Measurement of the J/psi inclusive production cross-section in pp collisions at sqrt(s)=7TeV with ALICE at the LHC

TL;DR

This paper reports on the measurement of the inclusive J/psi production cross-section in proton-proton collisions at 7 TeV using the ALICE detector at the LHC, covering different rapidity regions and decay channels.

Contribution

It provides the first detailed rapidity and transverse momentum dependence of J/psi production at 7 TeV in pp collisions with ALICE.

Findings

Measured J/psi cross-section at mid and forward rapidity.

Presented transverse momentum spectra of J/psi.

Analyzed rapidity dependence of J/psi production.

Abstract

ALICE measures the J/psi production at mid-rapidity (|y| < 0.9) in the di-electron decay channel as well as at forward rapidity (2.5 < y < 4.0) in the di-muon decay channel. In both channels the acceptance goes down to zero transverse momentum. We present the rapidity dependence of the inclusive J/psi production cross-section and transverse momentum spectra.