Measurement of ψ(2S) polarisation in pp collisions at √s=7 TeV
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ISSN: 1434-6044
E-ISSN: 1434-6052
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Abstract
The polarisation of prompt ψ(2S) mesons is measured by performing an angular analysis of ψ(2S)→μ+μ− decays using proton-proton collision data, corresponding to an integrated luminosity of 1.0 fb −1, collected by the LHCb detector at a centre-of-mass energy of 7 TeV. The polarisation is measured in bins of transverse momentum pT and rapidity y in the kinematic region 3.5<pT<15GeV/c and 2.0<y<4.5, and is compared to theoretical models. No significant polarisation is observed
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Aaij, R., Adeva, B., Adinolfi, M. et al. Measurement of ψ(2S) polarisation in pp collisions at √s = 7 TeV. Eur. Phys. J. C 74, 2872 (2014). https://doi.org/10.1140/epjc/s10052-014-2872-9
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© CERN for the benefit of the LHCb collaboration 2014. This article is published with open access at Springerlink.com. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Funded by SCOAP3 / License Version CC BY 4.0.