Measurement of D*<sup>±</sup>, D<sup>±</sup> and D<sup>±</sup><sub>s</sub> meson production cross sections in pp collisions at √s = 7 TeV with the ATLAS detector
The production of D*<sup>±</sup>, D<sup>±</sup> and D<sup>±</sup><sub>s</sub> charmed mesons has been measured with the ATLAS detector in pp collisions at √s = 7 TeV at the LHC, using data corresponding to an integrated luminosity of 280 nb<sup>-...
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| Autores principales: | , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2016
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/87031 |
| Aporte de: |
| Sumario: | The production of D*<sup>±</sup>, D<sup>±</sup> and D<sup>±</sup><sub>s</sub> charmed mesons has been measured with the ATLAS detector in pp collisions at √s = 7 TeV at the LHC, using data corresponding to an integrated luminosity of 280 nb<sup>-1</sup>. The charmed mesons have been reconstructed in the range of transverse momentum 3.5 < p<sub>T</sub>(D) < 100 GeV and pseudorapidity |η(D)|<2.1. The differential cross sections as a function of transverse momentum and pseudorapidity were measured for D*<sup>±</sup> and D<sup>±</sup> production. The next-to-leading-order QCD predictions are consistent with the data in the visible kinematic region within the large theoretical uncertainties. Using the visible D cross sections and an extrapolation to the full kinematic phase space, the strangeness-suppression factor in charm fragmentation, the fraction of charged non-strange D mesons produced in a vector state, and the total cross section of charm production at √s = 7 TeV were derived. |
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