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Электронный каталог: Aboona, B. E. - Imaging Nuclear Shape Through Anisotropic and Radial Flow in High-Energy Heavy-Ion Collisions
Aboona, B. E. - Imaging Nuclear Shape Through Anisotropic and Radial Flow in High-Energy Heavy-Ion Collisions
Статья
Автор: Aboona, B. E.
Reports on Progress in Physics: Imaging Nuclear Shape Through Anisotropic and Radial Flow in High-Energy Heavy-Ion Collisions
б.г.
ISBN отсутствует
Автор: Aboona, B. E.
Reports on Progress in Physics: Imaging Nuclear Shape Through Anisotropic and Radial Flow in High-Energy Heavy-Ion Collisions
б.г.
ISBN отсутствует
На полку
Статья
Aboona, B.E.
Imaging Nuclear Shape Through Anisotropic and Radial Flow in High-Energy Heavy-Ion Collisions / B.E.Aboona, G.Agakishiev, A.Aitbayev, A.Aparin, G.S.Averichev, T.G.Dedovich, A.Kechechyan, A.A.Korobitsin, R.Lednicky, V.B.Luong, E.Nedorezov, Y.Panebratsev, O.V.Rogachevsky, E.Shahaliev, A.Timofeev, M.V.Tokarev, S.Vokal, [a.o.]. – Text : electronic // Reports on Progress in Physics. – 2025. – Vol. 88, No. 10. – P. 108601. – URL: https://doi.org/10.1088/1361-6633/ae0fc3. – Bibliogr.: 83.
Most atomic nuclei exhibit ellipsoidal shapes characterized by quadrupole deformation β&&sub(2) and triaxiality γ, and sometimes even a pear-like octupole deformation β&sub(3). The STAR experiment introduced a new ‘imaging-by-smashing’ technique ((STAR Collaboration) 2024 Nature 635 67; Jia 2025 Rep. Prog. Phys. 88 092301) to image the nuclear global shape by colliding nuclei at ultra-relativistic speeds and analyzing outgoing debris. Features of nuclear shape manifest in collective observables like anisotropic flow vn and radial flow via mean transverse momentum [p&sub(T)]. We present new measurements of the variances of vn (n = 2, 3, and 4) and [p&sub(T)], and the covariance of v*2&sub(n) with [p&sub(T)], in collisions of highly deformed *2*3*8U and nearly spherical *1*9*7Au. Ratios of these observables between the two systems effectively suppress common final-state effects, isolating the strong impact of uranium’s deformation. By comparing results with state-of-the-art hydrodynamic model calculations, we extract β&sub(2U) and γ&sub(U) values consistent with those deduced from low-energy nuclear structure measurements. Measurements of v3 and its correlation with [p&sub(T)] also provide the first experimental suggestion of a possible octupole deformation for *2*3*8U. These findings provide significant support for using high-energy collisions to explore nuclear shapes on femtosecond timescales, with implications for both nuclear structure and quark-gluon plasma studies.
ОИЯИ = ОИЯИ (JINR)2025
Aboona, B.E.
Imaging Nuclear Shape Through Anisotropic and Radial Flow in High-Energy Heavy-Ion Collisions / B.E.Aboona, G.Agakishiev, A.Aitbayev, A.Aparin, G.S.Averichev, T.G.Dedovich, A.Kechechyan, A.A.Korobitsin, R.Lednicky, V.B.Luong, E.Nedorezov, Y.Panebratsev, O.V.Rogachevsky, E.Shahaliev, A.Timofeev, M.V.Tokarev, S.Vokal, [a.o.]. – Text : electronic // Reports on Progress in Physics. – 2025. – Vol. 88, No. 10. – P. 108601. – URL: https://doi.org/10.1088/1361-6633/ae0fc3. – Bibliogr.: 83.
Most atomic nuclei exhibit ellipsoidal shapes characterized by quadrupole deformation β&&sub(2) and triaxiality γ, and sometimes even a pear-like octupole deformation β&sub(3). The STAR experiment introduced a new ‘imaging-by-smashing’ technique ((STAR Collaboration) 2024 Nature 635 67; Jia 2025 Rep. Prog. Phys. 88 092301) to image the nuclear global shape by colliding nuclei at ultra-relativistic speeds and analyzing outgoing debris. Features of nuclear shape manifest in collective observables like anisotropic flow vn and radial flow via mean transverse momentum [p&sub(T)]. We present new measurements of the variances of vn (n = 2, 3, and 4) and [p&sub(T)], and the covariance of v*2&sub(n) with [p&sub(T)], in collisions of highly deformed *2*3*8U and nearly spherical *1*9*7Au. Ratios of these observables between the two systems effectively suppress common final-state effects, isolating the strong impact of uranium’s deformation. By comparing results with state-of-the-art hydrodynamic model calculations, we extract β&sub(2U) and γ&sub(U) values consistent with those deduced from low-energy nuclear structure measurements. Measurements of v3 and its correlation with [p&sub(T)] also provide the first experimental suggestion of a possible octupole deformation for *2*3*8U. These findings provide significant support for using high-energy collisions to explore nuclear shapes on femtosecond timescales, with implications for both nuclear structure and quark-gluon plasma studies.
ОИЯИ = ОИЯИ (JINR)2025
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