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HERA has provided a wealth of high precision structure function and jet production data, allowing considerable progress to be made in understanding the structure of the proton. In this paper, several of the most recent proton structure…

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

The first measurements of the diffractive structure function $F_2^{D(3)}$ at HERA are discussed. A factorisable interpretation in which a partonic structure is assigned to the pomeron is investigated through QCD analyses in which both the…

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

The H1 and Zeus collaborations have measured the inclusive diffractive DIS cross section ep -> eXp and these measurements are in good agreement within a normalisation uncertainty. Diffractive parton density functions (DPDFs) have been…

High Energy Physics - Experiment · Physics 2008-10-16 Paul Laycock

Recent results from the HERA ep collider are reviewed in these proceedings. The results are from measurements that probe QCD at high-energy scales, as defined by $Q^2$, the four-momentum-transfer squared of the collisions. These…

High Energy Physics - Experiment · Physics 2009-11-05 J. Ferrando

A great interest for diffraction has been generated these last years by the HERA data. They give us the first opportunity to understand high energy diffractive physics in terms of a fundamental theory, i.e. QCD. A review of the main results…

High Energy Physics - Phenomenology · Physics 2017-08-23 L. Favart

Precision measurements of diffraction have been performed by the H1 and ZEUS experiments at the HERA collider with high statistics for a wide kinematic range of photon virtuality $Q^2$. The diffractive parton densities are extracted by…

High Energy Physics - Experiment · Physics 2008-06-02 Heuijin Lim

The kinematic region covered by the LHC experiments probes low values of Bjorken-$x$. At the scale relevant for $W$ and $Z$ production the central rapidity region covers $10^{-3} < x < 10^{-1}$. This means that it is the HERA data which…

High Energy Physics - Phenomenology · Physics 2015-03-17 Amanda Cooper-Sarkar

Recent results on structure functions and parton distribution functions at HERA are presented. Results on the measurements of the structure functions F2, FL and F3 will be covered, as well as the results of the most recent QCD fits to…

High Energy Physics - Experiment · Physics 2007-05-23 C. Targett-Adams

The results of measurement of beauty quark production at HERA performed by the H1 and ZEUS collaborations are presented. Total cross sections and the differential cross sections have been measured in both the photoproduction and the deep…

High Energy Physics - Phenomenology · Physics 2019-08-14 Katarzyna Helena Klimek

The high precision and large kinematic coverage of the data from the HERA-I running period (1994-2000) have already allowed precise extractions of proton parton distribution functions. The HERA-II running program is now underway and is…

High Energy Physics - Phenomenology · Physics 2009-11-11 C. Gwenlan , A. Cooper-Sarkar , C. Targett-Adams

The $e^{+}p$ and $e^{-}p$ scattering data recorded at HERA during the recent years offer the possibility to study electroweak effects in $ep$ interactions apparent at high momentum transfers, $Q^{2}$, and to reveal information on the proton…

High Energy Physics - Experiment · Physics 2007-05-23 Hans-Christian Schultz-Coulon

An overview over the recent heavy flavour results of the H1 and ZEUS collaborations is presented. Various techniques to tag the heavy quark, which allow to explore different phase space regions, are employed. Predictions of pertubative QCD…

High Energy Physics - Experiment · Physics 2009-06-09 Klaus Urban

The status is reviewed of recent high precision measurements of inclusive-jet, dijet and trijet production in deep-inelastic scattering and photoproduction by the HERA experiments H1 and ZEUS. The measurements are in good agreement with…

High Energy Physics - Experiment · Physics 2015-06-03 Roman Kogler

Several topics from the wide field of QCD studies in Deep-inelastic $ep$ Scattering at HERA are addressed. They include QCD analyses of the inclusive cross section with the determination of $\alpha_s$ and the proton gluon density from the…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. Olsson

A review of HERA measurements of structure functions, fragmentation functions and forward jet production is presented.

High Energy Physics - Experiment · Physics 2014-11-17 N. H. Brook

The extraction of the parameters of perturbative QCD is one of the main tasks for the HERA experiments. Studies on the structure of the hadronic final states with jet algorithms give a direct handle on the parton density functions and the…

High Energy Physics - Experiment · Physics 2007-05-23 T. Hadig

New structure function results from H1 are presented. The measurements cover a huge kinematical range for Q^2, the four momentum transfer squared, from 0.35, GeV^2 to 30,000, GeV^2, and for Bjorken x between \sim 5\cdot 10^{-6} and 0.65. At…

High Energy Physics - Experiment · Physics 2009-11-07 Zhiqing Zhang

Results on QCD studies from the H1 and ZEUS Collaborations at the ep collider HERA are presented and their impact on LHC physics discussed.

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

Neutral and charged current deep inelastic scattering cross sections and structure functions are presented. The review also discusses improvements to the parton density measurements using jet cross section data and recent high $Q^{2}$…

High Energy Physics - Experiment · Physics 2019-08-14 Syed Umer Noor

Highlights from the ZEUS experiment at HERA as of the DIS06 conference in April are shown. New results focus on measurements from the HERA II running period of inclusive DIS at high momentum transfer using polarised leptons and on their…

High Energy Physics - Experiment · Physics 2017-08-23 M. Wing