5-12 July 2017
Venice, Italy
Europe/Zurich timezone
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Measurements of multi-jet production in ultra-peripheral lead-lead collisions with the ATLAS detector

7 Jul 2017, 12:45
15m
Room Mangano (Palazzo del Casinò)

Room Mangano

Palazzo del Casinò

Parallel Talk Heavy Ion Physics Heavy ion physics

Speaker

Brian Cole (Columbia University (US))

Description

Beams of relativistic heavy ions accompanied by a large flux of equivalent photons, and photon-induced reactions are the dominant interaction mechanism in heavy-ion collisions when the colliding nuclei have transverse separation larger that the nuclear diameter. In these ultra-peripheral collisions (UPC) the photon can provide a clean probe of the partonic structure of the nucleus analogous with deep inelastic scattering. This talk presents measurements of dijet production in ultra-peripheral Pb+Pb collisions performed with the ATLAS detector. Events are selected using requirements on rapidity gaps and forward neutron production to identify the photo-nuclear processes. The relatively clean environment of these events allows for measurements in a region of x and $Q^2$ where significant nuclear PDF modifications are expected to be present and not strongly constrained by previous measurements.

Experimental Collaboration ATLAS Collaboration

Primary author

Presentation Materials

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