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We initiate a holographic study of coupling-dependent heavy ion collisions by analysing for the first time the effects of leading-order, inverse coupling constant corrections. In the dual description, this amounts to colliding gravitational…

High Energy Physics - Theory · Physics 2017-07-20 Sašo Grozdanov , Wilke van der Schee

We consider the momentum distribution and the polarization of an inclusive heavy fermion in a process assumed to arise from standard-model (SM) $s$-channel exchange of a virtual $\gamma$ or $Z$ with a further contribution from physics…

High Energy Physics - Phenomenology · Physics 2018-02-15 B. Ananthanarayan , Saurabh D. Rindani

A novel mathematical treatment is proposed for computing the time evolution of dynamic nuclear polarization processes in the low temperature thermal mixing regime. Without assuming any a priori analytical form for the electron polarization,…

Statistical Mechanics · Physics 2017-08-23 Sonia Colombo Serra , Alberto Rosso , Fabio Tedoldi

A comparison is made between results obtained using smooth initial conditions and event-by-event initial conditions in the hydrodynamical description of relativistic nuclear collisions. Some new results on directed flow are also included.

Radiative polarization of electrons and positrons through the Sokolov-Ternov effect is important for applications in high-energy physics. Radiative spin-polarization is a manifestation of quantum radiation reaction affecting the…

High Energy Physics - Phenomenology · Physics 2018-08-29 D. Seipt , D. Del Sorbo , C. P. Ridgers , A. G. R. Thomas

We investigate the spin alignment of vector mesons arising from locally polarized quarks and anti-quarks (local spin alignment) in heavy-ion collisions. We find that $\rho_{00}\neq 1/3$ does not necessarily signal the global polarization of…

Nuclear Theory · Physics 2021-04-30 Xiao-Liang Xia , Hui Li , Xu-Guang Huang , Huan Zhong Huang

We investigate how the strain-induced nuclear quadrupole interaction influences the degree of nuclear spin polarization in self-assembled quantum dots. Our calculation shows that the achievable nuclear spin polarization in In_{x}Ga_{1-x}As…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Chia-Wei Huang , Xuedong Hu

The possibility of appearance of spin polarized states in symmetric and strongly asymmetric nuclear matter is analyzed within the framework of a Fermi liquid theory with the Skyrme effective interaction. The zero temperature dependence of…

Nuclear Theory · Physics 2007-07-14 A. A. Isayev , J. Yang

Spin correlations of $e^{+}e^{-}$ pair productions of two colliding photons are investigated and explicit expressions for their corresponding probabilities are derived and found to be \textit{energy} (speed) dependent, for initially…

Quantum Physics · Physics 2015-03-17 N. Yongram

Model independent formulae are derived for the polarizations and spin correlations of protons in the final state of $pp \to pp\omega $, taking into consideration all the six threshold partial wave amplitudes $f_1, ..., f_6$ covering $Ss,…

Nuclear Theory · Physics 2010-04-06 G. Ramachandran , Venkataraya , J. balasubramanyam

Polarization and spin effects are useful for probing the Standard Model, in both the electroweak sector and the strong sector, where the spin decomposition of the nucleon is still a hot topic, with important new data on the net…

High Energy Physics - Phenomenology · Physics 2009-09-11 John Ellis

We investigate hydrodynamic effects on the spin polarization of $\Lambda$ hyperons in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV and p+Pb collisions at $\sqrt{s_{NN}} = 8.16$ TeV using the CLVisc hydrodynamic framework. We present…

Nuclear Theory · Physics 2025-09-03 Cong Yi , Xiang-Yu Wu , Jie Zhu , Shi Pu , Guang-You Qin

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

The effects of strong magnetic fields on the inner crust of neutron stars are investigated after taking into account the anomalous magnetic moments of nucleons. Energy spectra and wave functions for protons and neutrons in a uniform…

Astrophysics · Physics 2009-11-10 H. Wen , L. S. Kisslinger , Walter Greiner , G. Mao

Stimulated by the still puzzling competition between spin-singlet and spin-triplet pairing in nuclei, the 3SD1 neutron-proton pairing is investigated in the framework of BCS theory of nuclear matter. The medium polarization effects are…

Nuclear Theory · Physics 2020-02-03 Wenmei Guo , Umberto Lombardo , Peter Schuck

We utilize known exact analytic solutions of perfect fluid hydrodynamics to analytically calculate the polarization of baryons produced in heavy ion collisions. Assuming local thermodynamical equilibrium also for spin degrees of freedom,…

High Energy Physics - Phenomenology · Physics 2020-05-22 Balint Boldizsar , Marton I. Nagy , Mate Csanad

We investigate the hydrodynamic helicity polarization of $\Lambda$ hyperons, defined as the projection of the spin polarization vector along the directions of particle momenta, at RHIC-BES energies by utilizing the relativistic (3+1)D…

High Energy Physics - Phenomenology · Physics 2023-04-19 Cong Yi , Xiang-Yu Wu , Di-Lun Yang , Jian-Hua Gao , Shi Pu , Guang-You Qin

We theoretically study the interplay of spin-orbit and hyperfine interactions in dynamical nuclear polarization in two-electron semiconductor double quantum dots near the singlet $(S)$ - triplet $(T_+)$ anticrossing. The goal of the scheme…

Mesoscale and Nanoscale Physics · Physics 2016-01-20 Marko J. Rančić , Guido Burkard

We show that local parity violation due to chirality imbalance in relativistic nuclear collisions can be revealed by measuring the projection of the polarization vector onto the momentum, i.e. the helicity, of final state baryons. The…

High Energy Physics - Phenomenology · Physics 2021-10-08 F. Becattini , M. Buzzegoli , A. Palermo , G. Prokhorov

We show that the fluctuations in the wounded-nucleon model of the initial stage of relativistic heavy-ion collisions, together with the natural assumption that the forward (backward) moving wounded nucleons emit particles preferably in the…

Nuclear Theory · Physics 2015-03-17 Piotr Bozek , Wojciech Broniowski , Joao Moreira
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