Measurement of the nuclear modification factor for inclusive jets in Pb+Pb collisions at sNN=5.02 TeV with the ATLAS detector

A complete set of in-medium splitting functions to any order in opacity

“…The derivation and numerical evaluation of higher order in opacity corrections is important and timely, as their real application is in medium-induced splitting kernels that enter the calculation of fixed order and resummed observables involving reconstructed jets. Corresponding to the changes we see in the more differential splitting functions, we anticipate that the greatest phenomenological impacts will be on the interpretation of jet substructure measurements in heavy ion collisions [24][25][26][27][28][29][30][31]. Even in more inclusive observables, such as the suppression of jet production denoted R AA , we anticipate the second order in opacity corrections to play a role, albeit milder.…”

“…We are also motivated by the more precise experimental measurements of jets and jet substructure that have become available or are expected in the near future, for recent examples see [24][25][26][27][28][29][30][31]. In-medium splitting kernels enter directly into the fixed order and resummed calculation of such observables [32][33][34][35][36].…”

Deciphering the 𝓏g distribution in ultrarelativistic heavy ion collisions

“…As a baseline for discussion, we will study the jet nuclear modification factor R AA . Comparing our predictions to the ATLAS measurements [30] will allow us to calibrate our medium parameterŝ q and L (and a coupling α s,med ). We will find that the dependence of R AA on the jet transverse momentum p T is controlled by the evolution of the parton multiplicity via VLEs inside the medium.…”

“…Figure 21. Left: our MC results for jet R AA and for 4 sets of medium parameters which give quasi-identical predictions are compared to the ATLAS data [30] (black dots with error bars). Right: the MC predictions for the medium/vacuum ratio R (norm) (z g ) of the self-normalised z g distributions are presented in bins of p T for the same 4 sets of medium parameters as in the left figure.…”

Study of jet-medium interactions using jet shape observables in heavy ion collisions at LHC energies with JEWEL

“…Study of jet-medium interactions using jet shape observables in heavy ion collisions at LHC energies with JEW where N jet AA and N jet pp are the number of jets in A-A and pp collisions, respectively and N coll is the number of binary nucleon-nucleon collision averaged over a given collison centrality class. Figure 1 shows a comparison of p T dependence of R jet AA calculated from Jewel with the recent measurements from ALICE [45,46], ATLAS [47,48] and CMS [49] for jet resolution parameter R = 0.4 at √ s N N = 5.02 TeV [ Fig.1(a)] and 2.76…”