Production of Lambda and K-S(0) in jets in p-Pb collisions at root s(NN)=5.02 TeV and pp collisions at root s=7 TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F22%3A00363851" target="_blank" >RIV/68407700:21340/22:00363851 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.physletb.2022.136984" target="_blank" >https://doi.org/10.1016/j.physletb.2022.136984</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2022.136984" target="_blank" >10.1016/j.physletb.2022.136984</a>

Result language

angličtina

Original language name

Production of Lambda and K-S(0) in jets in p-Pb collisions at root s(NN)=5.02 TeV and pp collisions at root s=7 TeV

Original language description

The production of A baryons and K-S(0) mesons (V-0 particles) was measured in p-Pb collisions at root s(NN) = 5.02 TeV and pp collisions at root s = 7 TeV with ALICE at the LHC. The production of these strange particles is studied separately for particles associated with hard scatterings and the underlying event to shed light on the baryon-to-meson ratio enhancement observed at intermediate transverse momentum (p(T)) in high multiplicity pp and p-Pb collisions. Hard scatterings are selected on an event by-event basis with jets reconstructed with the anti-k(T) algorithm using charged particles. The production of strange particles associated with jets p(T,jet)(ch) > 10 and p(T,jet)(ch) > 20 GeV/c in p-Pb collisions, and with jet p(T,jet)(ch) > 10 GeV/c in pp collisions is reported as a function of p(T). Its dependence on angular distance from the jet axis, R(V-0, jet), for jets with p(T,jet)(ch) > 10 GeV/c in p-Pb collisions is reported as well. The p(T)-differential production spectra of strange particles associated with jets are found to be harder compared to that in the underlying event and both differ from the inclusive measurements. In events containing a jet, the density of the V-0 particles in the underlying event is found to be larger than the density in the minimum bias events. The Lambda/K-S(0) ratio associated with jets in p-Pb collisions is consistent with the ratio in pp collisions and follows the expectation of jets fragmenting in vacuum. On the other hand, this ratio within jets is consistently lower than the one obtained in the underlying event and it does not show the characteristic enhancement of baryons at intermediate p(T) often referred to as "baryon anomaly" in the inclusive measurements. (c) 2022 European Organization for Nuclear Research, ALICE. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).

Czech name

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Czech description

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Type

J_imp - 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

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physics Letters B

ISSN

0370-2693

e-ISSN

1873-2445

Volume of the periodical

827

Issue of the periodical within the volume

Aug

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

15

Pages from-to

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UT code for WoS article

000820935000035

EID of the result in the Scopus database

2-s2.0-85125843993