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Measurement of the \(b\overline{b}\) production cross section in 920 GeV fixed-target proton-nucleus collisions

  • The HERA - B Collaboration
  • I. Abt et al.
Experimental Physics

Abstract.

Using the HERA - B detector, the \(b\overline{b}\) production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The \(b\overline{b}\) production was tagged via inclusive bottom quark decays into \(J/\psi\) by exploiting the longitudinal separation of \(J/\psi\to l^+l^-\) decay vertices from the primary proton-nucleus interaction. Both e + e - and \(\mu^+\mu^-\) channels have been reconstructed and the combined analysis yields the cross section \(\sigma(b\overline{b}) = 32 ^{+14} _{-12} (stat) ^{+6} _{-7} (sys) nb/nucleon\).

Keywords

Titanium Production Cross Combine Analysis Production Cross Section Bottom Quark 
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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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2002

Authors and Affiliations

  • The HERA - B Collaboration
  • I. Abt et al.
    • 1
  1. 1.Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, 80805 München, Germany DE

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