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

Adam, J.; Adamová, Dagmar; Bielčík, J.; Bielčíková, Jana; Broz, M.; Čepila, J.; Contreras, J. G.; Eyyubova, G.; Ferencei, Jozef; Horák, D.; Křížek, Filip; Kučera, Vít; Mareš, Jiří A.; Petráček, V.; Pospíšil, Jan; Šumbera, Michal; Vaňát, Tomáš; Závada, Petr

doi:https://dx.doi.org/10.1038/NPHYS4111

Počet záznamů: 1

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

1.

SYSNO ASEP	0488769
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Enhanced production of multi-strange hadrons in high-multiplicity proton-proton collisions
Tvůrce(i)	Adam, J. (CZ) Adamová, Dagmar (UJF-V)_{RID, ORCID, SAI} Bielčík, J. (CZ) Bielčíková, Jana (UJF-V)_{RID, ORCID, SAI} Broz, M. (CZ) Čepila, J. (CZ) Contreras, J. G. (CZ) Eyyubova, G. (CZ) Ferencei, Jozef (UJF-V)_RID Horák, D. (CZ) Křížek, Filip (UJF-V)_{RID, ORCID, SAI} Kučera, Vít (UJF-V)_RID Mareš, Jiří A. (FZU-D)_{RID, ORCID} Petráček, V. (CZ) Pospíšil, Jan (UJF-V) Šumbera, Michal (UJF-V)_{RID, ORCID, SAI} Vaňát, Tomáš (UJF-V)_{ORCID, SAI} Závada, Petr (FZU-D)_{RID, ORCID}
Celkový počet autorů	1003
Zdroj.dok.	Nature Physics. - : Nature Publishing Group - ISSN 1745-2473 Roč. 13, č. 6 (2017), s. 535-539
Poč.str.	10 s.
Forma vydání	Tištěná - P
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	ALICE collaboration ; heavy ion collisions ; multiplicity
Vědní obor RIV	BG - Jaderná, atomová a mol. fyzika, urychlovače
Obor OECD	Nuclear physics
Vědní obor RIV – spolupráce	Fyzikální ústav - Elementární částice a fyzika vys. energií
CEP	LG15052 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
Institucionální podpora	FZU-D - RVO:68378271 ; UJF-V - RVO:61389005
UT WOS	000402604200010
EID SCOPUS	85019032501
DOI	10.1038/NPHYS4111
Anotace	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.
Pracoviště	Ústav jaderné fyziky
Kontakt	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Rok sběru	2018

Počet záznamů: 1