Observation of Medium-Induced Yield Enhancement and Acoplanarity Broadening of Low-pT Jets from Measurements in pp and Central Pb-Pb Collisions at root sNN=5.02 TeV
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00380179" target="_blank" >RIV/68407700:21340/24:00380179 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevLett.133.022301" target="_blank" >https://doi.org/10.1103/PhysRevLett.133.022301</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.133.022301" target="_blank" >10.1103/PhysRevLett.133.022301</a>
Alternative languages
Result language
angličtina
Original language name
Observation of Medium-Induced Yield Enhancement and Acoplanarity Broadening of Low-pT Jets from Measurements in pp and Central Pb-Pb Collisions at root sNN=5.02 TeV
Original language description
The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum (high p(T)) hadron trigger in proton-proton and central Pb-Pb collisions at root S-NN = 5.02 TeV. A data-driven statistical method is used to mitigate the large uncorrelated background in central Pb-Pb collisions. Recoil jet distributions are reported for jet resolution parameter R = 0.2, 0.4, and 0.5 in the range 7 < p(T, jet) < 140 GeV/c and trigger-recoil jet azimuthal separation pi/2 < Delta phi < pi. The measurements exhibit a marked medium-induced jet yield enhancement at low pT and at large azimuthal deviation from Delta phi similar to pi. The enhancement is characterized by its dependence on Delta phi, which has a slope that differs from zero by 4.7 sigma. Comparisons to model calculations incorporating different formulations of jet quenching are reported. These comparisons indicate that the observed yield enhancement arises from the response of the QGP medium to jet propagation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Letters
ISSN
0031-9007
e-ISSN
1079-7114
Volume of the periodical
133
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
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UT code for WoS article
001355884800002
EID of the result in the Scopus database
2-s2.0-85198282865