WIN2019 The 27th International Workshop on Weak Interactions and Neutrinos.

Upsilon production vs charged particles multiplicity

Not scheduled

20m

Bari

Poster Flavor and Precision Physics Poster session

Speaker

Collaboration CMS

Description

The ratios of the production cross sections of the Upsilon(nS) mesons are studied using a sample of pp collisions at sqrt(s)=7 TeV, corresponding to an integrated luminosity of 4.8 fb−1, collected with the CMS detector at LHC. The ratios are measured for Upsilon(nS) as a function of the number of charged tracks. Evidence of a decrease of the ratios between the higher and the lower mass states as a function of the particles’ multiplicity is observed.

Collaboration name

CMS