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We extend a quantum kinetic approach to the description of hadronic showers in space, time and momentum space to deep-inelastic $ep$ collisions, with particular reference to experiments at HERA. We follow the history of hard scattering…

High Energy Physics - Phenomenology · Physics 2009-09-11 John Ellis , Klaus Geiger , Henryk Kowalski

The size of non-perturbative corrections to high E_T jet production in deep-inelastic scattering is reviewed. Based on predictions from fragmentation models, hadronization corrections for different jet definitions are compared and the model…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Wobisch , T. Wengler

A QCD fit analysis to the combined HERA inclusive deep inelastic cross sections measured by the H1 and ZEUS collaborations for $e^\pm p$ scattering to extract HERAPDF sets is presented. The results are used for predictions of $ p\bar{p}$…

High Energy Physics - Experiment · Physics 2019-08-14 V. Radescu

Recent measurement of inclusive processes and hadronic final states in diffractive deep-inelastic scattering at HERA are used to investigate the QCD factorisation properties and study partonic structure of colour singlet exchange. Resolved…

High Energy Physics - Experiment · Physics 2007-05-23 M. Kapishin

The average charged track multiplicity and the normalised distribution of the scaled momentum, $\xp$, of charged final state hadrons are measured in deep-inelastic $\ep$ scattering at high $Q^2$ in the Breit frame of reference. The analysis…

High Energy Physics - Experiment · Physics 2012-08-27 H1 Collaboration

We present an extension of the multi-purpose Monte-Carlo event generator Sherpa for processes in deeply inelastic lepton-nucleon scattering. Hadronic final states in this kinematical setting are characterised by the presence of multiple…

High Energy Physics - Phenomenology · Physics 2010-11-19 Tancredi Carli , Thomas Gehrmann , Stefan Hoeche

We present a quantitative comparison between two grooming techniques: SoftDrop (SD) and Dynamical Grooming (DyG), in terms of the resilience of their associated observables to the underlying event, hadronization and pileup in proton-proton…

High Energy Physics - Phenomenology · Physics 2020-08-14 Alba Soto-Ontoso

Jet production in charged and neutral current events in the kinematic range of Q^2 from 640 to 35000 GeV^2 is studied in deep-inelastic positron-proton scattering at HERA. The measured rate of multi-jet events and distributions of jet polar…

High Energy Physics - Experiment · Physics 2009-01-07 H1 Collaboration , C. Adloff

Recent results from jet production in deep inelastic ep scattering to investigate parton dynamics at low x are reviewed. The results on jet production in deep inelastic scattering and photoproduction used to test perturbative QCD are…

High Energy Physics - Experiment · Physics 2014-11-17 C. Glasman

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 HERA. A subsample of events with an additional…

High Energy Physics - Experiment · Physics 2015-06-03 H1 Collaboration

The QCD analysis of deep inelastic diffractive scattering at HERA is performed assuming the dominance of the "soft" pomeron exchange and simple, physically motivated parametrization of parton distributions in the pomeron. Both the LO and…

High Energy Physics - Phenomenology · Physics 2016-09-01 K. Golec--Biernat , J. Kwieciński

Characteristics of the hadronic final state of diffractive deep inelastic scattering events, ep -> eXp, were studied in the kinematic range 4 < M_X < 35 GeV, 4 < Q^2 < 150 GeV^2, 70 < W < 250 GeV and 0.0003 < x_pom < 0.03 with the ZEUS…

High Energy Physics - Experiment · Physics 2012-08-27 The ZEUS Collaboration

The distribution of the azimuthal angle of charged and neutral hadrons relative to the lepton plane has been studied for neutral current deep inelastic $ep$ scattering using an integrated luminosity of 45 pb-1 taken with the ZEUS detector…

High Energy Physics - Experiment · Physics 2012-08-27 ZEUS Collaboration

The working group on jets and high-Et phenomena of the Future physics at HERA Workshop studied subjects ranging from next-to-leading order (NLO) corrections in deeply inelastic scattering (DIS) and photoproduction with the corresponding…

High Energy Physics - Phenomenology · Physics 2007-05-23 Martin Erdmann , Dirk Graudenz , Leif Lonnblad , Katsuo Tokushuku

Recent measurements of inclusive and semi-inclusive deep inelastic scattering in electron-proton collisions at HERA are reviewed. These measurements are used to determine the parton distribution functions (PDFs) of the proton, a necessary…

High Energy Physics - Experiment · Physics 2019-08-14 K. Lipka

The QCD analysis of deep inelastic diffractive scattering is performed assuming the dominance of the "soft" pomeron exchange and simple, physically motivated parametrization of parton distributions in a pomeron. Results of the analysis are…

High Energy Physics - Phenomenology · Physics 2008-11-26 K. Golec-Biernat , J. Kwiecinski

An investigation of the hadronic final state in diffractive and non--diffractive deep--inelastic electron--proton scattering at HERA is presented, where diffractive data are selected experimentally by demanding a large gap in pseudo…

High Energy Physics - Experiment · Physics 2008-11-26 S. Aid

The study of the inelastic scattering of hadrons has progressed in the last decade. With the availability of high-statistics data sets from HERA and the Tevatron, our understanding of high energy and high jet multiplicity events has become…

High Energy Physics - Experiment · Physics 2009-11-04 Don Lincoln

We present a parton-shower matched NNLO QCD calculation for hadronic final state production in Deep Inelastic Scattering. The computation is based on the UNLOPS method and is implemented in the publicly available event generation framework…

High Energy Physics - Phenomenology · Physics 2018-12-19 Stefan Höche , Silvan Kuttimalai , Ye Li

We investigate possible search strategies for QCD-instanton induced processes at HERA in the deep-inelastic scattering (DIS) regime. Our study is based on the Monte Carlo generator QCDINS for instanton-induced events and the standard…

High Energy Physics - Phenomenology · Physics 2007-05-23 T. Carli , J. Gerigk , A. Ringwald , F. Schrempp