Constraints imposed by the partial wave amplitudes on the decays of 
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, 2 mesons

Shastry, Vanamali; Enrico, Trotti,; Giacosa, Francesco

doi:10.1103/physrevd.105.054022

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Phys. Rev. D

2022

DOI: 10.1103/physrevd.105.054022

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Constraints imposed by the partial wave amplitudes on the decays of J=1 , 2 mesons

Vanamali Shastry

Trotti, Enrico

Francesco Giacosa

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Cited by 5 publications

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“…Explicit expression for the polarization tensor of a massive spin-2 particle can be found in Refs. [50,51]. Then, since the tensor 𝜀 𝜌𝜎 is traceless, the whole structure 𝒮…”

mentioning

confidence: 99%

Production of the X(4014) as the Spin-2 Partner of X(3872) in e ⁺ e ⁻ Collisions

Shi,

Baru,

Guo

et al. 2024

Chinese Phys. Lett.

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In 2021, the Belle Collaboration reported the first observation of a new structure in the $\psi(2S) \gamma$ final state produced in the two-photon fusion process. In the hadronic molecule picture, this new structure can be associated with the shallow isoscalar $D^*\bar{D}^*$ bound state and as such is an excellent candidate for the spin-2 partner of the $X(3872)$ with the quantum numbers $J^{PC}=2^{++}$ conventionally named $X_2$. In this work we evaluate the electronic width of this new state and argue that its nature is sensitive to its total width, the experimental measurement currently available being unable to distinguish between different options. Our estimates demonstrate that the planned Super $\tau$-Charm Facility offers a promising opportunity to search for and study this new state in the invariant mass distributions for the final states $J/\psi\gamma$ and $\psi(2S)\gamma$.

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“…Explicit expression for the polarization tensor of a massive spin-2 particle can be found in Refs. [50,51]. Then, since the tensor 𝜀 𝜌𝜎 is traceless, the whole structure 𝒮…”

mentioning

confidence: 99%

Production of the X(4014) as the Spin-2 Partner of X(3872) in e ⁺ e ⁻ Collisions

Shi,

Baru,

Guo

et al. 2024

Chinese Phys. Lett.

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show abstract

Radiative production and decays of the exotic η1′(1855) and its siblings

Shastry

Giacosa

2023

Nuclear Physics A

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From well-known tensor mesons to yet unknown axial-tensor mesons

et al. 2022

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Constraints imposed by the partial wave amplitudes on the decays of J=1 , 2 mesons

Cited by 5 publications

References 72 publications

Production of the X(4014) as the Spin-2 Partner of X(3872) in e ⁺ e ⁻ Collisions

Production of the X(4014) as the Spin-2 Partner of X(3872) in e ⁺ e ⁻ Collisions

Radiative production and decays of the exotic η1′(1855) and its siblings

From well-known tensor mesons to yet unknown axial-tensor mesons

Contact Info

Product

Resources

About

Constraints imposed by the partial wave amplitudes on the decays of J=1 , 2 mesons

Cited by 5 publications

References 72 publications

Production of the X(4014) as the Spin-2 Partner of X(3872) in e + e − Collisions

Production of the X(4014) as the Spin-2 Partner of X(3872) in e + e − Collisions

Radiative production and decays of the exotic η1′(1855) and its siblings

From well-known tensor mesons to yet unknown axial-tensor mesons

Contact Info

Product

Resources

About

Production of the X(4014) as the Spin-2 Partner of X(3872) in e ⁺ e ⁻ Collisions

Production of the X(4014) as the Spin-2 Partner of X(3872) in e ⁺ e ⁻ Collisions