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Study of Λ polarization in relativistic nuclear collisions at sNN=7.7–200 GeV

Karpenko, Iu ; Becattini, F.

The European physical journal. C, Particles and fields, 2017-04, Vol.77 (4) [Periódico revisado por pares]

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Título:
Study of Λ polarization in relativistic nuclear collisions at sNN=7.7–200 GeV
Autor: Karpenko, Iu ; Becattini, F.
Assuntos: Astronomy ; Astrophysics and Cosmology ; Elementary Particles ; Hadrons ; Heavy Ions ; Measurement Science and Instrumentation ; Nuclear Energy ; Nuclear Physics ; Physics ; Physics and Astronomy ; Quantum Field Theories ; Quantum Field Theory ; Regular Article - Theoretical Physics ; String Theory
É parte de: The European physical journal. C, Particles and fields, 2017-04, Vol.77 (4)
Descrição: We present a calculation of the global polarization of Λ hyperons in relativistic Au–Au collisions at RHIC Beam Energy Scan range s NN = 7.7 - 200 GeV with a 3 + 1 -dimensional cascade + viscous hydro model, UrQMD + vHLLE. Within this model, the mean polarization of Λ in the out-of-plane direction is predicted to decrease rapidly with collision energy from a top value of about 2% at the lowest energy examined. We explore the connection between the polarization signal and thermal vorticity and estimate the feed-down contribution to Λ polarization due to the decay of higher mass hyperons.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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