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In mesoscopic systems with spin-orbit coupling, spin-injection into quantum dots at zero magnetic field is expected under a wide range of conditions. However, up to now, a viable approach for experimentally identifying such injection has…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Mark S. Rudner , Emmanuel I. Rashba

We have computed the second Fourier sine coefficient of the longitudinal spin polarization, $\langle P_{z} \sin 2(\phi_{p} - \Psi_{2}) \rangle$, as a function of multiplicity or centrality in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV…

Nuclear Theory · Physics 2025-09-03 Cong Yi , Shuo Fang , Dong-Lin Wang , Shi Pu

We perform a systematic study of the spin polarization of hyperons in heavy-ion collisions using the MUSIC hydrodynamic model with A Multi-Phase Transport (AMPT) pre-equilibrium dynamics. Our model calculations nicely describe the measured…

Nuclear Theory · Physics 2021-02-10 Baochi Fu , Kai Xu , Xu-Guang Huang , Huichao Song

Since the first surprising results on the spin structure of the proton by the EMC experiment in the late 1980s, much progress has been made in understanding the origin of the proton spin. However, the sea quark contribution to the proton…

High Energy Physics - Experiment · Physics 2023-09-26 Yi Yu

We discuss Lambda polarization in semi-inclusive proton-proton collisions, with one of the protons longitudinally polarized. The hyperfine interaction responsible for the $\Delta$-$N$ and $\Sigma$-$\Lambda$ mass splittings gives rise to…

High Energy Physics - Phenomenology · Physics 2010-02-17 C. Boros , J. T. Londergan , A. W. Thomas

Estimates for longitudinal spin asymmetries which single out new polarized nucleon structure functions in deeply inelastic charged current interactions at HERA energies are given, exploiting their interpretation in terms of polarized quark…

High Energy Physics - Phenomenology · Physics 2009-10-28 M. Anselmino , P. Gambino , J. Kalinowski

We study the spin-polarization mechanism in the highly dense nuclear matter with the relativistic mean-field approach. In the relativistic Hartree-Fock framework we find that there are two kinds of spin-spin interaction channels, which are…

Nuclear Theory · Physics 2009-11-06 Tomoyuki Maruyama , Toshitaka Tatsumi

We consider models for the spin transfers to $\Lambda$ and $\bar{\Lambda}$ hyperons produced in lepton-nucleon deep-inelastic scattering. We make predictions for longitudinal $\Lambda$ and $\bar{\Lambda}$ spin transfers for the COMPASS…

High Energy Physics - Phenomenology · Physics 2008-11-26 John Ellis , Aram Kotzinian , Dmitry Naumov , Mikhail Sapozhnikov

A theory of dynamic polarization of the nuclear spin system via optically-oriented charge carriers in lead halide perovskites is developed and compared with the experiments performed on a FA$_{0.9}$Cs$_{0.1}$PbI$_{2.8}$Br$_{0.2}$ crystal.…

Mesoscale and Nanoscale Physics · Physics 2026-02-10 Mladen Kotur , Pavel S. Bazhin , Kirill V. Kavokin , Nataliia E. Kopteva , Dmitri R. Yakovlev , Dennis Kudlacik , Manfred Bayer

Polarization of $\Lambda$ hyperons and their antiparticles is calculated in a 3+1 dimensional viscous hydrodynamic model with initial state from UrQMD hadron/string cascade. We find that, along with recent results from STAR, the mean…

Nuclear Theory · Physics 2018-03-14 Iu. Karpenko , F. Becattini

We investigate the hyperon polarization and its relation with the directed flow of the quark-gluon plasma (QGP) in non-central Au+Au collisions at $\sqrt{s_{\textrm{NN}}} = 27$ GeV. A modified 3-dimensional (3D) Glauber model is developed…

Nuclear Theory · Physics 2023-12-11 Ze-Fang Jiang , Xiang-Yu Wu , Shanshan Cao , Ben-Wei Zhang

Dynamic nuclear polarisation, which transfers the spin polarisation of electrons to nuclei, is routinely applied to enhance the sensitivity of nuclear magnetic resonance; it is also critical in spintronics, particularly when spin…

We compute the $\Lambda$ and $\overline{\Lambda}$ global polarizations in semi-central heavy-ion collisions using the core-corona model where the source of $\Lambda$'s and $\overline{\Lambda}$'s is taken as consisting of a high-density core…

High Energy Physics - Phenomenology · Physics 2022-03-28 Alejandro Ayala , Isabel Domínguez , Ivonne Maldonado , María Elena Tejeda-Yeomans

Recent precision spin structure data from Jefferson Lab have significantly advanced our knowledge of nucleon structure in the valence quark (high-$x$) region and improved our understanding of higher-twist effects, spin sum rules and…

Nuclear Experiment · Physics 2007-05-23 Jian-ping Chen

We present an analysis of the longitudinal $\bar \Lambda_0$ polarization in ultra-relativistic heavy-ion collisions. The polarization of $\bar \Lambda_0$'s coming from the decay chain $\bar{\Xi}\to \bar{\Lambda}_0+\pi$ exhibits a very well…

High Energy Physics - Phenomenology · Physics 2009-11-10 G. Herrera , J. Magnin , L. M. Montaño

We develop a theoretical framework to study the feed-down effect of higher-lying strange baryons on the spin polarization of the $\Lambda$ hyperon. In this framework, we consider two-body decays through strong, electromagnetic, and weak…

Nuclear Theory · Physics 2019-08-02 Xiao-Liang Xia , Hui Li , Xu-Guang Huang , Huan Zhong Huang

While jet quenching in relativistic heavy-ion collisions has been extensively studied over decades, the polarization of quenched hadrons has rarely been discussed. It has recently been proposed that the correlations of dihadron polarization…

High Energy Physics - Phenomenology · Physics 2023-12-12 Xiaowen Li , Zhao-Xuan Chen , Shanshan Cao , Shu-Yi Wei

I discuss recent results from Jefferson Lab on the measurement of inclusive spin structure functions in the nucleon resonance region using polarized electron beams and polarized targets. Results on the first moment of the spin structure…

High Energy Physics - Phenomenology · Physics 2008-11-26 Volker D. Burkert

The STAR collaboration at the Relativistic Heavy Ion Collider is using polarized proton beams at sqrt{s} = 200 GeV to study the spin structure of the proton. The first results for the double spin helicity dependence of inclusive jet…

High Energy Physics - Experiment · Physics 2008-11-26 J. Sowinski

High yield of strange particle production per central collision in nucleus-nucleus collisions at RHIC and high statistics data set from STAR experiment allow us to measure \Lambda\Lambda correlations. The \Lambda\Lambda correlation…

High Energy Physics - Experiment · Physics 2019-08-13 Neha Shah