Femtoscopic correlations of identical charged pions and kaons in pp collisions at √s=13 TeV with event-shape selection

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00586596" target="_blank" >RIV/61389005:_____/24:00586596 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/24:00586596

Result on the web

<a href="https://doi.org/10.1103/PhysRevC.109.024915" target="_blank" >https://doi.org/10.1103/PhysRevC.109.024915</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.109.024915" target="_blank" >10.1103/PhysRevC.109.024915</a>

Result language

angličtina

Original language name

Femtoscopic correlations of identical charged pions and kaons in pp collisions at √s=13 TeV with event-shape selection

Original language description

Collective behavior has been observed in high-energy heavy-ion collisions for several decades. Collectivity is driven by the high particle multiplicities that are produced in these collisions. At the CERN Large Hadron Collider (LHC), features of collectivity have also been seen in high-multiplicity proton-proton collisions that can attain particle multiplicities comparable to peripheral Pb-Pb collisions. One of the possible signatures of collective behavior is the decrease of femtoscopic radii extracted from pion and kaon pairs emitted from highmultiplicity collisions with increasing pair transverse momentum. This decrease can be described in terms of an approximate transverse mass scaling. In the present work, femtoscopic analyses are carried out by the ALICE Collaboration on charged pion and kaon pairs produced in pp collisions at root s = 13 TeV from the LHC to study possible collectivity in pp collisions. The event-shape analysis method based on transverse sphericity is used to select for spherical versus jetlike events, and the effects of this selection on the femtoscopic radii for both charged pion and kaon pairs are studied. This is the first time this selection method has been applied to charged kaon pairs. An approximate transverse-mass scaling of the radii is found in all multiplicity ranges studied when the difference in the Lorentz boost for pions and kaons is taken into account. This observation does not support the hypothesis of collective expansion of hot and dense matter that should only occur in high-multiplicity events. A possible alternate explanation of the present results is based on a scenario of common emission conditions for pions and kaons in pp collisions for the multiplicity ranges studied.

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

10304 - Nuclear physics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Physical Review C

ISSN

2469-9985

e-ISSN

2469-9993

Volume of the periodical

109

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

21

Pages from-to

024915

UT code for WoS article

001183209900004

EID of the result in the Scopus database

2-s2.0-85186217652