Abstract
The production of a strongly interacting medium in heavy-ion collisions is identified through suppression of high transverse momentum jets leading to an effect known as jet quenching. Detailed measurements of nuclear modification factors and energy flow of the aforementioned quenched jets are performed with the CMS detector. These new results extend previous measurements to large angles with respect to the quenched jets and increase reach in the transverse momentum range. High statistics pp, pPb and PbPb data taken in 2011-13 are used in the following analysis. A new data-driven method to estimate the underlying event contribution from the forward calorimeter energy distribution is employed which takes into account possible event by event flow modulation. The flavor dependence of energy loss of jets is studied by tagging heavy flavor b-jets in these systems.
Highlights
Relativistic heavy-ions with sufficient energy density are expected to produce a strongly interacting medium known as the quark gluon plasma (QGP) [1]
The production of a strongly interacting medium in heavy-ion collisions is identified through suppression of high transverse momentum jets leading to an effect know as jet quenching
The flavor dependence of energy loss of jets is studied by tagging heavy flavor b-jets in these systems
Summary
Relativistic heavy-ions with sufficient energy density are expected to produce a strongly interacting medium known as the quark gluon plasma (QGP) [1]. Large transverse momentum (pT ) jets are of special importance because their medium interactions lead to a modification in their yield i.e, they are quenched [2] when compared to pp collisions at the same energy. The large uncertainties √in the RpA stems from the pp reference extrapolated from published inclusive jet pp spectra at s = 7 TeV using the anti-kT algorithm with resolution parameter of R = 0.5, 0.7 [20, 21].√The center o√f mass energy dependence is calculated by the ratio of the simulated spectra at s = 5.02 to s = 7 TeV and was used to scale down the measured pp spectra. The jets are suppressed by a factor of about 0.5 independent of the jet transverse momentum
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