Поиск :
Личный кабинет :
Электронный каталог: Aboona, B. E. - Hyperon Global Polarization in Isobar Ru+Ru and Zr+Zr Collisions at *%S &sub(NN) = 200 GeV
Aboona, B. E. - Hyperon Global Polarization in Isobar Ru+Ru and Zr+Zr Collisions at *%S &sub(NN) = 200 GeV
Статья
Автор: Aboona, B. E.
Physics Letters B: Hyperon Global Polarization in Isobar Ru+Ru and Zr+Zr Collisions at *%S &sub(NN) = 200 GeV
б.г.
ISBN отсутствует
Автор: Aboona, B. E.
Physics Letters B: Hyperon Global Polarization in Isobar Ru+Ru and Zr+Zr Collisions at *%S &sub(NN) = 200 GeV
б.г.
ISBN отсутствует
На полку
Статья
Aboona, B.E.
Hyperon Global Polarization in Isobar Ru+Ru and Zr+Zr Collisions at *%S &sub(NN) = 200 GeV / 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 // Physics Letters B. – 2025. – Vol. 870. – P. 139891. – URL: https://doi.org/10.1016/j.physletb.2025.139891. – Bibliogr.: 64.
The polarization of *L, *L^-, and *X&sup(+) hyperons along the angular momentum of the system has been measured in isobar collisions of Ru+Ru and Zr+Zr at *%𝑠&sub(NN) = 200 GeV with the STAR detector at RHIC. The polarization dependence on collision centrality exhibits an increasing trend in more peripheral collisions. *L and *L^- polarization dependence on the transverse momentum and pseudorapidity have been investigated, but no significant dependence was observed. The polarizations of *L and *L^- are found to be consistent with each other, indicating little contribution of the spin-magnetic coupling to the measured polarization. Comparison to previously measured polarization in Au+Au collisions show no obvious system size dependence. The results are qualitatively consistent with hydrodynamic calculations including contributions from shear-induced polarization and thermal vorticity. For the first time in heavy-ion collisions, the dependence of the global polarization on the hyperon’s emission azimuthal angle relative to the second-order event plane has been measured, indicating stronger polarization for the in-plane emitted hyperons at the level of 2.4*s significance in 20–50 % centrality. The *X hyperon polarization measurements via polarization transfer analysis yield finite positive values with 2.9*s significance in 20–50 % centrality, slightly larger compared to the inclusive *L polarization.
Спец.(статьи,препринты) = С 343 е2 - Взаимодействие релятивистских ядер с ядрами
Спец.(статьи,препринты) = С 346.5 - К-мезоны и гипероны
ОИЯИ = ОИЯИ (JINR)2025
Aboona, B.E.
Hyperon Global Polarization in Isobar Ru+Ru and Zr+Zr Collisions at *%S &sub(NN) = 200 GeV / 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 // Physics Letters B. – 2025. – Vol. 870. – P. 139891. – URL: https://doi.org/10.1016/j.physletb.2025.139891. – Bibliogr.: 64.
The polarization of *L, *L^-, and *X&sup(+) hyperons along the angular momentum of the system has been measured in isobar collisions of Ru+Ru and Zr+Zr at *%𝑠&sub(NN) = 200 GeV with the STAR detector at RHIC. The polarization dependence on collision centrality exhibits an increasing trend in more peripheral collisions. *L and *L^- polarization dependence on the transverse momentum and pseudorapidity have been investigated, but no significant dependence was observed. The polarizations of *L and *L^- are found to be consistent with each other, indicating little contribution of the spin-magnetic coupling to the measured polarization. Comparison to previously measured polarization in Au+Au collisions show no obvious system size dependence. The results are qualitatively consistent with hydrodynamic calculations including contributions from shear-induced polarization and thermal vorticity. For the first time in heavy-ion collisions, the dependence of the global polarization on the hyperon’s emission azimuthal angle relative to the second-order event plane has been measured, indicating stronger polarization for the in-plane emitted hyperons at the level of 2.4*s significance in 20–50 % centrality. The *X hyperon polarization measurements via polarization transfer analysis yield finite positive values with 2.9*s significance in 20–50 % centrality, slightly larger compared to the inclusive *L polarization.
Спец.(статьи,препринты) = С 343 е2 - Взаимодействие релятивистских ядер с ядрами
Спец.(статьи,препринты) = С 346.5 - К-мезоны и гипероны
ОИЯИ = ОИЯИ (JINR)2025
