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Exploring the impact of strong-force fields on ϕ-meson spin alignment within a quantum relativistic transport approach.

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Title: Exploring the impact of strong-force fields on ϕ-meson spin alignment within a quantum relativistic transport approach.
Authors: Oliva, Lucia1 (AUTHOR) lucia.oliva@dfa.unict.it
Source: EPJ Web of Conferences. 4/17/2026, Vol. 364, p1-4. 4p.
Subject Terms: *Vector mesons, *Spin polarization, *Quantum chromodynamics, *Transport theory, *Hadrons, *Heavy ion collisions
Abstract: The unexpected pattern of global spin alignment of vector mesons observed in relativistic heavy-ion collisions for different particle species has posed a serious challenge to theoretical interpretation, as it cannot be explained solely by conventional polarization sources such as vorticity and electromagnetic fields. Fluctuations of strong-force fields may be the key to solving this puzzle. In these proceedings, we review our calculations of the spin density matrix for flavorless vector mesons. The large spin alignment observed for ϕ mesons at lower energies may arise from strong-force fields that polarize the strange quarks and antiquarks, which form polarized mesons via coalescence at hadronization. The strength of the effective ϕ field can be inferred from the experimental data on ϕ-meson spin alignment. [ABSTRACT FROM AUTHOR]
Database: Academic Search Index
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  – Url: https://resolver.ebsco.com/c/fiv2js/result?sid=EBSCO:asx&genre=article&issn=21016275&ISBN=&volume=364&issue=&date=20260417&spage=1&pages=1-4&title=EPJ Web of Conferences&atitle=Exploring%20the%20impact%20of%20strong-force%20fields%20on%20%CF%95-meson%20spin%20alignment%20within%20a%20quantum%20relativistic%20transport%20approach.&aulast=Oliva%2C%20Lucia&id=DOI:10.1051/epjconf/202636412002
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  Data: Exploring the impact of strong-force fields on ϕ-meson spin alignment within a quantum relativistic transport approach.
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  Data: <searchLink fieldCode="AR" term="%22Oliva%2C+Lucia%22">Oliva, Lucia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lucia.oliva@dfa.unict.it</i>
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  Data: <searchLink fieldCode="JN" term="%22EPJ+Web+of+Conferences%22">EPJ Web of Conferences</searchLink>. 4/17/2026, Vol. 364, p1-4. 4p.
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  Data: *<searchLink fieldCode="DE" term="%22Vector+mesons%22">Vector mesons</searchLink><br />*<searchLink fieldCode="DE" term="%22Spin+polarization%22">Spin polarization</searchLink><br />*<searchLink fieldCode="DE" term="%22Quantum+chromodynamics%22">Quantum chromodynamics</searchLink><br />*<searchLink fieldCode="DE" term="%22Transport+theory%22">Transport theory</searchLink><br />*<searchLink fieldCode="DE" term="%22Hadrons%22">Hadrons</searchLink><br />*<searchLink fieldCode="DE" term="%22Heavy+ion+collisions%22">Heavy ion collisions</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The unexpected pattern of global spin alignment of vector mesons observed in relativistic heavy-ion collisions for different particle species has posed a serious challenge to theoretical interpretation, as it cannot be explained solely by conventional polarization sources such as vorticity and electromagnetic fields. Fluctuations of strong-force fields may be the key to solving this puzzle. In these proceedings, we review our calculations of the spin density matrix for flavorless vector mesons. The large spin alignment observed for ϕ mesons at lower energies may arise from strong-force fields that polarize the strange quarks and antiquarks, which form polarized mesons via coalescence at hadronization. The strength of the effective ϕ field can be inferred from the experimental data on ϕ-meson spin alignment. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asx&AN=193100580
RecordInfo BibRecord:
  BibEntity:
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      – Type: doi
        Value: 10.1051/epjconf/202636412002
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 4
        StartPage: 1
    Subjects:
      – SubjectFull: Vector mesons
        Type: general
      – SubjectFull: Spin polarization
        Type: general
      – SubjectFull: Quantum chromodynamics
        Type: general
      – SubjectFull: Transport theory
        Type: general
      – SubjectFull: Hadrons
        Type: general
      – SubjectFull: Heavy ion collisions
        Type: general
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      – TitleFull: Exploring the impact of strong-force fields on ϕ-meson spin alignment within a quantum relativistic transport approach.
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            NameFull: Oliva, Lucia
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            – D: 17
              M: 04
              Text: 4/17/2026
              Type: published
              Y: 2026
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              Value: 364
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            – TitleFull: EPJ Web of Conferences
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