Measurement of ψ(2S) polarisation in pp collisions at √s = 7 TeV

The LHCb Collaboration

doi:10.1140/epjc/s10052-014-2872-9

Measurement of ψ(2S) polarisation in pp collisions at √s = 7 TeV

The LHCb Collaboration

Research output: Contribution to journal › Article › Research › peer-review

41 Citations (Scopus)

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 < 15 GeV/c and 2.0 < y < 4.5, and is compared to theoretical models. No significant polarisation is observed.

Original language	English
Article number	2872
Number of pages	12
Journal	European Physical Journal C
Volume	74
Issue number	5
DOIs	https://doi.org/10.1140/epjc/s10052-014-2872-9
Publication status	Published - 2014
Externally published	Yes

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10.1140/epjc/s10052-014-2872-9

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Cite this

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title = "Measurement of ψ(2S) polarisation in pp collisions at √s = 7 TeV",

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 < 15 GeV/c and 2.0 < y < 4.5, and is compared to theoretical models. No significant polarisation is observed.",

author = "Ulrik Egede and {The LHCb Collaboration}",

year = "2014",

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AU - Egede, Ulrik

AU - The LHCb Collaboration

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N2 - 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 < 15 GeV/c and 2.0 < y < 4.5, and is compared to theoretical models. No significant polarisation is observed.

AB - 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 < 15 GeV/c and 2.0 < y < 4.5, and is compared to theoretical models. No significant polarisation is observed.

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DO - 10.1140/epjc/s10052-014-2872-9

M3 - Article

VL - 74

JO - European Physical Journal C

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SN - 1434-6052

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