Measurement of D ⁎± , D ± and D s ± meson production cross sections in pp collisions at √s=7 TeV with the ATLAS detector
The production of D ⁎± , D ± and D s ± 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 −1 . The charmed mesons have been reconstructed in the range of transverse momentum 3.5<p T (D...
Guardado en:
| Publicado: |
2016
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05503213_v907_n_p717_Aad http://hdl.handle.net/20.500.12110/paper_05503213_v907_n_p717_Aad |
| Aporte de: |
| Sumario: | The production of D ⁎± , D ± and D s ± 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 −1 . The charmed mesons have been reconstructed in the range of transverse momentum 3.5<p T (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 ⁎± and D ± 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. © 2016 The Authors |
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