Jet and photon measurements from ATLAS

J. G. Saraiva

doi:10.1051/epjconf/20136014007

EPJ

a
b
d
e
ap
st
h
plus

Proceedings

Open Access

EPJ Web of Conferences 60, 14007 (2013)
https://doi.org/10.1051/epjconf/20136014007

Jet and photon measurements from ATLAS

J. G. Saraiva^a On behalf of the ATLAS Collaboration

LIP (Laboratório de Instrumentação e Física Experimental de Particulas), Av. Elias Garcia 14-1°, 1000-149, Lisboa, Portugal

^a e-mail: gentil@lip.pt.

Abstract

Differential cross-section measurements of inclusive-jet and di-jet production provide stringent tests of perturbative QCD predictions and provide inputs for determination of parton density functions. Ratios of jet multiplicities are sensitive to α_s and have reduced theoretical uncertainties. Measurements of the inclusive isolated-photon and di-photon cross-sections provide a direct probe of short-distance physics, complementary to that from measurements of jets or vector-bosons and are sensitive to the gluon density in the proton. The measurements are compared to next-to-leading-order or higher-order QCD calculations.

Acknowledgments are due to GRICES and FCT. With the FCT grant SFRH/BPD/73474/2010.

© Owned by the authors, published by EDP Sciences, 2013

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.