJ samarbete med Attendance 2 Juni 2014 S id an t vå Omställningen—börjar den bli klar? Av Per Hammarqvist Per Hammarqvist Så börjar omställningsarbetet inom administrationen vara över för den här gången. Det finns några få ärenden som berör våra medlemmar som ännu inte är klara. Det har varit en tung

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