Renormalized quarkonium

We use the method of double pole QCD sum rule which is basically a fit with two exponentials of the correlation function, where we can extract the masses and decay constants of mesons as a function of the Borel mass. We apply this method to study the mesons: ρ(1S, 2S), ψ(1S, 2S), Υ(1S, 2S) and ψt(1S, 2S). We also present predictions for the toponiuns masses ψt(1S, 2S) of m(1S) = 357 GeV and m(2S) = 374 GeV.

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“…This result is not predicted by potential models and the authors of Ref. [11] suggest that the Υ(5S) could be a tetraquark or molecule state.…”

Section: Introductionmentioning

confidence: 43%

“…This condition is directly related with the expression of decay constant obtained from potential models [10][11][12] is proportional to the meson wave function at the origin. As the meson radius increases with excitation, the probability of finding its quarks at the origin declines with the excitation [13].…”

Section: Introductionmentioning

confidence: 99%

The ρ(1S, 2S), ψ(1S, 2S), Υ(1S, 2S) and ψ t (1S, 2S) Mesons in a Double Pole QCD Sum Rule

Sousa

Silva

2016

Braz J Phys

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“…The spinor structure is included in the potential V 12 (r), which accounts for the static interaction in the heavy quark limit, m Q , mQ p, implying VQ Q (r) → σQ Q r forQQ states (from charmonium data σQ Q ∼ 4.5fm −2 [9]). …”

Section: Two Body Dynamics With Linear Potential and Regge Fitsmentioning

confidence: 99%

Excited Hadrons and Quark--Hadron Duality

Arriola¹,

Masjuan²,

Broniowski³

2017

Acta Phys. Pol. B Proc. Suppl.

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We review how Quark-Hadron Duality (QHD) for (u,d) flavors at high energies and in the scaling regime suggests a radial and angular behaviour of mesonic and baryonic resonance masses of the Regge formThe radial mass dependence is asymptotically consistent with a common two-body dynamics for mesons and baryons in terms of the quark-antiquark (qq) and quark-diquark (qD) degrees of freedom, respectively. This formula is validated phenomenologically within an uncertainty determined by half the width of the resonances, ∆M 2 nJ ∼ Γ nJ M nJ . With this error prescription we find from the non-strange PDG hadrons different radial slopes µ

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“…After its discovery, various interpretations, such as conventional charmonium state [2,3], tetraquark state [4][5][6], Λ cΛc baryonium [7,8] and threshold effect [9], were performed. The mechanism of Y (4630) enhancement in Λ cΛc electroproduction was also studied [10].…”

Section: Introductionmentioning

confidence: 99%

Role ofY(4630)in thepp¯→<

et al. 2016

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We investigate the charmed baryon production reaction pp → ΛcΛc in an effective Lagrangian approach. Besides the t-channel D 0 and D * 0 mesons exchanges, the s-channel Y (4630) meson exchange is taken into account. For the total cross sections, the D 0 and D * 0 mesons provide minor background contributions, while the Y (4630) state gives a clear peak structure with the magnitude of 10 µb at center of mass energy 4.63 GeV. Basing on the results, we suggest that the reaction of pp → ΛcΛc can be used to search for the 1 −− charmonium-like Y (4630) state, and our predictions can be tested in future by thePANDA facility.

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Renormalized quarkonium

Cited by 51 publications

References 44 publications

The ρ(1S, 2S), ψ(1S, 2S), Υ(1S, 2S) and ψ t (1S, 2S) Mesons in a Double Pole QCD Sum Rule

The ρ(1S, 2S), ψ(1S, 2S), Υ(1S, 2S) and ψ t (1S, 2S) Mesons in a Double Pole QCD Sum Rule

Excited Hadrons and Quark--Hadron Duality

Role ofY(4630)in thepp¯→<

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