Novel tools and observables for jet physics in heavy-ion collisions / 5th Heavy Ion Jet Workshop

Europe/Zurich
CERN

CERN

Description

The deadline for application is currently extended to Aug 11. There is still the possibility for financial support for a limited of participants.

Welcome to the CERN TH institute “Novel tools and observables for jet physics in heavy-ion collisions”, which will be organised together with the 5th Heavy Ion Jet Workshop. The workshop and ensuing institute aims at bringing together theorists and experimentalists interested in jet observables in heavy-ion collisions.

The study of QCD jets and their modifications in the dense environment provided in heavy-ion collisions is motivated by two main aspects. Most prominently, jets serve as perturbative and well-controlled probes of the characteristics of the underlying medium. In this, they complement the physics information obtained by analysing the features of bulk particle production, such as flow observables and heavy-quark measurements. However, the processes underlying jet quenching share many similar features with generic equilibration mechanisms. In this respect, characterizing the medium-modification of the jet substructure may open a window of testing the dynamics responsible for medium collective behaviour, for which there is ample experimental evidence.

The scope of the workshop will span a wide range of topics, striving to connect theoretical ideas with clearly defined observables and exploring the related technical challenges. A focal point of the discussions will also be novel grooming techniques for jet substructure observables. We invite interested participants to reflect on the following points:

  • How to extract meaningful information about medium properties from jet measurements, in particular jet substructure?

  • What are the physical mechanisms and what are the relevant observables?

  • What do we learn from jet grooming and declustering techniques, and what are the right tools?

  • What are the prospects for jet measurements in heavy-ion collisions for the future (for example, sPHENIX, HL-LHC)?

The format of the meeting is twofold. We open with a 2,5 day workshop with a relatively dense programme of presentations. The remaining time (2,5 days + 1 week) will be devoted to the TH institute during which the discussion will be organised in working groups whose concrete topics will be guided by the participants’ interests. There will be ample time for informal discussions and collaboration, and we will reconvene sporadically to take the pulse of the ongoing discussions. As a final product of the workshop, we envision a brief report summarising the status of the discussions and a statement of interest for the future that will be finalised during Autumn 2017.

We would like to ask you to provide a few key topics that you would be interested in discussing during the workshop in the registration form in order for us to set up the working groups. Besides, if you wish to give a talk during the workshop, please indicate so during the registration. We encourage the participants to stay at least for one week at the meeting.

We strongly invite you to participate in this collaborative effort in a friendly atmosphere, and look forward to your contribution!

The Institute is funded by CERN and is supported by LPCC .

Registration: There is no registration fee.  Registration will be open until Aug 11, 2017. We can only provide financial support for a limited number of participants.

Organisers: Matteo Cacciari, Leticia Cunqueiro, Yen-Jie Lee, Yacine Mehtar-Tani, Guilherme Milhano, Matthew Nguyen, Dennis Perepelitsa, Konrad Tywoniuk, Marta Verweij, Urs Wiedemann, Korinna Zapp

 

 

Registration
Application form
Participants
  • Anton Rebhan
  • Austin Alan Baty
  • Camelia Mironov
  • Carlos A. Salgado
  • Chang Ning-Bo
  • Cheng-Chieh Peng
  • Christopher Mc Ginn
  • Dennis Perepelitsa
  • Edmond Iancu
  • Fabio Dominguez
  • Francois Arleo
  • Gavin Salam
  • Guilherme Teixeira De Almeida Milhano
  • Gunther Roland
  • Hadi Hassan
  • Harry Arthur Andrews
  • James Mulligan
  • Jorge Casalderrey Solana
  • Konrad Tywoniuk
  • Krzysztof Kutak
  • Kurt Jung
  • Leticia Cunqueiro Mendez
  • Liliana Apolinario
  • Marco Van Leeuwen
  • Marta Verweij
  • Martin Spousta
  • Matteo Cacciari
  • Matthew Nguyen
  • Michal Deak
  • Mrinal Dasgupta
  • Nima Zardoshti
  • Peter Martin Jacobs
  • Philip Coleman Harris
  • Ran Bi
  • Redmer Alexander Bertens
  • Rosi Jan Reed
  • Shanshan Cao
  • Souvik Priyam Adhya
  • Tan Luo
  • Víctor Vila
  • WEI CHEN
  • Yacine Mehtar-Tani
  • Yang-Ting Chien
  • Yen-Jie Lee
  • Yi Chen
    • 09:00 10:30
      Workshop session: Session 1 13-2-005

      13-2-005

      CERN

      90
      Show room on map
      • 09:00
        Welcome 15m
      • 09:30
        Quenching of Hadron Spectra in Heavy Ion Collisions at the LHC 30m
        Speaker: Francois Arleo (Laboratoire Leprince-Ringuet)
      • 10:00
        Heavy ion jet measurements at RHIC and LHC: a common approach 30m
        Speaker: Peter Martin Jacobs (Lawrence Berkeley National Lab. (US))
    • 10:30 11:00
      Coffee break 30m
    • 11:00 12:30
      Workshop session: Session 2 13-2-005

      13-2-005

      CERN

      90
      Show room on map
      • 11:00
        Role of flavor and color coherence in the jet quenching 30m
        Speaker: Martin Spousta (Charles University)
      • 11:30
        An event-by-event picture for medium-induced jet evolution 30m
        Speaker: Edmond Iancu (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
      • 12:00
        Energy loss of a hard collinear gluon 30m
        Speaker: Fabio Dominguez (Universidade de Santiago de Compostela)
    • 12:30 14:00
      Lunch 1h 30m
    • 14:00 15:30
      Workshop session: Session 3 13-2-005

      13-2-005

      CERN

      90
      Show room on map
      • 14:00
        Prospects for jet and heavy flavor measurements with sPHENIX 30m
        Speaker: Gunther Roland (Massachusetts Inst. of Technology (US))
      • 14:30
        Towards tomography of quark-gluon plasma using double inclusive di-jets in Pb-Pb collisions 30m
        Speaker: Michal Deak (Polish Academy of Sciences (PL))
      • 15:00
        Measurements of jet spectra and jet-particle correlations with CMS 30m

        Jet production has long been used as a probe for the hot and dense medium created in collisions of heavy ions at the LHC. As jets traverse the medium, they are expected to lose energy through radiative and collisional processes. These mechanisms are thought to be responsible for the observed suppression of high-pT hadron and jet production, a phenomenon known as "jet quenching". Recent measurements from CMS have shown that observations of jet energy loss in dijet systems is somewhat obfuscated due to varying energy loss magnitudes between leading and subleading jets. By measuring correlations of jets and tracks in a variety of dimensions, information regarding jet energy loss, jet broadening, and particle production can be obtained. We observe substantial modification of jet structure in Pb+Pb collisions relative to pp collisions out to very large distances from the jet axis, as well as differences in energy loss for both leading and subleading jets.

        Speaker: Kurt Eduard Jung (University of Illinois at Chicago (US))
    • 15:30 16:30
      Discussion 13-2-005

      13-2-005

      CERN

      90
      Show room on map
    • 09:00 10:30
      Workshop session: Session 4 13-2-005

      13-2-005

      CERN

      90
      Show room on map
      • 09:00
        Groomed jet substructures in heavy ion collisions 30m
        Speaker: Dr. Yang-Ting Chien (Massachusetts Institute of Technology)
      • 09:30
        ATLAS 30m
      • 10:00
        Investigating the Role of Coherence Effects on Jet Quenching in Pb-Pb Collisions at $\sqrt{s_{NN}} =2.76$ TeV using Jet Substructure 30m
        Speaker: Nima Zardoshti (University of Birmingham (GB))
    • 10:30 11:00
      Coffee break 30m
    • 11:00 12:30
      Workshop session: Session 5 13-2-005

      13-2-005

      CERN

      90
      Show room on map
      • 11:00
        Sub-Jet observables in Heavy-ion Collisions 30m
        Speaker: Liliana Apolinario (Instituto Superior Técnico)
      • 11:30
        CMS 1 30m
      • 12:00
        ALICE 30m
    • 12:30 14:00
      Lunch break 1h 30m
    • 14:00 15:30
      Workshop session: Session 6 6-2-024 - BE Auditorium Meyrin

      6-2-024 - BE Auditorium Meyrin

      CERN

      120
      Show room on map
      • 14:00
        Coherence effects at strong coupling 30m
        Speaker: Jorge Casalderrey Solana (University of Oxford)
      • 14:30
        CMS 2 30m
      • 15:00
        Color coherence in multiple antenna medium radiation 30m
        Speaker: Victor Vila Perez (Universidade de Santiago de Compostela (ES))
    • 15:30 16:30
      Discussion 6-2-024 - BE Auditorium Meyrin

      6-2-024 - BE Auditorium Meyrin

      CERN

      120
      Show room on map
    • 09:00 10:30
      Workshop session: Session7 13-2-005

      13-2-005

      CERN

      90
      Show room on map
      • 09:00
        Multistage jet evolution in relativistic heavy-ion collisions 30m
        Speaker: Shanshan Cao (Lawrence Berkeley National Lab)
      • 09:30
        Linear Boltzmann Transport for Jet Propagation in the Quark Gluon Plasma 30m
        Speaker: Tan Luo (Central China Normal University)
      • 10:00
        Jet-induced medium excitation in gamma-hadron correlation 30m

        We use a Linear Boltzmann Transport model (LBT model) coupled to (3+1)D ideal hydrodynamic evolution in real time with fluctuating initial conditions simulate both the transport of jet shower partons and jet-induced medium excitation. In this coupled approach, propagation of energetic shower partons are treated in the Linear Boltzmann transport (LBT) model on the basis of evolving bulk medium information provided by 3+1D hydrodynamic model. Soft partons from both elastic and inelastic processes from the LBT are fed back into the medium as a source term in the 3+1D hydrodynamic. Such source terms in the hydrodynamic will induce medium excitation. With this coupled approach we investigate the hadrons spectrum in the whole transverse momentum region and focus on gamma-hadron to study the effect of jet-induced medium excitations.

        Speaker: WEI CHEN (CCNU)
    • 10:30 11:00
      Coffee break 30m
    • 11:00 12:00
      Workshop session: Session 8 13-2-005

      13-2-005

      CERN

      90
      Show room on map
    • 12:00 12:30
      Discussion 13-2-005

      13-2-005

      CERN

      90
      Show room on map
    • 12:30 14:00
      Lunch 1h 30m
    • 14:00 15:30
      TH-institute session: Opening
      • 14:00
        Introduction to TH institute 30m
      • 14:30
        Studies of medium response with jets and hadrons, where we are? 1h
        Speaker: Yen-Jie Lee (Massachusetts Inst. of Technology (US))
    • 14:00 15:00
      TH-institute session: Plenary
      • 14:00
        Status of jet quenching theory and phenomenology in heavy-ion collisions 1h
        Speaker: Carlos Albert Salgado Lopez (CERN, TH Division)
    • 15:00 16:00
      TH-institute session: Recap: week 1
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