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Rare Decays of Mesons into Vector Light Mesons.

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Τίτλος: Rare Decays of Mesons into Vector Light Mesons.
Συγγραφείς: Galkin, V. O.1 (AUTHOR) galkin@ccas.ru, Sukhanov, I. S.1,2 (AUTHOR) sukhanov.is17@physics.msu.ru
Πηγή: Physics of Atomic Nuclei. 2025 Suppl 4, Vol. 88, pS423-S430. 8p.
Θεματικοί όροι: *Vector mesons, *Quark models, *Overlap integral, *Quantum chromodynamics, Meson decay
Περίληψη: Rare decays of the mesons into vector light mesons are studied in detail within the framework of the relativistic quark model based on the quasipotential approach and quantum chromodynamics. The hadronic matrix elements of the weak current between meson states are calculated with the consistent account of relativistic effects. The invariant form factors that parameterize these matrix elements are obtained as the overlap integrals of the initial and final meson wave functions. Their dependence on the square of the transferred momentum is explicitly determined within the whole accessible kinematic range. A convenient analytical approximation for numerical values of form factors is given. Effects of electroweak physics at short distances and contributions of the intermediate resonances at long distances are taken into account using effective Wilson coefficients. Helicity formalism is employed for the calculation of the differential decay rates and branching fractions of the charm meson into vector light mesons. Reasonable agreement with experimental upper bounds on the rare decay branching fractions is obtained. [ABSTRACT FROM AUTHOR]
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IllustrationInfo
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  Data: Rare Decays of Mesons into Vector Light Mesons.
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  Data: <searchLink fieldCode="AR" term="%22Galkin%2C+V%2E+O%2E%22">Galkin, V. O.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> galkin@ccas.ru</i><br /><searchLink fieldCode="AR" term="%22Sukhanov%2C+I%2E+S%2E%22">Sukhanov, I. S.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> sukhanov.is17@physics.msu.ru</i>
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  Data: <searchLink fieldCode="JN" term="%22Physics+of+Atomic+Nuclei%22">Physics of Atomic Nuclei</searchLink>. 2025 Suppl 4, Vol. 88, pS423-S430. 8p.
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  Data: *<searchLink fieldCode="DE" term="%22Vector+mesons%22">Vector mesons</searchLink><br />*<searchLink fieldCode="DE" term="%22Quark+models%22">Quark models</searchLink><br />*<searchLink fieldCode="DE" term="%22Overlap+integral%22">Overlap integral</searchLink><br />*<searchLink fieldCode="DE" term="%22Quantum+chromodynamics%22">Quantum chromodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Meson+decay%22">Meson decay</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Rare decays of the mesons into vector light mesons are studied in detail within the framework of the relativistic quark model based on the quasipotential approach and quantum chromodynamics. The hadronic matrix elements of the weak current between meson states are calculated with the consistent account of relativistic effects. The invariant form factors that parameterize these matrix elements are obtained as the overlap integrals of the initial and final meson wave functions. Their dependence on the square of the transferred momentum is explicitly determined within the whole accessible kinematic range. A convenient analytical approximation for numerical values of form factors is given. Effects of electroweak physics at short distances and contributions of the intermediate resonances at long distances are taken into account using effective Wilson coefficients. Helicity formalism is employed for the calculation of the differential decay rates and branching fractions of the charm meson into vector light mesons. Reasonable agreement with experimental upper bounds on the rare decay branching fractions is obtained. [ABSTRACT FROM AUTHOR]
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      – Type: doi
        Value: 10.1134/S1063778825602458
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: S423
    Subjects:
      – SubjectFull: Vector mesons
        Type: general
      – SubjectFull: Quark models
        Type: general
      – SubjectFull: Overlap integral
        Type: general
      – SubjectFull: Quantum chromodynamics
        Type: general
      – SubjectFull: Meson decay
        Type: general
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      – TitleFull: Rare Decays of Mesons into Vector Light Mesons.
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              Text: 2025 Suppl 4
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              Y: 2025
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              Value: 88
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