Jul 20 – 27, 2011
Alpes Congrès - Alpexpo
Europe/Paris timezone

Measurement of the Energy Dependence of the Total Photon-Proton Cross Section at HERA

Not scheduled
Dauphine (Alpes Congrès - Alpexpo)


Alpes Congrès - Alpexpo

Poster QCD


Mr Aharon Levy


The energy dependence of the photon-proton total cross section, sigma_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_tot from a single experiment at high W. Parameterizing sigma_tot ~ W2^2epsilon, epsilon = 0.111±0.009(stat.)±0.036(syst.) was obtained.

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