research
Measurement of the relative rate of prompt χ c0, χ c1 and χ c2 production at TeV
Abstract
Prompt production of charmonium χ c0, χ c1 and χ c2 mesons is studied using proton-proton collisions at the LHC at a centre-of-mass energy of TeX TeV. The χ c mesons are identified through their decay to J/ψγ, with J/ψ → μ + μ − using photons that converted in the detector. A data sample, corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb detector, is used to measure the relative prompt production rate of χ c1 and χ c2 in the rapidity range 2.0 < y < 4.5 as a function of the J/ψ transverse momentum from 3 to 20 GeV/c. First evidence for χ c0 meson production at a high-energy hadron collider is also presented- info:eu-repo/semantics/article
- info:eu-repo/semantics/publishedVersion
- Hadrons
- Quarks
- Interaccions d'hadrons
- Gran Col·lisionador d'Hadrons
- Física nuclear
- Teoria quàntica
- Teoria quàntica de camps
- Hadrons
- Quarks
- Hadron interactions
- Large Hadron Collider (France and Switzerland)
- Nuclear physics
- Quantum theory
- Quantum field theory