<html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> Dear Rivet authors, I am going to present a project in the framework of the <style type="text/css">p { margin-bottom: 0.1in; direction: ltr; color: rgb(0, 0, 10); line-height: 120%; text-align: left; }p.western { font-family: "Liberation Serif",serif; font-size: 12pt; }p.cjk { font-family: "AR PL UMing HK"; font-size: 12pt; }p.ctl { font-family: "Lohit Devanagari"; font-size: 12pt; }</style> “H2020 European Integrating Initiative in Hadron Physics” around <style type="text/css">p { margin-bottom: 0.1in; direction: ltr; color: rgb(0, 0, 10); line-height: 120%; text-align: left; }p.western { font-family: "Liberation Serif",serif; font-size: 12pt; }p.cjk { font-family: "AR PL UMing HK"; font-size: 12pt; }p.ctl { font-family: "Lohit Devanagari"; font-size: 12pt; }</style> “Connecting experiments and Monte-Carlo simulations in heavy ion physics (HIP)”, see below. I learnt from my ALICE collegues that there is (a relatively new) activity of adding heavy ion applications to Rivet (where I mean heavy ion physics in a broad sense, including for example high multiplicity pp collisions). So if there are in your environment people interested in such an project, please let me know. Many thanks in advance Klaus --------------------------------------------------------------- <style type="text/css">p { margin-bottom: 0.1in; direction: ltr; color: rgb(0, 0, 10); line-height: 120%; text-align: left; }p.western { font-family: "Liberation Serif",serif; font-size: 12pt; }p.cjk { font-family: "AR PL UMing HK"; font-size: 12pt; }p.ctl { font-family: "Lohit Devanagari"; font-size: 12pt; }</style> There is a new effort from the hadron physics community to apply for funding within the “H2020 European Integrating Initiative in Hadron Physics”. The anticipated budget is 10 MEuros for 4 years. Several European infrastructures will play a crucial role in ensuring transnational access : CERN, GSI/FAIR, LNF Frascati, MAMI and ECT* Trento. Barbara Erazmus, who coordinates the initiative, asked me to define an original research project and present a corresponding letter of intent (LoI) by the end of September, which should be presented at a meeting in Nantes end of October. The steering committee will preselect projects which can be coherently included into a global proposal on hadron-physics to be submitted to Brussels. So the time schedule is tight! I would like to construct a project around “Connecting experiments and Monte-Carlo simulations in heavy ion physics (HIP)”, where HIP is meant to include “heavy-ion-like effects” in small systems. Whereas in particle physics powerful tools exist (like Rivet and MCplots for example) to use Monte-Carlo (MC) generators in order to analyse experimental data in a very transparent fashion, no systematic approach of this kind exists yet in HIP. Whereas we have a good qualitative understanding of the reaction mechanisms, we still lack of a complete and detailed understanding of these complex reactions, and the only way to get there is via Monte Carlo simulation, using state of the art "generators" based on the present knowledge of the theoretical concepts behind these complex collisions. There is an increasing demand for such simulations, in particular since “flow-like effects” have been also observed in proton-proton collisions, and traditional Monte-Carlo generators like Pythia have difficulties to describe such data. It is important to bring together the MC model builders (including theoreticians who provide the building blocks) and experimentalists, to collaborate, to define common strategies, and to work on the structures which allow to test and develop MC generators to eventually get to a quantitative understanding of the data. There is little activity in this direction in HIP, since compared to the traditional proton-proton generators there are many additional technical challenges, mainly due to the fact that CPU times per event in HIP are huge, a typical simulation run may represent several terabytes of data, and often the observables are very complex quantities. All kinds of observables should be covered. A realistic generator should be able to generate “events”, including all aspects (soft, hard, light flavor, heavy flavor etc), and only a multi-observable analysis will finally allow to understand the dynamics. This project could help - to organize workshops to bring together the experts as well as young researchers and students, - to finance mutual visits in partner laboratories, - to finance postdocs (and PhD scholarships if possible) in particular to work on the technical issues of linking MC generation and experiment </body> </html>