Measurement of 4ΛH and 4ΛHe binding energy in Au + Au collisions at √sNN= 3 GeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00566888" target="_blank" >RIV/61389005:_____/22:00566888 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.physletb.2022.137449" target="_blank" >https://doi.org/10.1016/j.physletb.2022.137449</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2022.137449" target="_blank" >10.1016/j.physletb.2022.137449</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of 4ΛH and 4ΛHe binding energy in Au + Au collisions at √sNN= 3 GeV

Popis výsledku v původním jazyce

Measurements of mass and Lambda binding energy of H-4(Lambda) and He-4(Lambda) in Au+Au collisions at root s(NN) = 3 GeV are presented, with an aim to address the charge symmetry breaking (CSB) problem in hypernuclei systems with atomic number A = 4. The Lambda binding energies are measured to be 2.22 +/- 0.06(stat.)+/- 0.14(syst.) MeV and 2.38 +/- 0.13(stat.)+/- 0.12(syst.) MeV for H-4(Lambda) and He-4(Lambda), respectively. The measured Lambda binding-energy difference is 0.16 +/- 0.14(stat.) +/- 0.10(syst.) MeV for ground states. Combined with the gamma-ray transition energies, the binding-energy difference for excited states is -0.16 +/- 0.14(stat.) f 0.10(syst.) MeV, which is negative and comparable to the value of the ground states within uncertainties. These new measurements on the Lambda binding-energy difference in A = 4 hypernuclei systems are consistent with the theoretical calculations that result in Lambda B-Lambda(4) (1(ex)(c)(+)) approximate to -Delta B-Lambda(4) (0(g.s)(+)) < 0 and present a new method for the study of CSB effect using relativistic heavy-ion collisions.

Název v anglickém jazyce

Measurement of 4ΛH and 4ΛHe binding energy in Au + Au collisions at √sNN= 3 GeV

Popis výsledku anglicky

Measurements of mass and Lambda binding energy of H-4(Lambda) and He-4(Lambda) in Au+Au collisions at root s(NN) = 3 GeV are presented, with an aim to address the charge symmetry breaking (CSB) problem in hypernuclei systems with atomic number A = 4. The Lambda binding energies are measured to be 2.22 +/- 0.06(stat.)+/- 0.14(syst.) MeV and 2.38 +/- 0.13(stat.)+/- 0.12(syst.) MeV for H-4(Lambda) and He-4(Lambda), respectively. The measured Lambda binding-energy difference is 0.16 +/- 0.14(stat.) +/- 0.10(syst.) MeV for ground states. Combined with the gamma-ray transition energies, the binding-energy difference for excited states is -0.16 +/- 0.14(stat.) f 0.10(syst.) MeV, which is negative and comparable to the value of the ground states within uncertainties. These new measurements on the Lambda binding-energy difference in A = 4 hypernuclei systems are consistent with the theoretical calculations that result in Lambda B-Lambda(4) (1(ex)(c)(+)) approximate to -Delta B-Lambda(4) (0(g.s)(+)) < 0 and present a new method for the study of CSB effect using relativistic heavy-ion collisions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear 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

2022

Kód důvěrnosti údajů

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

Název periodika

Physics Letters. B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

834

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

137449

Kód UT WoS článku

000898596700001

EID výsledku v databázi Scopus

2-s2.0-85139207053