Measurement of the prompt J/ψ and ψ(2S) polarizations in pp collisions at s=7 TeV

138Citations
Citations of this article
193Readers
Mendeley users who have this article in their library.

This artice is free to access.

Abstract

The polarizations of prompt J/ψ and ψ(2S) mesons are measured in proton-proton collisions at s=7 TeV, using a dimuon data sample collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.9 fb-1. The prompt J/ψ and ψ(2S) polarization parameters λθ{symbol}, λφ, and λθ{symbol}φ, as well as the frame-invariant quantity λ~, are measured from the dimuon decay angular distributions in three different polarization frames. The J/ψ results are obtained in the transverse momentum range 14 <0.6 and 0.6 <1.2. The corresponding ψ(2S) results cover 14 <1.5. No evidence of large polarizations is seen in these kinematic regions, which extend much beyond those previously explored. © 2013 CERN.

Cite

CITATION STYLE

APA

Chatrchyan, S., Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., … Swanson, J. (2013). Measurement of the prompt J/ψ and ψ(2S) polarizations in pp collisions at s=7 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 727(4–5), 381–402. https://doi.org/10.1016/j.physletb.2013.10.055

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free