6533b821fe1ef96bd127bf12

RESEARCH PRODUCT

Measurement of psi (2S) polarisation in pp collisions at root s=7 TeV

Lhcb CollaborationFernando Martínez VidalArantza Oyanguren CamposPablo Ruiz VallsCarlos Sánchez Mayordomo

subject

Astrophysics::High Energy Astrophysical PhenomenaHigh Energy Physics::ExperimentFísica nuclearNuclear Experiment

description

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.

10.1140/epjc/s10052-014-2872-9http://dx.doi.org/10.1140/epjc/s10052-014-2872-9