Enhanced production of multi-strange hadrons in high-multiplicity proton-proton collisions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F17%3A00488769" target="_blank" >RIV/61389005:_____/17:00488769 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/17:00488769 RIV/68407700:21340/17:00318535

Result on the web

<a href="http://dx.doi.org/10.1038/NPHYS4111" target="_blank" >http://dx.doi.org/10.1038/NPHYS4111</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/NPHYS4111" target="_blank" >10.1038/NPHYS4111</a>

Result language

angličtina

Original language name

Enhanced production of multi-strange hadrons in high-multiplicity proton-proton collisions

Original language description

At sufficiently high temperature and energy density, nuclear matter undergoes a transition to a phase in which quarks and gluons are not confined: the quark-gluon plasma (QGP)(1). Such an exotic state of strongly interacting quantum chromodynamics matter is produced in the laboratory in heavy nuclei high-energy collisions, where an enhanced production of strange hadrons is observed(2-6). Strangeness enhancement, originally proposed as a signature of QGP formation in nuclear collisions(7), is more pronounced for multi-strange baryons. Several effects typical of heavy-ion phenomenology have been observed in high-multiplicity proton-proton (pp) collisions(8,9), but the enhanced production of multi-strange particles has not been reported so far. Here we present the first observation of strangeness enhancement in high-multiplicity proton-proton collisions. We find that the integrated yields of strange and multi-strange particles, relative to pions, increases significantly with the event charged-particle multiplicity. The measurements are in remarkable agreement with the p-Pb collision results(10,11), indicating that the phenomenon is related to the final system created in the collision. In high-multiplicity events strangeness production reaches values similar to those observed in Pb-Pb collisions, where a QGP is formed.

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

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

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Nature Physics

ISSN

1745-2473

e-ISSN

—

Volume of the periodical

13

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

535-539

UT code for WoS article

000402604200010

EID of the result in the Scopus database

2-s2.0-85019032501