What can we learn about light-meson interactions at electron–positron colliders?

Fang, S. S.; Kubis, Bastian; Kupść, A.

doi:10.1016/j.ppnp.2021.103884

Cited by 19 publications

(10 citation statements)

References 732 publications

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“…[798] Ref. [799] QSR [807] |GG 823,824,825,826,827,828,99]. For example, we depict the π 0 π 0 and K 0 S K 0 S invariant mass spectra of the J/ψ → γπ 0 π 0 and J/ψ → γK 0 S K 0 S decays in Fig.…”

Section: Glueballmentioning

confidence: 99%

“…Tensor glueballs and the f 2 (2340). Besides the scalar glueball, the tensor glueball can also be investigated in the radiative J/ψ decays [819,820,822,823,824,825,826,828,827,99]. There are as many as twelve light isoscalar tensor mesons listed in PDG2020, i.e., f 2 (1270), f 2 (1430), f 2 (1525), f 2 (1565), f 2 (1640), f 2 (1810), f 2 (1910), f 2 (1950), f 2 (2010), f 2 (2150), f 2 (2300), and f 2 (2340); besides, the f J (2200) may also have the quantum number I G J P C = 0 + 2 ++ [3].…”

Section: Glueballmentioning

confidence: 99%

“…In the present review we shall not discuss the tensor glueball in details, but refer to the reviews [3,89,28,29,90,91,94,99,100] for some discussions. We collect as many theoretical predictions on the tensor glueball mass as we can, and summarize them in Fig.…”

Section: Glueballmentioning

confidence: 99%

“…There have been various experimental and theoretical investigations on the glueballs and hybrid mesons in the past fifty years, but the academic community has not formed a common understanding on their nature. We refer to the reviews [3,89,90,91,92,93,94,95,96,97,98,99,100] for their detailed discussions. In this paper we shall briefly review the recent experimental and theoretical results in Sec.…”

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confidence: 99%

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An updated review of the new hadron states

Chen¹,

Chen²,

Liu³

et al. 2022

Preprint

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The past decades witnessed the golden era of hadron physics. Many excited open heavy flavor mesons and baryons have been observed since 2017. We shall provide an updated review of the recent experimental and theoretical progresses in this active field. Besides the conventional heavy hadrons, we shall also review the recently observed open heavy flavor tetraquark states X(2900) and T + cc (3875) as well as the hidden heavy flavor multiquark states X(6900), P cs (4459) 0 , Z cs (3985) − , Z cs (4000) + , and Z cs (4220) + . We will also cover the recent progresses on the glueballs and light hybrid mesons, which are the direct manifestations of the non-Abelian SU (3) gauge interaction of the Quantum Chromodynamics in the low-energy region.

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Section: Glueballmentioning

confidence: 99%

Section: Glueballmentioning

confidence: 99%

Section: Glueballmentioning

confidence: 99%

mentioning

confidence: 99%

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An updated review of the new hadron states

Chen¹,

Chen²,

Liu³

et al. 2022

Preprint

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“…After establishing the formalism we now fit the resulting representations of the kaon form factors to the available data in the time- and spacelike regions. The timelike data are fit with the total Born cross section [ 59 ] multiplied by a correction factor [ 60 – 63 ] to account for final-state radiation (FSR). Sometimes the Sommerfeld–Gamow–Sakharov factor [ 64 – 66 ] is used instead to resum higher orders in , but we checked that those effects are irrelevant for the application to the channel, and smaller than the non-Coulomb corrections contained in .…”

Section: Fits To Datamentioning

confidence: 99%

Kaon electromagnetic form factors in dispersion theory

Stamen¹,

Hariharan²,

Hoferichter

et al. 2022

Eur. Phys. J. C

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The electromagnetic form factors of charged and neutral kaons are strongly constrained by their low-energy singularities, in the isovector part from two-pion intermediate states and in the isoscalar contribution in terms of $$\omega $$ ω and $$\phi $$ ϕ residues. The former can be predicted using the respective $$\pi \pi \rightarrow {{\bar{K}}} K$$ π π → K ¯ K partial-wave amplitude and the pion electromagnetic form factor, while the latter parameters need to be determined from electromagnetic reactions involving kaons. We present a global analysis of time- and spacelike data that implements all of these constraints. The results enable manifold applications: kaon charge radii, elastic contributions to the kaon electromagnetic self energies and corrections to Dashen’s theorem, kaon boxes in hadronic light-by-light (HLbL) scattering, and the $$\phi $$ ϕ region in hadronic vacuum polarization (HVP). Our main results are: $$\langle r^2\rangle _\text {c}=0.359(3)\,\text {fm}^2$$ ⟨ r 2 ⟩ c = 0.359 ( 3 ) fm 2 , $$\langle r^2\rangle _\text {n}=-0.060(4)\,\text {fm}^2$$ ⟨ r 2 ⟩ n = - 0.060 ( 4 ) fm 2 for the charged and neutral radii, $$\epsilon =0.63(40)$$ ϵ = 0.63 ( 40 ) for the elastic contribution to the violation of Dashen’s theorem, $$a_\mu ^{K\text {-box}}=-0.48(1)\times 10^{-11}$$ a μ K -box = - 0.48 ( 1 ) × 10 - 11 for the charged kaon box in HLbL scattering, and $$a_\mu ^\text {HVP}[K^+K^-, \le 1.05\,\text {GeV}]=184.5(2.0)\times 10^{-11}$$ a μ HVP [ K + K - , ≤ 1.05 GeV ] = 184.5 ( 2.0 ) × 10 - 11 , $$a_\mu ^\text {HVP}[K_SK_L, \le 1.05\,\text {GeV}]=118.3(1.5)\times 10^{-11}$$ a μ HVP [ K S K L , ≤ 1.05 GeV ] = 118.3 ( 1.5 ) × 10 - 11 for the HVP integrals around the $$\phi $$ ϕ resonance. The global fit to $${{\bar{K}}} K$$ K ¯ K gives $${{\bar{M}}}_\phi =1019.479(5)\,\text {MeV}$$ M ¯ ϕ = 1019.479 ( 5 ) MeV , $${\bar{ \varGamma }}_\phi =4.207(8)\,\text {MeV}$$ Γ ¯ ϕ = 4.207 ( 8 ) MeV for the $$\phi $$ ϕ resonance parameters including vacuum-polarization effects.

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The ρ(770, 1450) → ωπ contributions for three-body decays $$ B\to {\overline{D}}^{\left(\ast \right)}\omega \pi $$

Ren,

Ma,

Wang

2024

J. High Energ. Phys.

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The decays $$ B\to {\overline{D}}^{\left(\ast \right)}\omega \pi $$ B → D ¯ ∗ ωπ are very important for the investigation of ρ excitations and the test of factorization hypothesis for B meson decays. The $$ {B}^{+}\to {\overline{D}}^{\left(\ast \right)0}\omega {\pi}^{+} $$ B + → D ¯ ∗ 0 ω π + and B0 → D(*)−ωπ+ have been measured by different collaborations but without any predictions for their observables on theoretical side. In this work, we study the contributions of ρ(770, 1450) → ωπ for the cascade decays $$ {B}^{+}\to {\overline{D}}^{\left(\ast \right)0}{\rho}^{+}\to {\overline{D}}^{\left(\ast \right)0}\omega {\pi}^{+} $$ B + → D ¯ ∗ 0 ρ + → D ¯ ∗ 0 ω π + , B0 → D(*)−ρ+ → D(*)−ωπ+ and $$ {B}_s^0\to {D}_s^{\left(\ast \right)-}{\rho}^{+}\to {D}^{\left(\ast \right)-}\omega {\pi}^{+} $$ B s 0 → D s ∗ − ρ + → D ∗ − ω π + . We introduce ρ(770, 1450) → ωπ subprocesses into the distribution amplitudes for ωπ system via the vector form factor Fωπ(s) and then predict the branching fractions for the first time for concerned quasi-two-body decays with ρ(770, 1450) → ωπ, as well as the corresponding longitudinal polarization fractions ΓL/Γ for the cases with the vector $$ {\overline{D}}^{\ast 0} $$ D ¯ ∗ 0 or $$ {D}_{(s)}^{\ast -} $$ D s ∗ − in their final states. The branching fractions of these quasi-two-body decays are predicted at the order of 10−3, which can be detected at the LHCb and Belle-II experiments. The predictions for the decays B0 → D*−ρ(770)+ → D*−ωπ+ and B0 → D*−ρ(1450)+ → D*−ωπ+ agree well with the measurements from Belle Collaboration. In order to avoid the pollution from annihilation Feynman diagrams, we recommend to take the $$ {B}_s^0\to {D}_s^{\ast -}\rho {\left(770,1450\right)}^{+} $$ B s 0 → D s ∗ − ρ 770 1450 + decays, which have only emission diagrams at quark level, to test the factorization hypothesis for B decays.

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What can we learn about light-meson interactions at electron–positron colliders?

Cited by 19 publications

References 732 publications

An updated review of the new hadron states

An updated review of the new hadron states

Kaon electromagnetic form factors in dispersion theory

The ρ(770, 1450) → ωπ contributions for three-body decays $$ B\to {\overline{D}}^{\left(\ast \right)}\omega \pi $$

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