Feb 5 – 11, 2017
Hyatt Regency Chicago
America/Chicago timezone

$\Psi$(2S) and J/$\Psi$ modification in pPb collisions at 5.02 TeV with CMS

Not scheduled
2h 30m
Hyatt Regency Chicago

Hyatt Regency Chicago

151 East Wacker Drive Chicago, Illinois, USA, 60601
Board: L03


Songkyo Lee (Korea University (KR))


A variety of effects modify the charmonium production in pPb collisions with respect to pp collisions, like modification of nPDFs, initial-state energy loss and nuclear break-up. The forward/backward ratio of the J/$\Psi$, previously measured by CMS, is particularly sensitive to such effects. However, both nPDF and initial-state energy loss should modify the ground and excited state in a similar way, while evidence for a different modification of the J/$\Psi$ and $\Psi$(2S) in pPb have been reported by other experiments. In this presentation, final prompt J/$\Psi$ results in pPb collisions at 5.02 TeV will presented, including the new measurement of the $R_{pA}$ using the 2015 pp data taken at the same energy. New results will also be reported regarding prompt $\Psi$(2S) meson production in pPb collisions, as a function of transverse momentum and rapidity and down to $p_{T}$ = 4 GeV.

Collaboration CMS
Preferred Track Quarkonia

Primary author

Songkyo Lee (Korea University (KR))

Presentation materials