Measurement of the high-mass Drell–Yan differential cross-section in pp collisions at √s = 7 TeV with the ATLAS detector

Aad, G. and Abajyan, T. and Abbott, B. and Abdallah, J and Khalek, S. A. and Abdelalim, A. A. and Abdinov, O. and Aben, R. and Abi, B. and Abolins, M. and AbouZeid, O. S. and Abramowicz, H. and Abreu, H. and Abulaiti, Y. and Acharya, B. S. and Adamczyk, L. and Adams, D. L. and Addy, T. N. and Adelman, J. and Adomeit, S. and Adye, T. and Aefsky, S. and Aguilar-Saavedra, J. A. and Agustoni, M. and Ahlen, S. P. and Ahles, F. and Ahmad, A. and Ahsan, M. and Aielli, G. and Akesson, T. P. A. and Krasznahorkay, Attila and Nagai, Yoshikazu and Pásztor, Gabriella and Tóth, József (2013) Measurement of the high-mass Drell–Yan differential cross-section in pp collisions at √s = 7 TeV with the ATLAS detector. PHYSICS LETTERS B, 725 (4-5). pp. 223-242. ISSN 0370-2693

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Abstract

This Letter reports a measurement of the high-mass Drell–Yan differential cross-section in protonproton collisions at a centre-of-mass energy of 7 TeV at the LHC. Based on an integrated luminosity of 4.9 fb−1 , the differential cross-section in the Z/γ∗ → e +e − channel is measured with the ATLAS detector as a function of the invariant mass, mee, in the range 116 < mee < 1500 GeV, for a fiducial region in which both the electron and the positron have transverse momentum pT > 25 GeV and pseudorapidity |η| < 2.5. A comparison is made to various event generators and to the predictions of perturbative QCD calculations at next-to-next-to-leading order.

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