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Title: Measurements of photo-nuclear jet production in Pb plus Pb collisions with ATLAS
Authors: Angerami, Aaron
Aaboud, M.
Aad, G.
Abbott, B.
Abdallah, J.
Abdinov, O.
Adamczyk, L.
Keywords: UPC
nuclear parton distributions
Issue Date: 2017
Publisher: Elsevier
Abstract: Ultra-peripheral heavy ion collisions provide a unique opportunity to study the parton distributions in the colliding nuclei via the measurement of photo-nuclear jet production. An analysis of jet production in ultra-peripheral Pb+Pb collisions at root S-NN = 5.02 TeV performed using data collected with the ATLAS detector in 2015 is described. The data set corresponds to a total Pb+Pb integrated luminosity of 0.38 nb(-1). The ultra-peripheral collisions are selected using a combination of forward neutron and rapidity gap requirements. The cross-sections, not unfolded for detector response, are compared to results from PYTHIA Monte Carlo simulations re-weighted to match a photon spectrum obtained from the STARLIGHT model. Qualitative agreement between data and these simulations is observed over a broad kinematic range suggesting that using these collisions to measure nuclear parton distributions is experimentally realisable.
Description: 26th International Conference on Ultrarelativistic Nucleus-Nucleus Collissions (Quark Matter) -- FEB 05-11, 2017 -- Chicago, IL
ISSN: 0375-9474
Appears in Collections:WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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