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Apr 13 – 16, 2021
US/Eastern timezone

Accessing the gluon content of protons and nuclei in ultra peripheral collisions

Apr 16, 2021, 1:50 PM
20m
Oral Presentation Ultra-Peripheral Collisions

Speaker

Bjoern Schenke (Brookhaven National Lab)

Description

Diffractive vector meson production in ultra-peripheral p+A and A+A collisions provides insight into the gluon distribution and its fluctuations in protons and heavier nuclei. I will present calculations of coherent and incoherent differential J/Psi cross sections within a dipole model and the Color Glass Condensate effective theory. We compute the energy/rapidity dependence of the fluctuating gluon distributions using small x evolution equations, which leads to clear predictions for the ratio of the coherent to incoherent cross sections. We further present results for J/Psi production in ultra-peripheral d+Au collisions and compare to experimental data from the STAR collaboration.

Primary authors

Bjoern Schenke (Brookhaven National Lab) Heikki Mäntysaari (Brookhaven National Laboratory)

Presentation materials