Abstract. Recent deep inelastic results from the H1 collaboration are presented. The topics covered include inclusive diffractive physics, the determination of αS using the event shapes, the study of the hadronic final state at low x with single particles and with jets, the structure function

Properties of the hadronic nal state in photoproduction events with large trans-verse energy are studied at the electron-proton collider HERA. Distributions of the transverse energy, jets and underlying event energy are compared to pp data and QCD calculations. The comparisons show that the γp events can be consistently described by QCD models including { in addition to the primary hard scattering process { interactions between the two beam remnants. The dierential jet cross sections d=dEjetT and d=d

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The jet calibration of the Liquid-Argon-Calorimeter of the H1 Detector at HERA is described. In the measurement of high jet transverse energies systematic uncertainties as low as 2 % can be reached in deep inelastic scattering with a high photon virtuality (Q 2) and in photoproduction. Furthermore

Abstract Three- and four-jet production is measured in deep-inelastic ep scattering at low x and Q2with the H1 detector using an integrated luminosity of 44.2 pb-1. Several phase spaceregions are selected for the three-jet analysis in order to study the underlying parton dynamics from global

A search for excited neutrinos produced in electron–proton collisions is performed using a data sample corresponding to an integrated luminosity of 114 pb −1 recently collected by the H1 detector at HERA. In absence of a signal, the measurement is interpreted within a minimal model parameterised

Searches for excited electrons and neutrinos have been performed using the complete HERA I and II data samples collected by the H1 detector at √ s = 320 GeV corresponding to an integrated luminosity of up to 435 pb −1. In absence of a signal, the limits on the ratio of the coupling

Inclusive ep double differential cross sections for neutral current deep-inelastic scattering are measured with the H1 detector at HERA. The data were taken with a lepton beam energy of 27.6 GeV and two proton beam energies of Ep = 460 and 575 GeV corresponding to centre-of-mass energies of 225

Data collected by the H1 detector in the years 1994 to 1997 have been used to search for a signal of diffractively produced \Upsilon (\Upsilon(1S ), \Upsilon(2S ), \Upsilon(3S )) decaying into two muons. The cross section for exclusive photoproduction at an average photon proton centre

are measured in the visible range dened by jη(D)j< 1:5 and pt(D)> 1:5GeV. The data were collected by the H1 experiment during the period from 2004 to 2007 and correspond to an inte-grated luminosity of 351pb1. The charm contribution, F cc̄2, to the proton structure function F2 is determined