Peter Biddulph

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  • C Adloff, V Andreev, V Arkadov, A Astvatsatourov, I Ayyaz, A Babaev +321 others
  • 1999
The inclusive single and double differential cross-sections for neutral and charged current processes with four-momentum transfer squared É ¾ between ½½¼ and ¿¼ ¼¼¼ Î ¾ and with Bjorken Ü between ¼¼¼¿¾ and ¼ are measured in · Ô collisions. The data were taken with the H1 detector at HERA between 1994 and 1997, and they correspond to an integrated luminosity(More)
  • Bartel, M Barth, U Bassler, H P Beck, H.-J Behrend, A Belousov +100 others
  • 1996
A new measurement of the proton structure function F 2 (x; Q 2) is reported for momentum transfers squared Q 2 between 1.5 GeV 2 and 5000 GeV 2 and for Bjorken x between 3 10 ?5 and 0:32 using data collected by the HERA experiment H1 in 1994. The data represent an increase in statistics by a factor of ten with respect to the analysis of the 1993 data.(More)
Results on J== production in ep interactions in the H1 experiment at HERA are presented. The J== mesons are produced by almost real photons (Q 2 0) and detected via their leptonic decays. The data have been taken in 1994 and correspond to an integrated luminosity of 2:7 pb ?1. The p cross section for elastic J== production is observed to increase strongly(More)
  • Bartel, M Barth, U Bassler, H P Beck, H.-J Behrend, A Belousov +103 others
  • 2007
A measurement of the proton structure function F 2 (x; Q 2) is reported for momentum transfers squared Q 2 between 4.5 GeV 2 and 1600 GeV 2 and for Bjorken x between 1:810 ?4 and 0:13 using data collected by the HERA experiment H1 in 1993. It is observed that F 2 increases signiicantly with decreasing x, connrming our previous measurement made with one(More)
  • Bartel, M Barth, U Bassler, H P Beck, H.-J Behrend, A Belousov +108 others
  • 2007
Evidence is presented using data taken with the H1 detector at HERA for a class of deep inelastic electron{proton scattering (DIS) events (5 < Q 2 < 120 GeV 2) at low Bjorken-x (10 ?4 < x < 10 ?2) which have almost no hadronic energy ow in a large interval of pseudo-rapidity around the proton remnant direction and which cannot be attributed to our present(More)
We present a study of J== meson production in collisions of 26:7 GeV electrons with 820 GeV protons, performed with the H1-detector at the HERA collider at DESY. The J== mesons are detected via their leptonic decays both to electrons and muons. Requiring exactly two particles in the detector, a cross section of (ep ! J==X) = (8:8 2:0 2:2) nb is determined(More)
  • Bartel, M Barth, U Bassler, H P Beck, H.-J Behrend, A Belousov +106 others
  • 1994
A search in the H1 experiment at HERA for scalar and vector leptoquarks, leptogluons and squarks coupling to rst generation fermions is presented in a data sample corresponding to an integrated luminosity of 425 nb ?1. For masses ranging up to 275 GeV, no signiicant evidence for the direct production of such particles is found in various possible decay(More)
Photoproduction of 2-jet events is studied with the H1 detector at HERA. Parton cross sections are extracted from the data by an unfolding method using leading order parton-jet correlations of a QCD generator. The gluon distribution in the photon is derived in the fractional momentum range 0:04 x 1 at the average factorization scale 75 GeV 2. H1(More)
An analysis is presented of scaling violations of the proton structure function F 2 (x; Q 2) measured with the H1 detector at HERA in the range of Bjorken x values between x = 310 ?4 and 10 ?2 for four-momentum transfers Q 2 larger than 8.7 GeV 2. The structure function F 2 (x; Q 2) is observed to rise linearly with lnQ 2. Under the assumption that the(More)
  • C Adloff, V Andreev, V Arkadov, A Astvatsatourov, I Ayyaz, A Babaev +326 others
  • 1999
The elastic electroproduction of mesons is studied at HERA with the H1 detector for a photon virtuality in the range ½ É ¾ ¼ Î ¾ and for a hadronic centre of mass energy in the range ¿¼ Ï ½½¼ GeV. The shape of the () mass distribution in the resonance region is measured as a function of É ¾. The full set of spin density matrix elements is determined, and(More)