Measurement Of The Cross Section Ratio Chi-c2/chi-c1 For Prompt Chi-c Production With Cms Experiment
| Autor: | Akin, Ilina V. |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Ph.D. Thesis |
| Popis: | The prompt production of &chi c quarkonia is studied in proton-proton collisions at 7 TeV, using data collected by CMS in 2011 corresponding to an integrated luminosity of 4.6 fb &minus 1. The &chi c mesons are reconstructed through their radiative decays to J/&psi and photon with J/&psi rarr mu minus The photons are reconstructed through their conversion in electron-positron pairs in the tracking detector which gives a mass resolution sufficient for resolving these states. The ratio of the prompt production cross sections for the &chi c1 and &chi c2 states, &sigma (&chi c2)/&sigma c1), has been determined as a function of the J/&psi transverse momentum between 7 and 25 GeV/c. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
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