May 13 – 19, 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

Measurement of Jet Nuclear Modification Factor in PbPb Collisions at $\sqrt{s_\text{NN}}$ = 5.02 TeV with CMS

May 16, 2018, 11:50 AM
Sala Perla, 1st Floor (Palazzo del Casinò)

Sala Perla, 1st Floor

Palazzo del Casinò

Parallel Talk Jet modifications and high-pT hadrons Jet modifications and high-pT hadrons


Christopher Mc Ginn (Massachusetts Inst. of Technology (US))


Inclusive jet spectra in PbPb and pp collisions at 5.02 TeV are measured in data collected by the CMS detector at the LHC during Run 2 in 2015. The measurement is performed for jet transverse momentum greater than 200 GeV/c and a pseudorapidity window of $|\eta|<2$. The jet nuclear modification factor is extracted for various collision centrality selections to study the impact of jet quenching on jet yields. The measurement is compared to theoretical calculations. The radius dependence of the jet suppression is expected to be sensitive to the jet energy loss mechanism and medium response. Therefore, studies of jets in PbPb and pp are explored for unprecedented large jet radius parameter, ranging from 0.2 to 1.0 with the anti-kt algorithm. The comparative measurement of suppression over small to large radius parameter maps energy loss out of the cone in a theoretically controlled way.

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Collaboration CMS
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