van Eldik C (2006)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2006
Publisher: Elsevier
Book Volume: 638
Pages Range: 13-21
Journal Issue: 1
DOI: 10.1016/j.physletb.2006.04.042
The cross section ratio R = Br (Υ{hooked} → l l ) ṡ d σ (Υ{hooked}) / d y | / σ (J / ψ) has been measured with the HERA-B spectrometer in fixed-target proton-nucleus collisions at 920 GeV proton beam energy corresponding to a proton-nucleon c.m.s. energy of sqrt(s) = 41.6 GeV. The combined results for the decay channels Υ{hooked} → e e and Υ{hooked} → μ μ yield a ratio R = (9.0 ± 2.1) × 10 . The corresponding Υ{hooked} production cross section per nucleon at mid-rapidity (y = 0) has been determined to be Br (Υ{hooked} → l l ) ṡ d σ (Υ{hooked}) / d y | = 4.5 ± 1.1 pb / nucleon. © 2006 Elsevier B.V. All rights reserved.
APA:
van Eldik, C. (2006). Measurement of the Υ{hooked} production cross section in 920 GeV fixed-target proton-nucleus collisions. Physics Letters B, 638(1), 13-21. https://doi.org/10.1016/j.physletb.2006.04.042
MLA:
van Eldik, Christopher. "Measurement of the Υ{hooked} production cross section in 920 GeV fixed-target proton-nucleus collisions." Physics Letters B 638.1 (2006): 13-21.
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