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Measurement of the B0–B0 and B0s –B0s production asymmetries in pp collisions at √s = 7 TeV
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LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Craik, Daniel, Dossett, D., Gershon, T. J., Kreps, Michal, Langenbruch, Christoph, Latham, Thomas, O'Hanlon, Daniel P., Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Wallace, Charlotte and Whitehead, M. (Mark)). (2014) Measurement of the B0–B0 and B0s –B0s production asymmetries in pp collisions at √s = 7 TeV. Physics Letters B, Volume 739 . pp. 218-228. doi:10.1016/j.physletb.2014.10.005 ISSN 0370-2693.
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Official URL: http://dx.doi.org/10.1016/j.physletb.2014.10.005
Abstract
The View the MathML source and View the MathML source production asymmetries, AP(B0) and View the MathML source, are measured by means of a time-dependent analysis of B0→J/ψK⁎0, B0→D−π+ and View the MathML source decays, using a data sample corresponding to an integrated luminosity of 1.0 fb−1, collected by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The measurements are performed as a function of transverse momentum and pseudorapidity of the B0 and View the MathML source mesons within the LHCb acceptance. The production asymmetries, integrated over pT and η in the range 4<pT<30 GeV/c and 2.5<η<4.5, are determined to be AP(B0)=(−0.35±0.76±0.28)% and View the MathML source, where the first uncertainties are statistical and the second systematic.
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