The ATLAS experiment has observed 1995 Z boson candidates in data corresponding to 0.15  nb-1 of integrated luminosity obtained in the 2011 LHC Pb+Pb run at √sNN=2.76  TeV. The Z bosons are reconstructed via dielectron and dimuon decay channels, with a background contamination of less than 3%. Results from the two channels are consistent and are combined. Within the statistical and systematic uncertainties, the per-event Z boson yield is proportional to the number of binary collisions estimated by the Glauber model. The elliptic anisotropy of the azimuthal distribution of the Z boson with respect to the event plane is found to be consistent with zero.

G. Aad, T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, A. Abdelalim, et al. (2013). Measurement of Z Boson Production in Pb-Pb Collisions at sqrt[s_{NN}]=2.76  TeV with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 110, 022301-1-022301-18 [10.1103/PhysRevLett.110.022301].

Measurement of Z Boson Production in Pb-Pb Collisions at sqrt[s_{NN}]=2.76  TeV with the ATLAS Detector

BELLAGAMBA, LORENZO;BERTIN, ANTONIO;BOSCHERINI, DAVIDE;BRUNI, ALESSIA;BRUNI, GRAZIANO;CAFORIO, DAVIDE;DE CASTRO, STEFANO;DI SIPIO, RICCARDO;FABBRI, LAURA;FRANCHINI, MATTEO;GIACOBBE, BENEDETTO;MASSA, IGNAZIO GIACOMO;MENGARELLI, ALBERTO;MONZANI, SIMONE;PICCININI, MAURIZIO;RINALDI, LORENZO;ROMANO, MARINO;SBARRA, CARLA;SBRIZZI, ANTONIO;SEMPRINI CESARI, NICOLA;SPIGHI, ROBERTO;VALENTINETTI, SARA;VILLA, MAURO;I. Vivarelli;ZOCCOLI, ANTONIO;
2013

Abstract

The ATLAS experiment has observed 1995 Z boson candidates in data corresponding to 0.15  nb-1 of integrated luminosity obtained in the 2011 LHC Pb+Pb run at √sNN=2.76  TeV. The Z bosons are reconstructed via dielectron and dimuon decay channels, with a background contamination of less than 3%. Results from the two channels are consistent and are combined. Within the statistical and systematic uncertainties, the per-event Z boson yield is proportional to the number of binary collisions estimated by the Glauber model. The elliptic anisotropy of the azimuthal distribution of the Z boson with respect to the event plane is found to be consistent with zero.
2013
G. Aad, T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, A. Abdelalim, et al. (2013). Measurement of Z Boson Production in Pb-Pb Collisions at sqrt[s_{NN}]=2.76  TeV with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 110, 022301-1-022301-18 [10.1103/PhysRevLett.110.022301].
G. Aad;T. Abajyan;B. Abbott;J. Abdallah;S. Abdel Khalek;A. Abdelalim;O. Abdinov;R. Aben;B. Abi;M. Abolins;O. AbouZeid;H. Abramowicz;H. Abreu;B. Achary...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/142574
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