Exploring the Phase Space of Jet Splittings at ALICE using Grooming and Recursive Techniques

Abstract

Hard splittings in the evolution of a jet may be modified by the presence of a dense strongly interacting medium. Grooming procedures can be used to isolate such hard components of a jet and allows one to focus on the two subjets resulting from a sufficiently hard partonic splitting. Measurements of the symmetry parameter ($z_{\mathrm{g}}$), angular separation ($R_{\mathrm{g}}$) and number of splittings ($n_{\mathrm{SD}}$) of Soft Drop groomed jets are reported as measured with the ALICE Detector in pp and Pb--Pb collisions at $\sqrt{s}$ = 7 TeV and $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV respectively. The use of recursive splittings and their mappings to identify interesting regions of phase space are also discussed.

4 pages, 4 figures, Quark Matter 2018

References in corpus (2)

• PYTHIA 6.4 Physics and Manual
• Groomed jets in heavy-ion collisions: sensitivity to medium-induced bremsstrahlung

Cited by in corpus (2)

• Can We Observe Jet $P_T$-broadening in Heavy-Ion Collisions at the LHC?
• Probing heavy ion collisions using quark and gluon jet substructure with machine learning