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Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 70: QCD (Experiment)

T 70.2: Vortrag

Mittwoch, 27. März 2019, 16:15–16:30, H10

Measurements of the total charm cross section with the CMS detector — •Nur Zulaiha Jomhari and Achim Geiser — DESY, Hamburg, Germany

The main objective of this project is to measure the total cross section
for inclusive charm production at different proton-proton center of mass energies (0.9, 2.7, 5, 7, 8, and 13 TeV). The measurement of charmed meson production is one of the ways to verify the corresponding Standard Model prediction. In previous LHC analyses, the CMS, ATLAS and ALICE experiments covered only small fractions of the available phase space while the LHCb experiment fully covered the forward region, 0 < pT < 15 GeV and 2.0 < y < 4.5.

For this project, we measure the charm cross section through the decays D*D0πs and D0Kπ+ in the full rapidity range not covered by LHCb and down to pT ∼1 GeV. The challenge is the acceptance of the D mesons at this low pT. Combining with the LHCb measurements, essentially the full phase space will be covered. In this talk, the ongoing analysis on this project will be presented.

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