Add to ORKGThe proton-nucleon cross section ratio $R=Br(\Upsilon\to l^+l^-) d\sigma(\Upsilon)/dy|_{y=0} / {\sigma(J/\psi)}$ 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 cms energy of sqrt{s}=41.6 GeV. The combined results for the Upsilon decay channels Upsilon $\to e^+e^-$ and Upsilon $\to\mu^+\mu^-$ yield a ratio $R=(9.0 \pm 2.1) 10^{-6}$. The corresponding Upsilon production cross section per nucleon at mid-rapidity (y=0) has been determined to be $Br(\Upsilon\to{}l^+l^-) {d\sigma(\Upsilon)/dy}|_{y=0}= 4.5 \pm 1.1 $ pb/nucleon
The production of Upsilon(1S), Upsilon(2S) and Upsilon(3S) mesons decaying into the dimuon final sta...
Using the HERA – B detector, the $b\overline{b}$ production cross section has been measured in 920 ...
The production cross-sections of $\Upsilon(1S)$, $\Upsilon(2S)$ and $\Upsilon(3S)$ mesons in proton-...
The proton-nucleon cross section ratio $R=Br(\Upsilon\to l^+l^-) d\sigma(\Upsilon)/dy|_{y=0} / {\sig...
The proton-nucleon cross section ratio $R=Br(\Upsilon\to l^+l^-) d\sigma(\Upsilon)/dy|_{y=0} / {\sig...
The cross section ratio RJ/ψ=Br(Υ→l+l−)dσ(Υ)/dy|y=0/σ(J/ψ) has been measured with the HERA-B spectro...
A measurement of the cross section for &Upsilon(1S) production in proton-proton collisions at ce...
We report a high statistics measurement of Upsilon production with an 800 GeV/c proton beam on hydro...
The production cross-sections of Upsilon(1S), Upsilon(2S) and Upsilon(3S) mesons in proton-proton co...
The Upsilon production cross section in proton-proton collisions at sqrt(s) = 7 TeV is measured usin...
The Upsilon production cross section in proton-proton collisions at $\sqrt{s}$ = 7 TeV is measured u...
The $\Upsilon$ production cross section is measured using $280\pm 31 ~{\rm nb}^{-1} $ of proton-prot...
The Upsilon production cross section in proton-proton collisions at sqrt(s) = 7 TeV is measured usin...
The production of Upsilon(1S), Upsilon(2S) and Upsilon(3S) mesons decaying into the dimuon final sta...
Using the HERA – B detector, the $b\overline{b}$ production cross section has been measured in 920 ...
The production cross-sections of $\Upsilon(1S)$, $\Upsilon(2S)$ and $\Upsilon(3S)$ mesons in proton-...
The proton-nucleon cross section ratio $R=Br(\Upsilon\to l^+l^-) d\sigma(\Upsilon)/dy|_{y=0} / {\sig...
The proton-nucleon cross section ratio $R=Br(\Upsilon\to l^+l^-) d\sigma(\Upsilon)/dy|_{y=0} / {\sig...
The cross section ratio RJ/ψ=Br(Υ→l+l−)dσ(Υ)/dy|y=0/σ(J/ψ) has been measured with the HERA-B spectro...
A measurement of the cross section for &Upsilon(1S) production in proton-proton collisions at ce...
We report a high statistics measurement of Upsilon production with an 800 GeV/c proton beam on hydro...
The production cross-sections of Upsilon(1S), Upsilon(2S) and Upsilon(3S) mesons in proton-proton co...
The Upsilon production cross section in proton-proton collisions at sqrt(s) = 7 TeV is measured usin...
The Upsilon production cross section in proton-proton collisions at $\sqrt{s}$ = 7 TeV is measured u...
The $\Upsilon$ production cross section is measured using $280\pm 31 ~{\rm nb}^{-1} $ of proton-prot...
The Upsilon production cross section in proton-proton collisions at sqrt(s) = 7 TeV is measured usin...
The production of Upsilon(1S), Upsilon(2S) and Upsilon(3S) mesons decaying into the dimuon final sta...
Using the HERA – B detector, the $b\overline{b}$ production cross section has been measured in 920 ...
The production cross-sections of $\Upsilon(1S)$, $\Upsilon(2S)$ and $\Upsilon(3S)$ mesons in proton-...