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Measurement of F2ccbar and F2bbbar at Low Q2 using the H1 Vertex Detector at HERA |
| Reference |
Preliminary results expected for DIS2005, Spring 2005 |
| Figures |
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| Contact |
T. Klimkovich |
| Abstract |
Measurements are presented of inclusive charm and beauty cross
sections in e^+p collisions at HERA for values of photon
virtuality 3.75 < Q^2 < 60 GeV^2 and of the Bjorken scaling variable
0.000197 < x < 0.005. The fraction of events containing charm and beauty
quarks is 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^ccbar and F_2^bbbar
are obtained. The results are found to be compatible with the predictions
of perturbative quantum chromodynamics and with previous measurements of F_2^ccbar. |
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