Studying the emergence of Hot & Cold QCD phenomena in Heavy Ions at the ATLAS experiment

Europe/Rome
IR-1A (Aula Riunioni) (Via Irnerio 46)

IR-1A (Aula Riunioni)

Via Irnerio 46

Riccardo Longo (University of Illinois Urbana-Champaign)
Description

Ricercatori INFN Bologna is inviting you to a scheduled Zoom meeting.

Topic: ATLAS ZDC
Time: Feb 27, 2024 02:30 PM Rome

Join Zoom Meeting
https://infn-it.zoom.us/j/92067957633?pwd=bXZXOFMxWG5ES3hwbFowZVNsL1pQZz09

Meeting ID: 920 6795 7633
Passcode: 835932

---

One tap mobile
+13126266799,,92067957633# US (Chicago)
+13462487799,,92067957633# US (Houston)

---

Dial by your location
• +1 312 626 6799 US (Chicago)
• +1 346 248 7799 US (Houston)
• +1 360 209 5623 US
• +1 386 347 5053 US
• +1 507 473 4847 US
• +1 564 217 2000 US
• +1 646 931 3860 US
• +1 669 444 9171 US
• +1 669 900 6833 US (San Jose)
• +1 689 278 1000 US
• +1 719 359 4580 US
• +1 929 205 6099 US (New York)
• +1 253 205 0468 US
• +1 253 215 8782 US (Tacoma)
• +1 301 715 8592 US (Washington DC)
• +1 305 224 1968 US
• +1 309 205 3325 US
• +39 020 066 7245 Italy
• +39 021 241 28 823 Italy
• +39 069 480 6488 Italy

Meeting ID: 920 6795 7633

Find your local number: https://infn-it.zoom.us/u/ac5DfcykDG

 

Organized by

Benedetto Giacobbe

    • 1
      Studying the emergence of Hot & Cold QCD phenomena in Heavy Ions at the ATLAS experiment

      Since the beginning of its operations, the ATLAS experiment has participated in the LHC Heavy-ion program, recording A+A and p+A collisions at different center of mass energies, as well as dedicated low luminosity p+p data to be used as a baseline to study nuclear modification effects. Thanks to the ATLAS detector's versatility, several unique measurements have been performed using Run 1 and 2 data, advancing the understanding of Quantum Chromodynamics (QCD) in both hot and cold temperature regimes and of precision Quantum Electrodynamics.
      Jet and track-based measurements in A+A collisions provided input to probe the strong coupling behavior of the Quark Gluon Plasma (QGP) over a variety of length scales to explore the emergence of quark and gluon modes at short wavelengths. Meanwhile, similar measurements in smaller systems like p+A, p+p, and photo-nuclear reactions have found collective behavior and, at the same time, no clear evidence of QGP formation, raising several intriguing questions that still need to be answered. p+A and photo-nuclear reactions have also been extensively studied at ATLAS to investigate initial-state effects, shedding light on dynamics related to nuclear structure and color fluctuations in the proton.
      Several of these measurements rely on the collision geometry characterization that is provided by a high-performance Zero Degree Calorimeter (ZDC) installed for Heavy Ion runs at ±140 meters from the interaction point. This vital piece of instrumentation will need an upgrade for the HL-LHC era, where the radiation environment and space available for detector implementation will place significant challenges that demand the construction of a new HL-ZDC.
      This talk will feature recent results obtained by the ATLAS Heavy Ion group, review the performance of the existing ZDC, and discuss the future outlook for the HL-ZDC upgrade.

      Speaker: Dr Riccardo Longo (University of Illinois Urbana-Champaign)