Bose enhancement and the ridge

Tolga Altinoluk, Néstor Armesto, Guillaume Beuf, Alex Kovner, Michael Lublinsky
2015 Physics Letters B  
We point out that Bose enhancement in a hadronic wave function generically leads to correlations between produced particles. We show explicitly, by calculating the projectile density matrix in the Color Glass Condensate approach to high-energy hadronic collisions, that the Bose enhancement of gluons in the projectile leads to azimuthal collimation of long range rapidity correlations of the produced particles, the so-called ridge correlations.
doi:10.1016/j.physletb.2015.10.072 fatcat:v3zs4l3qi5asnnovosbgxzt36e