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Abstract: We analytically calculate the contribution of transverse momentumconservation to the azimuthal correlations that have been proposed as signalsfor possible local strong parity violation and recently measured in heavy ioncollisions. These corrections are of the order of the inverse of the totalfinal state particle multiplicity and thus are of the same order as theobserved signal. The corrections contribute with the same sign to bothlike-sign and opposite-sign pair correlations. Their dependence on the momentumis in qualitative agreement with the measurements by the STAR collaboration,while the pseudorapidity dependence differs from the data.



Autor: Adam Bzdak, Volker Koch, Jinfeng Liao

Fuente: https://arxiv.org/







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