The Mass and Current-Meson Coupling Constant of the Exotic X(3872) State from QCD Sum Rules

Sundu, H.

doi:10.19113/sdufbed.25599

Cited by 4 publications

(5 citation statements)

References 24 publications

(45 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From this figure we deduce the result on the meson-current coupling constant and mass in vacuum as presented in Table II. In the case of the mass, our result within the uncertainties is in good agreement with those of [52,64]. On the other hand, the result of the meson-current coupling is smaller than the result in the literature [52].…”

Section: Numerical Analysissupporting

confidence: 91%

“…In the case of the mass, our result within the uncertainties is in good agreement with those of [52,64]. On the other hand, the result of the meson-current coupling is smaller than the result in the literature [52]. It can be checked in the future experiments.…”

Section: Numerical Analysissupporting

confidence: 90%

“…The thermal version of QCD sum rules has been successfully used to study the thermal properties of mesons [33][34][35][36][37][38][39][40][41][42][43][44][45][46] as a reliable and well-established approach. The QCD sum-rules have been also extended to investigate exotic hadrons [47][48][49][50][51][52][53][54][55][56][57][58][59]. In this article we use the Thermal QCD sum rules method for exploration of the X(3872) resonance with quantum numbers J P C = 1 ++ .…”

mentioning

confidence: 99%

See 2 more Smart Citations

Thermal properties of the exotic X(3872) state via QCD sum rule

2018

View full text Add to dashboard Cite

In this work we investigate the X(3872) meson with quantum numbers J P C = 1 ++ in the framework of the thermal QCD sum rules method. We use a diquark-antidiquark current with the corresponding quantum numbers and calculate the two-point correlation function including contributions of non-perturbative condensates up to six dimensions. Analysis of the obtained thermal sum rule allows us to study contributions of a medium to the mass and coupling constant of the X(3872) resonance. Our numerical calculations demonstrate that the mass and the meson-current coupling constant are insensitive to the variation of temperature up to T = 110 M eV , however after this point; they start to fall by increasing the temperature. At deconfinement temperature, the meson-current coupling constants attain roughly to 34% of the vacuum value.

show abstract

Section: Numerical Analysissupporting

confidence: 91%

Section: Numerical Analysissupporting

confidence: 90%

mentioning

confidence: 99%

See 1 more Smart Citation

Thermal properties of the exotic X(3872) state via QCD sum rule

2018

View full text Add to dashboard Cite

show abstract

“…Over the past several decades, many charmonium-like exotic candidates have been announced, such as the scalar fully open-flavor structure X 0 (2900) [6,7], hidden charm-strange scalar meson X(3960) [8,9], scalar X(5568) with four different quark flavors [10,11], axial-vector hidden charmstrange state Z cs (3985) [12][13][14], axial-vector hidden charm X(3872) [15,16], axial-vector charmed-strange state X(4140) [17,18], vector charmed-strange X(4630) [19], vector hidden bottom-strange Y b (10890) [20,21], pseudo-vector meson Z c (3900) and its excited state Z(4430) [22,23], etc.…”

Section: Introductionmentioning

confidence: 99%

Possible Molecular Explanation for the Resonance $Y(4500)$

Süngü

Veliev

Sundu

et al. 2023

Preprint

View full text Add to dashboard Cite

The BESIII collaboration has discovered a new state with hidden charm-strange. Its mass is intriguingly close to the DsD̅s1 threshold and does not have the properties of the charmonium states. Working with the QCD sum rules (QCDSR) approach, we test if the charmonium-like structure Y (4500) , detected in the invariant mass spectrum K+ K-J/ψ may be interpreted as an exotic DsD̅s1 molecular structure with JPC=1--. Considering the contributions of QCD condensates up to operator dimension ten, we estimate the mass and decay constant of Y(4500) resonance. We get mY = (4488.35 ± 11.54) MeV in excellent agreement with the meson mass reported by BESIII and fY=(4.04 ± 0.36) ± 10-3 GeV4. Our findings indicate that a pseudoscalar-axialvector molecule current can well describe this state.

show abstract

“…In the framework of QCD Sum Rules (QCDSR), the mass and current-meson coupling constant of the exotic X(3872) state are computed within the two-point sum rule method using the diquark-antidiquark and molecule interpolating currents [44]. In [45], they studied X(3872) meson with thermal QCDSR method.…”

mentioning

confidence: 99%

X(3872) and its heavy quark spin symmetry partners in QCD sum rules

et al. 2018

View full text Add to dashboard Cite

X(3872) presents many surprises after its discovery more than ten years ago. Understanding its properties is crucial to understand the spectrum of possible exotic mesons. In this work, X(3872) meson and its heavy quark spin symmetry (HQSS) partners (including the mesons in the bottom sector) are studied within the QCD Sum Rules approach using a current motivated by the molecular picture of X(3872). We predict four heavy partners to X(3872) and bottomonium with the masses and J P C quantum numbers. Obtained results are in good agreement with the previous studies and available experimental data within errors. I. INTRODUCTIONDuring the last decade experimental data from Belle, BaBar, BESIII, CDF, D0, LHCb and other collaborations have put some puzzles about the conventional hadron spectrum, i.e., quark-antiquark and three-quarks picture of hadrons. New states (called exotic states) were observed from these experiments and they opened a new era of hadron spectroscopy.The milestone of these exotic states is X(3872). The X(3872) was first observed by Belle Collaboration in 2003 and the production mode was B + → X(3872)K + → J/ψπ + π − K + [1]. It has been also confirmed by the CDF [2], D0 [3], and BaBar [4] collaborations. The current average mass of X(3872) is 3871.69 ± 0.17 MeV and it is only 0.16 MeV below the D 0D * 0 threshold with a less then 1.2 MeV full width [5]. Its quantum numbers were determined by the LHCb Collaboration to be J P C = 1 ++ in 2013 [6]. Its unusual properties presents a puzzle in the meson spectroscopy and up to now there is no consensus about its structure.The natural attempt to investigate X(3872) is using quark model as a cc state. According to quark model, X(3872) is a 2P charmonium state. The mass of this state was obtained as 3947 MeV in [7,8] and 3906 MeV in [9]. In [10] they studied X(3872) resonance as cc = χ c1 (2P ) which sits on the D * 0D0 threshold and has a mass of m(D * 0D0 ) = 3871.81 ± 0.36 MeV. They also suggest a program for experimental research in order to verify their assumption. The other quark model candidates with J P C = 1 ++ are 2 3 P 1 (3925) and 3 3 P 1 (3853) [11,12]. Lattice QCD calculations give 2 3 P 1 (4010) [13] and 2 3 P 1 (4067) [14]. As can be seen, the masses of 2 3 P 1 charmonium state are bigger than the observed state.The other inconsistency with quark model is the J/ψπ + π − and J/ψπ + π − π 0 decays. The combined result for ratio of the decay fractions of X(3872) into J/ψπ + π − and J/ψπ + π − π 0 is [15]In these decays, the pions are produced through the decay of intermediate ρ or ω mesons, respectively. If one considers the differences in phase space between ρ and ω mesons, the production amplitude ratio can be found as [16] | A(J/ψρ) A(J/ψω) | = 0.26 ± 0.007.(2)

show abstract

The Mass and Current-Meson Coupling Constant of the Exotic X(3872) State from QCD Sum Rules

Cited by 4 publications

References 24 publications

Thermal properties of the exotic X(3872) state via QCD sum rule

Thermal properties of the exotic X(3872) state via QCD sum rule

Possible Molecular Explanation for the Resonance $Y(4500)$

X(3872) and its heavy quark spin symmetry partners in QCD sum rules

Contact Info

Product

Resources

About