Measurement of polarisation in collisions at = 7 TeV
LHCb Collaboration, R Aaij, B Adeva, M Adinolfi… - The European Physical …, 2014 - Springer
LHCb Collaboration, R Aaij, B Adeva, M Adinolfi, A Affolder, Z Ajaltouni, J Albrecht, F Alessio…
The European Physical Journal C, 2014•SpringerThe polarisation of prompt ψ (2S) ψ (2 S) mesons is measured by performing an angular
analysis of ψ (2S)\! → μ^+ μ^-ψ (2 S)→ μ+ μ-decays using proton-proton collision data,
corresponding to an integrated luminosity of 1.0\, fb^-1 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 p_ T p T and rapidity yy in the kinematic region 3.5< p_ T< 15\, GeV\!/c 3.5< p T<
15 GeV/c and 2.0< y< 4.5 2.0< y< 4.5, and is compared to theoretical models. No significant …
analysis of ψ (2S)\! → μ^+ μ^-ψ (2 S)→ μ+ μ-decays using proton-proton collision data,
corresponding to an integrated luminosity of 1.0\, fb^-1 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 p_ T p T and rapidity yy in the kinematic region 3.5< p_ T< 15\, GeV\!/c 3.5< p T<
15 GeV/c and 2.0< y< 4.5 2.0< y< 4.5, and is compared to theoretical models. No significant …
Abstract
The polarisation of prompt mesons is measured by performing an angular analysis of decays using proton-proton collision data, corresponding to an integrated luminosity of 1.0, collected by the LHCb detector at a centre-of-mass energy of 7 TeV. The polarisation is measured in bins of transverse momentum and rapidity in the kinematic region and , and is compared to theoretical models. No significant polarisation is observed.
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