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EnglishThe 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. © 2014 CERN for the benefit of the LHCb collaboration.
http://hdl.handle.net/11573/665105| Titolo: | Measurement of ψ(2S) polarisation in pp collisions at √s = 7 TeV |
| Autori interni: | SCIUBBA, Adalberto SARTI, ALESSIO |
| Data di pubblicazione: | 2014 |
| Rivista: | THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS |
| 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. © 2014 CERN for the benefit of the LHCb collaboration. |
| Handle: | http://hdl.handle.net/11573/665105 |
| Appare nelle tipologie: | 01.a Pubblicazione su Rivista |
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