Search for jet quenching effects in high-multiplicity proton-proton collisions at root s = 13TeV
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F21%3A00546394" target="_blank" >RIV/61389005:_____/21:00546394 - isvavai.cz</a>
Alternative codes found
RIV/61389005:_____/21:00552960
Result on the web
<a href="http://dx.doi.org/10.22323/1.387.0156" target="_blank" >http://dx.doi.org/10.22323/1.387.0156</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.22323/1.387.0156" target="_blank" >10.22323/1.387.0156</a>
Alternative languages
Result language
angličtina
Original language name
Search for jet quenching effects in high-multiplicity proton-proton collisions at root s = 13TeV
Original language description
The ALICE Collaboration reports results of a novel approach to jet-quenching measurements in high-multiplicity pp collisions at roots = 13 TeV, searching for broadening of the acoplanarity distribution measured by the semi-inclusive distribution of jets recoiling from a high-pT hadron. Charged-particle jet reconstruction is carried out using the anti-kT algorithm with R = 0.4. A data-driven statistical method is used to correct the recoil jet yield for uncorrelated background, including multi-partonic interactions. High-multiplicity (HM) pp events are selected based on charged-particle multiplicity registered in forward scintillator detectors, and their acoplanarity distributions are compared to those for Minimum Bias (MB) events. Significant broadening is observed in the acoplanarity distribution of HM events, consistent with jet quenching. However, qualitatively similar features are also seen in a simulated population of pp collisions generated by PYTHIA 8 Monash, which does not incorporate jet quenching. We utilize these PYTHIA simulations to explore the origin of the observed effect. The PYTHIA simulations suggest that the enhanced acoplanarity results from the bias induced by the HM selection towards multi-jet final states.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
<a href="/en/project/LTT17018" target="_blank" >LTT17018: Getting new knowledge of the microworld using the CERN infrastructure</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of Science
ISBN
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ISSN
1824-8039
e-ISSN
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Number of pages
5
Pages from-to
156
Publisher name
Sissa Medialab Srl
Place of publication
Trieste
Event location
Austin
Event date
Jun 1, 2020
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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