Abstract
The b over(b, ̄) production cross section in 920 GeV proton-nucleus fixed target collisions is measured by observing double muonic decays of b-flavoured hadrons in the kinematic region - 0.3 < xF (μ) < 0.15. A total number of 83 ± 12 b over(b, ̄) events is obtained with a likelihood fit of the signal and background simulated events to the data. The resulting cross section is σb over(b, ̄) = 17.5 ± 2.6stat ± 3.3sys nb / nucleon, or, when combined with a previous HERA-B measurement of similar precision, σb over(b, ̄) = 15.8 ± 1.7stat ± 1.3sysuncorr ± 2.0syscorr nb / nucleon, which is consistent with recent NLO calculations. © 2007.
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CITATION STYLE
Abt, I., Adams, M., Agari, M., Albrecht, H., Aleksandrov, A., Amaral, V., … Zoccoli, A. (2007). Bottom production cross section from double muonic decays of b-flavoured hadrons in 920 GeV proton-nucleus collisions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 650(2–3), 103–110. https://doi.org/10.1016/j.physletb.2007.04.022
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