E-viri
Recenzirano
Odprti dostop
-
Adam, J.; Adams, J. R.; Adkins, J. K.; Ashraf, M. U.; Baker, W.; Behera, A.; Bhagat, P.; Bielcikova, J.; Calderón de la Barca Sánchez, M.; Chatterjee, A.; Chattopadhyay, S.; Chen, D.; Chen, X.; Crawford, H. J.; Daugherity, M.; Di Carlo, L.; Eppley, G.; Evdokimov, O.; Fazio, S.; Galatyuk, T.; Geurts, F.; Ghimire, N.; Gupta, A.; Guryn, W.; Han, Y.; He, W.; Herrmann, N.; Holub, L.; Huang, H. Z.; Huang, S. L.; Huang, T.; Jacobs, W. W.; Jin, C.; Ju, X.; Kang, K.; Keane, D.; Khyzhniak, Y. V.; Knospe, A. G.; Ko, H. S.; Landgraf, J. M.; Lebedev, A.; Li, Z.; Liang, X.; Lin, T.; Liu, X.; Lukow, N. S.; Ma, Y. G.; Mallick, D.; Margetis, S.; Mazer, J. A.; Mioduszewski, S.; Mohanty, B.; Mondal, M. M.; Nain, A. S.; Nam, J. D.; Nasim, Md; Nayak, K.; Neff, D.; Nonaka, T.; Nunes, A. S.; Odyniec, G.; Oh, S.; Pak, R.; Pandey, A. K.; Pawlik, B.; Posik, M.; Pruthi, N. K.; Quintero, A.; Racz, C.; Radhakrishnan, S. K.; Reed, R.; Ruan, L.; Schmidke, W. B.; Seck, F-J; Shanmuganathan, P. V.; Shao, M.; Sharma, R.; Sheikh, A. I.; Singh, J.; Solyst, W.; Song, Y.; Srivastava, B.; Stefaniak, M.; Stringfellow, B.; Tarnowsky, T.; Tlusty, D.; Trentalange, S.; Truhlar, T.; Wang, G.; Wang, J. S.; Wang, X.; Wang, Z.; Witt, R.; Wu, J.; Xu, Q. H.; Yang, Y.; Zhang, C.; Zhang, J.; Zhang, Z.; Zhou, C.
Physics letters. B, 09/2022, Letnik: 834Journal Article
Measurements of mass and Λ binding energy of $^{4}_{Λ}$H and $^{4}_{Λ}$He in Au+Au collisions at $\sqrt{s_{NN}}$ = 3 GeV are presented, with an aim to address the charge symmetry breaking (CSB) problem in hypernuclei systems with atomic number A = 4. The Λ 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 $^{4}_{Λ}$H and $^{4}_{Λ}$He, respectively. The measured Λ binding-energy difference is 0.16±0.14(stat.)±0.10(syst.) MeV for ground states. Combined with the γ-ray transition energies, the binding-energy difference for excited states is –0.16±0.14(stat.)±0.10(syst.) MeV, which is negative and comparable to the value of the ground states within uncertainties. These new measurements on the Λ binding-energy difference in A = 4 hypernuclei systems are consistent with the theoretical calculations that result in ΔB$^{4}_{Λ}$($1^{+}_{exc}$) ≈ –ΔB$^{4}_{Λ}$($0^{+}_{g.s.}$) < 0 and present a new method for the study of CSB effect using relativistic heavy-ion collisions.
