Investigation of the Σ0 Production Mechanism in p(3.5 GeV)+p Collisions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00583170" target="_blank" >RIV/61389005:_____/24:00583170 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1140/epja/s10050-023-01214-1" target="_blank" >https://doi.org/10.1140/epja/s10050-023-01214-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epja/s10050-023-01214-1" target="_blank" >10.1140/epja/s10050-023-01214-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of the Σ0 Production Mechanism in p(3.5 GeV)+p Collisions

Popis výsledku v původním jazyce

The production of Σ hyperons in proton proton collisions at a beam kinetic energy of 3.5 GeV impinging on a liquid hydrogen target was investigated using data collected with the HADES setup. The total production cross section is found to be σ(pK+Σ) = 17.7 ± 1.7 (stat) ± 1.6 (syst) µb. Differential cross section distributions of the exclusive channel pp→ pK+Σ were analyzed in the center-of-mass, Gottfried–Jackson and helicity reference frames for the first time at the excess energy of 556 MeV. The data support the interplay between pion and kaon exchange mechanisms and clearly demonstrate the contribution of interfering nucleon resonances decaying to K +Σ . The Bonn–Gatchina partial wave analysis was employed to analyse the data. Due to the limited statistics, it was not possible to obtain an unambiguous determination of the relative contribution of intermediate nucleon resonances to the final state. However nucleon resonances with masses around 1.710 GeV / c 2 (N ∗(1710)) and 1.900 GeV / c 2 (N ∗(1900) or Δ ∗(1900)) are preferred by the fit.

Název v anglickém jazyce

Investigation of the Σ0 Production Mechanism in p(3.5 GeV)+p Collisions

Popis výsledku anglicky

The production of Σ hyperons in proton proton collisions at a beam kinetic energy of 3.5 GeV impinging on a liquid hydrogen target was investigated using data collected with the HADES setup. The total production cross section is found to be σ(pK+Σ) = 17.7 ± 1.7 (stat) ± 1.6 (syst) µb. Differential cross section distributions of the exclusive channel pp→ pK+Σ were analyzed in the center-of-mass, Gottfried–Jackson and helicity reference frames for the first time at the excess energy of 556 MeV. The data support the interplay between pion and kaon exchange mechanisms and clearly demonstrate the contribution of interfering nucleon resonances decaying to K +Σ . The Bonn–Gatchina partial wave analysis was employed to analyse the data. Due to the limited statistics, it was not possible to obtain an unambiguous determination of the relative contribution of intermediate nucleon resonances to the final state. However nucleon resonances with masses around 1.710 GeV / c 2 (N ∗(1710)) and 1.900 GeV / c 2 (N ∗(1900) or Δ ∗(1900)) are preferred by the fit.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal A

ISSN

1434-6001

e-ISSN

1434-601X

Svazek periodika

60

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

18

Kód UT WoS článku

001152850600001

EID výsledku v databázi Scopus

2-s2.0-85183588012