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Measurement of the $b\overline{b}$ production cross section in 920 GeV fixed-target proton-nucleus collisions
- Source :
- Abt, I, Bauer, T, Carvalho, J, Hernandez, J R, Lau, K, Liu, Y-J, Sbrizzi, A, Schroder, H, Schwarz, A S, Wagner, W W, Wang, J & Wang, Y 2003, ' Measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions ', European Physical Journal C. Particles and Fields, vol. 26, no. 3, pp. 345-355 . https://doi.org/10.1140/epjc/s2002-01071-8, European Physical Journal C. Particles and Fields, 26(3), 345-355. Springer New York
- Publication Year :
- 2003
- Publisher :
- Springer Science and Business Media LLC, 2003.
-
Abstract
- Using the HERA-B detector, the b-bbar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b-bbar production was tagged via inclusive bottom quark decays into J/psi, by exploiting the longitudinal separation of J/psi->ll 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 $\sigma(b \bar b) = 32 ^{+14}_{-12} (stat) ^{+6}_{-7} (sys) nb/nucleon$.<br />Comment: 22 pages, 10 Postscript figures
- Subjects :
- Physics
Particle physics
Physics and Astronomy (miscellaneous)
Proton
010308 nuclear & particles physics
Nuclear Theory
High Energy Physics::Phenomenology
Sigma
HERA
01 natural sciences
Bottom quark
High Energy Physics - Experiment
Nuclear physics
Cross section (physics)
0103 physical sciences
High Energy Physics::Experiment
Production (computer science)
Nuclear Experiment
010306 general physics
Engineering (miscellaneous)
HERA-B
Bar (unit)
Subjects
Details
- ISSN :
- 14346052 and 14346044
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- The European Physical Journal C
- Accession number :
- edsair.doi.dedup.....3a201c11d8fb82185c21c126e39bd346