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Hard Probes 2016

Sep 27, 2016

The 8th edition of the International Conference on Hard and Electromagnetic Probes of High-energy Nuclear Collisions (Hard Probes 2016) was hosted in Wuhan (China) on September 23 – 27. Hard Probes is one of the most important conference in our field and it is particularly focused on the recent experimental and theoretical developments on hard and electromagnetic probes in heavy-ion collisions. Several new measurements were presented by MITHIG members in parallel and plenary talks.

Distribution of xJ? of photon+jet pairs of pp and PbPb collisions normalized by the number of photon+jet pairs in central PbPb collisions at 5.02 TeV.
Distribution of xJ? of photon+jet pairs of pp and PbPb collisions normalized by the number of photon+jet pairs in central PbPb collisions at 5.02 TeV.

Chris presented new results on photon-jet correlations in pp and PbPb collisions at 5.02 TeV. This measurement allowed to characterise jet quenching precisely as a function of centrality and photon pT using the unquenched reference given by electromagnetic probes. Kaya presented the measurement of Z+jet correlations in pp and PbPb collisions at the same energy that provided further insights on our understanding of jet quenching in heavy-ion collisions. Yen-Jie presented the recent results of pseudo-rapidity distribution of di-jet in proton-proton and proton-nucleus. This very precise measurement allowed to provide very important constraints on the parton distribution functions used in theoretical calculations for pp and pPb collisions.

B meson nuclear modification factor in 0-100% PbPb collisions at 5.02 TeV.
B meson nuclear modification factor in 0-100% PbPb collisions at 5.02 TeV.

Ta-Wei presented the first measurement of B meson nuclear modification factor in PbPb collisions that confirmed a strong energy loss of b-quarks in the medium and provided further insights on the flavour dependence of energy loss in heavy-ion collisions. Jing presented the recent results on D meson nuclear modification factor in PbPb collisions that showed an impressive agreement between the RAA of charmed and light particles up to very high pT, providing strong constraints on theoretical calculations. Gian Michele gave an overview of heavy-flavour results at the LHC in the experimental wrap-up session.