학술논문

Charmonium and e+e- pair photoproduction at mid-rapidity in ultra-peripheral Pb-Pb collisions at [Formula: see text].
Document Type
article
Source
The European physical journal. C, Particles and fields. 73(11)
Subject
ALICE Collaboration
Nuclear & Particles Physics
Quantum Physics
Atomic
Molecular
Nuclear
Particle and Plasma Physics
Atomic
Molecular
Nuclear
Particle and Plasma Physics
Language
Abstract
The ALICE Collaboration at the LHC has measured the J/ψ and ψ' photoproduction at mid-rapidity in ultra-peripheral Pb-Pb collisions at [Formula: see text]. The charmonium is identified via its leptonic decay for events where the hadronic activity is required to be minimal. The analysis is based on an event sample corresponding to an integrated luminosity of about 23 μb-1. The cross section for coherent and incoherent J/ψ production in the rapidity interval -0.9