Stereoselective analysis of metoprolol and its metabolites in rat plasma with application to oxidative metabolism

Additional corrections to the Gross–Llewellyn Smith sum rule

“…(27) we have increased the integral of this distribution by 20%; this represents the approximate increase in this moment in evolving from Q 2 ¼ 16 GeV 2 to the value Q 2 ¼ 8 GeV 2 appropriate for our evaluation of the GLS sum rule. This increase is comparable to results obtained by the NNPDF group [31], who performed DGLAP evolution on the second moment of strange quark distributions to extrapolate in Q 2 .…”

“…(15) to have the same sign. As we shall see, all of the latest analyses of strange quark distributions [29][30][31][32][33] find that the quantity s À ðxÞ is positive for sufficiently large x. Analyses of parton valence charge symmetry violating effects for parton distributions [7] obtain a quantity d À ðxÞ À u À ðxÞ > 0 for x !…”

“…Their best fits to xs À ðxÞ found crossovers in the vicinity x 0 $ 0:01-0:02. The NNPDF Collaboration [31] used only the NuTeV data and not the CCFR results. They report a value S À ¼ 0:0005 AE 0:0086 at Q 2 ¼ 20 GeV 2 ; the exceptionally large error in the NNPDF value (a factor of 5 to 6 larger than the errors from the other analyses) results in part from their use of a neural network procedure, which does not build in widely accepted constraints on the shape of sea quark distributions.…”

“…Mason et al [29] 0:001 96 AE 0:001 43 0.004 16 CTEQ [30] 0:0018 þ0:0016 À0:0004 0.01-0.02 1.69 NNPDF [31] 0:0005 AE 0:0086 0.13 20 MSTW [32] 0:0016 þ0:0011 À0:0009 0.016 1.0 Alekhin et al [33] 0:0013 AE 0:0009 AE 0:0002 0:02 8…”

Measurements of the top quark branching ratios into channels with leptons and quarks with the ATLAS detector

“…An event-by-event weighting is applied to a default MC@NLO sample that uses the central value of CT10 [28]. MSTW2008 [46] and NNPDF2.0 [47,48] sets are taken to estimate the systematic uncertainty due to the PDF. The uncertainty due to ISR/FSR is evaluated using the ALPGEN generator interfaced to the PYTHIA shower model, and by varying the parameters controlling ISR and FSR in a range consistent with experimental data [49].…”