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Notes on van der Meer Scan for Absolute Luminosity Measurement

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arxiv 1103.1129 v1 pith:5DPTFDFA submitted 2011-03-06 physics.ins-det hep-ex

classification physics.ins-dethep-ex
keywords luminosityscanabsolutebeammeermeasurementmethodplane
verification ladder T0 review T1 audit T2 compute T3 formal
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An absolute luminosity can be measured in an accelerator by sweeping beams transversely across each other in the so called van der Meer scan. We prove that the method can be applied in the general case of arbitrary beam directions and a separation scan plane. A simple method to develop an image of the beam in its transverse plane from spatial distributions of interaction vertexes is also proposed. From the beam images one can determine their overlap and the absolute luminosity. This provides an alternative way of the luminosity measurement during van der Meer scan.

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  1. Measurement of $\omega$ meson production in pp collisions at $\sqrt{s}$ = 13 TeV

    hep-ex 2024-11 accept novelty 6.0 of 10

    ALICE measured the omega meson production cross section in pp collisions at 13 TeV over pT 1.6 to 50 GeV/c and found the omega/pi0 ratio is constant at 0.578 above 4 GeV/c.

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