Measurement of the energy dependence of the total photon-proton cross section at HERA

  • H. Abramowicz
  • , I. Abt
  • , L. Adamczykm
  • , M. Adamus
  • , R. Aggarwal
  • , S. Antonelli
  • , P. Antonioli
  • , A. Antonov
  • , M. Arneodo
  • , V. Aushev
  • , Y. Aushev
  • , O. Bachynska
  • , A. Bamberger
  • , A. N. Barakbaev
  • , G. Barbagli
  • , G. Bari
  • , F. Barreiro
  • , D. Bartsch
  • , M. Basile
  • , O. Behnke
  • J. Behr, U. Behrens, L. Bellagamba, A. Bertolin, S. Bhadra, M. Bindi, C. Blohm, V. Bokhonov, T. Bold, E. G. Boos, K. Borras, D. Boscherini, S. K. Boutle, I. Brock, E. Brownson, R. Brugnera, N. Bruemmer, A. Bruni, G. Bruni, B. Brzozowska, P. J. Bussey, J. M. Butterworth, B. Bylsma, A. Caldwell, M. Capua, R. Carlin, C. D. Catterall, S. Chekanov, J. Chwastowski, A. Pellegrino, ZEUS Collaboration

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Abstract

The energy dependence of the photon-proton total cross section, sigma(gamma p)(tot), was determined from e(+) p scattering data collected with the ZEUS detector at HERA at three values of the center-of-mass energy, W, of the gamma p system in the range 194 <W <296 GeV. This is the first determination of the W dependence of sigma(gamma p)(tot) from a single experiment at high W. Parameterizing sigma(gamma p)(tot) alpha W(2 epsilon), epsilon = 0.111 +/- 0.009 (stat.) +/- 0.036 (syst.) was obtained. (c) 2011 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)184-193
Number of pages10
JournalPhysics Letters B
Volume697
Issue number3
DOIs
Publication statusPublished - 7-Mar-2011

Keywords

  • Photoproduction
  • Total cross section
  • Energy dependence
  • OF-MASS ENERGY
  • CENTRAL TRACKING DETECTOR
  • ZEUS BARREL CALORIMETER
  • LOW Q(2)
  • LOW X
  • DESIGN
  • CONSTRUCTION
  • SCATTERING
  • IDENTIFICATION
  • REPRESENTATION

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