Abstract
The energy loss of jets in heavy-ion collisions is expected to depend on the mass and flavor of the initiating parton. Thus, measurements of jet quenching with tagged partons place powerful constraints on the thermodynamic and transport properties of the hot and dense medium. Furthermore, recent results that constrain the jet production mechanism will shed additional light on the contributions of leading and next-to-leading order heavy flavor jet production with regard to the global energy loss picture. To this end, we present recent results measuring spectra and nuclear modification factors of jets associated to charm and bottom quarks in both pPb and PbPb collisions, as well as measurements of dijet asymmetry of pairs of b-jets in PbPb collisions.
Highlights
The energy loss of highly energetic partons in large collision systems is generally attributed to a process called “jet quenching." Interactions of the jet with the hot and dense medium known as Quark Gluon Plasma, thought to be created in collisions of large ions, induce constituent particle energy loss and jet broadening, where constituent particles are pushed far from the jet axis
Measurements of jet quenching are expected to depend on parton flavor primarily through a modification of two jet quenching mechanisms: radiative and collisional energy loss [1, 2], as both these processes are thought to include mass-dependent effects [3, 4]
Under the assumption that radiative energy loss is the dominant component of jet quenching, gluon jets are expected to quench more strongly than quark jets, due to the larger color factor for gluon emission from gluons than from quarks [5]
Summary
The energy loss of highly energetic partons in large collision systems is generally attributed to a process called “jet quenching." Interactions of the jet with the hot and dense medium known as Quark Gluon Plasma, thought to be created in collisions of large ions, induce constituent particle energy loss and jet broadening, where constituent particles are pushed far from the jet axis. Measurements of jet quenching are expected to depend on parton flavor primarily through a modification of two jet quenching mechanisms: radiative and collisional energy loss [1, 2], as both these processes are thought to include mass-dependent effects [3, 4].
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