The phrase "above the expected background" is correct and usable in written English.
It can be used in contexts where you are discussing data, results, or observations that exceed what is typically anticipated or considered normal.
Example: "The results of the experiment were above the expected background, indicating a significant anomaly."
Alternatives: "beyond the anticipated background" or "greater than the expected background".
For a Higgs boson mass of 125 GeV, an excess of events above the expected background is observed (expected) with a local significance of 1.5 (0.7) standard deviations.
For the samples with nitrate concentration above the expected background level the isotopic ratios did not correspond to any source documented in the literature.
Laboratory isotopic values for RDX-derived NO3− produced a trend of high δ18O-low δ15N to low δ18O-high δ15N, and groundwater samples with nitrate concentrations above the expected background level appeared along this trend.
No excess of events is observed above the expected background and limits on the Higgs boson production times branching ratio to weakly interacting, long-lived particles are derived as a function of the particle proper decay length.
Among their notable findings were that 18 genes were observed to be mutated above the expected background mutation rate, GATA3 mutations were associated with tumor shrinkage with AI treatment, and tumors with high Ki-67 expression demonstrated a higher frequency of somatic mutations and structural variations that were associated with resistance to AI therapy.
Similarly, based on the identification of 16 genes of apparent algal origin in the genomes of Tetrahymena thermophila and Paramecium tetraurelia, ciliates were proposed to have once been photosynthetic (Reyes-Prieto et al. 2008), despite a previous assessment that T. thermophila displayed no signal of plastid descent above the expected background noise (Eisen et al. 2006).
When an unexpected "bump" appeared above what was the expected background, we had a candidate for a new particle.
Just as the background should represent the background rate (counts/pixel), the background error should be the error in the expected background rate in each pixel.
It is very close to the background very close to the expected background signature (Chi-square p = 0.027).
These values are well above expected background levels (1 4 nM) for the open ocean.
Both experiments observe a small but significant excess of events around an invariant mass of about 125 GeV above the expected continuum background, with a spread as expected from the mass resolution and statistical fluctuations corresponding to a local significance of 3.4σ and 3.2σ in ATLAS and CMS, respectively.
