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ERC

EXPLORINGMATTER Report Summary

Project ID: 647390
Funded under: H2020-EU.1.1.

Periodic Reporting for period 1 - EXPLORINGMATTER (Exploring Matter with Precision Charm and Beauty Production Measurements in Heavy Nuclei Collisions at LHCb)

Reporting period: 2015-04-01 to 2016-09-30

Summary of the context and overall objectives of the project

EXPLORINGMATTER is a project which uses the experiment LHCb at CERN to study heavy nuclei collisions in a configuration and energy never explored before. These studies can shed light to the Quark Gluon Plasma, a new state of matter still largely unknown.The objectives of the project are listed below.
• Objective 1 is to collect data in the three configurations necessary to probe QGP formation and its characteristics: pp, pA and AB collisions, where A and B are the heavy nuclei types.
• Objective 2 and 3 are to analyse the data to obtain precise measurements of charmonium, bottomonium and open charm and beauty production in heavy-ions collisions and of cold nuclear matter effects.
• Objective 4 is to use the results and techniques from EXPLORINGMATTER to think and design future experiments.

Work performed from the beginning of the project to the end of the period covered by the report and main results achieved so far

The main activities in the first period have been centered around the collection of the data in the PbPb and SMOG configurations, for the first time ever at LHCb.
The data have been collected, stored, reconstructed and analysed by my team, with the help of the experts in the collaboration.
The analysis with the PbPb data, which should be published in summer 2017, indicated the problems with the detector to reconstuct busy events and gave us an important sample of data to develop new techniques to analyse the new data sample we will collect at the end of 2018. This study is currently on-going.
The analysis of the SMOG proton - Argon sample has been summarised in a conference note and presented at Quark-Matter 2017, the most important conference in the field.
My team has also studied the feasibility of the pPb run, which has successfully happened in November 2016.
A conference note on the pPb run in 2013 has been prepared and the publication is in preparation.

Progress beyond the state of the art and expected potential impact (including the socio-economic impact and the wider societal implications of the project so far)

The PbPb collisions have been collected at LHCb for the first time, and for the first time this region in rapidity has been explored at this energy with this precision. The study of the D0 production in pPb has been studied for the first time down to zero momentum, a crucial milestone for the understanding of cold nuclear matter effects. The results in pAr collisions are the first and thus completely unique.
This project has no impact on on society.
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