Production of quarkonium states at the ATLAS experiment

11th International Conference on Hyperons, Charm and Beauty Hadrons

Kartvelishvili, V.^1,1

Department of Physics, Lancaster University, LA1 4YB, United Kingdom^1

关键词: ATLAS detectors;    ATLAS experiment;    Differential spectra;    Measurements of;    Pp collisions;    Production cross section;    Radiative decay;    Transverse momenta;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/556/1/012011/pdf
DOI  :  10.1088/1742-6596/556/1/012011

来源: IOP

【 摘 要 】

An overview is given of recent measurements of the production of various heavy quarkonium states in pp collisions at √s= 7 TeV, using the ATLAS detector at the LHC. These include the production cross sections of the C-even states χc1and χc2in their radiative decay modes into J/ψγ, and of the radially excited vector state ψ(2S) in its decay mode into J/ψπ+π-. Differential spectra in transverse momentum are measured separately for promptly produced charmonium states, originating from QCD sources, and for non-prompt states from the decays of B-hadrons. Results are compared to other existing measurements and various theoretical models.