Spin alignment of vector mesons by glasma fields

Kumar, Avdhesh; Müller, Berndt; Yang, Di-Lun

doi:10.1103/physrevd.108.016020

Cited by 22 publications

(7 citation statements)

References 131 publications

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“…In particular, the glasma effect may result in large spin alignment of vector mesons at low momentum due to the dominant longitudinal fields that intrinsically generate anisotropic spin correlations. The estimated result is qualitatively consistent with the measurements at LHC, whereas the magnitude of such an early time effect could be damped by the spin relaxation of quarks in the QGP phase [92] or be further modified by the turbulent chromo-electromagnetic fields in the anisotropic QGP [89]. See also Ref.…”

Section: Introductionsupporting

confidence: 88%

“…[79] for a review), the spin alignment from the spin correlation generated by background chromo-electromagnetic fields, such as the turbulent chromo-electromagnetic fields induced by Weibel-type instabilities in the anisotropic QGP [80][81][82] or glasma fields in the color-glass-condensate effective theory [83][84][85][86][87][88], has been investigated in Refs. [89][90][91][92]. In particular, the glasma effect may result in large spin alignment of vector mesons at low momentum due to the dominant longitudinal fields that intrinsically generate anisotropic spin correlations.…”

Section: Introductionmentioning

confidence: 99%

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Quarkonium Production in Heavy Ion Collisions: From Open Quantum System to Transport Equation

Yao

et al. 2021

Nuclear Physics A

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Section: Introductionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Quarkonium Production in Heavy Ion Collisions: From Open Quantum System to Transport Equation

Yao

et al. 2021

Nuclear Physics A

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“…Replacing and with and , respectively, and inserting Eq. (38) into Eq. ( 29), we obtain the distribution function…”

Section: E E Ementioning

confidence: 99%

Revisiting the spin effects induced by thermal vorticity*

Gao 高,

Yang 杨

2024

Chinese Phys. C

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We revisit the spin effects induced by thermal vorticity by calculating themdirectly from the spin-dependent distribution functions. For the spin-1/2 particles, we give the polarizationup to the first order of thermal vorticity and compare it with the usual result calculated from the spin vector.For the spin-1 particles, we find that all the non-diagonal elements vanish and there is no spin alignment up the first order of thermal vortcity. We present the spin alignment at second-order contribution from thermal vorticity.We also find that the spin effects for both Dirac and vector particles will receive extra contributionwhen the spin direction is associated with the particle's momentum. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

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“…Theoretical researchers have developed a quark coalescence model for explaining the contribution of the vorticity and magnetic field [11,12]. Furthermore, other physical mechanisms also contribute to the spin alignment, such as turbulent color fields [13], local vorticity [14], glasma fields [15], and gradient corrections in the vector-meson medium [16,17].…”

Section: Introductionmentioning

confidence: 99%

Spin alignment of vector mesons from quark dynamics in a rotating medium*

Wei

Huang

2023

Chinese Phys. C

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Vorticities in heavy-ion collisions (HICs) are supposed to induce spin alignment and polarization phenomena of quarks and mesons. In this work, we analyze the spin alignment of vector mesons $\phi$ and $\rho$ induced by rotation from quark dynamics in the framework of the Nambu-Jona-Lasinio (NJL) model. The rotating angular velocity induces mass splitting of spin components for vector $\phi,\rho$ mesons $M_{\phi,\rho}(\Omega)\simeq M_{\phi,\rho}(\Omega=0)-s_{z}\Omega$. This behavior contributes to the spin alignment of vector mesons $\phi,\rho$ in an equilibrium medium and naturally explains the negative deviation of $\rho_{00}-1/3$ for vector mesons. Incidentally, the positive deviation of $\rho_{00}-1/3$ under the magnetic field can also be easily understood from quark dynamics. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

show abstract

Spin alignment of vector mesons by glasma fields

Cited by 22 publications

References 131 publications

Quarkonium Production in Heavy Ion Collisions: From Open Quantum System to Transport Equation

Quarkonium Production in Heavy Ion Collisions: From Open Quantum System to Transport Equation

Revisiting the spin effects induced by thermal vorticity*

Spin alignment of vector mesons from quark dynamics in a rotating medium*

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