Measurement of jet suppression in central Pb–Pb collisions at
The transverse momentum ( ) spectrum and nuclear modification factor ( ) of reconstructed jets in 0–10% and 10–30% central Pb–Pb collisions at were measured. Jets were reconstructed using the anti- jet algorithm with a resolution parameter of from charged and neutral particles, utilizing the ALICE tracking detectors and Electromagnetic Calorimeter (EMCal). The jet spectra are reported in the pseudorapidity interval of for in 0–10% and for in 10–30% collisions. Reconstructed jets were required to contain a leading charged particle with to suppress jets constructed from the combinatorial background in Pb–Pb collisions. The leading charged particle requirement applied to jet spectra both in pp and Pb–Pb collisions had a negligible effect on the . The nuclear modification factor was found to be in 0–10% and in 10–30% collisions, independent of within the uncertainties of the measurement. The observed suppression is in fair agreement with expectations from two model calculations with different approaches to jet quenching.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Contributing Organization:
- ALICE Collaboration
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1198154
- Alternate ID(s):
- OSTI ID: 1863688
- Report Number(s):
- LLNL-JRNL-737125; S0370269315002828; PII: S0370269315002828
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Vol. 746 Journal Issue: C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
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