Measurement of H-4(Lambda) and He-4(Lambda) binding energy in Au plus Au collisions at root s(NN )=3 GeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F22%3A00363540" target="_blank" >RIV/68407700:21340/22:00363540 - isvavai.cz</a>
Result on the web
<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>

Result language
angličtina
Original language name
Measurement of H-4(Lambda) and He-4(Lambda) binding energy in Au plus Au collisions at root s(NN )=3 GeV
Original language description
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. (C) 2022 The Author(s). Published by Elsevier B.V.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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