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Measurement of \(F_2^{c\bar{c}}\) and \(F_2^{b\bar{b}}\) at low Q2 and x * using the H1 vertex detector at HERA

  • The H1 Collaboration
Experimental Physics

Abstract.

Measurements are presented of inclusive charm and beauty cross sections in e +p collisions at HERA for values of photon virtuality 12 ≤ Q2 ≤ 60 GeV2 and of the Bjorken scaling variable 0.0002 x ≤ 0.005. The fractions of events containing charm and beauty quarks are determined using a method based on the impact parameter, in the transverse plane, of tracks to the primary vertex, as measured by the H1 vertex detector. Values for the structure functions \(F_2^{c\bar{c}}\) and \(F_2^{b\bar{b}}\) are obtained. This is the first measurement of \(F_2^{b\bar{b}}\) in this kinematic range. The results are found to be compatible with the predictions of perturbative quantum chromodynamics and with previous measurements of \(F_2^{c\bar{c}}\).

Keywords

Field Theory Elementary Particle Quantum Field Theory Structure Function Impact Parameter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer-Verlag Berlin/Heidelberg 2006

Authors and Affiliations

  • The H1 Collaboration

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