Heavy quarkonium wave functions at the origin and excited heavy quarkonium production via top quark decays at the LHC

Liao, Qi-Li; Xie, Guoqiang

doi:10.1103/physrevd.90.054007

Cited by 12 publications

(60 citation statements)

References 64 publications

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“…As the choice of the new model parameters [37], the calculation results of our paper and [37,48]. [37,48]. [20] is almost equal to Γ(H 0 → B * c )/Γ(H 0 → B c ) = 7.857KeV /5.736KeV = 1.370 in our paper.…”

Section: A Input Parametersmentioning

confidence: 70%

“…N col = 1 for singlets and N col = N 2 − 1 for octets; O H (n) is the nonperturbative matrix element which describes the hadronization of a QQ ′ pair into the observable quark hadron state and is proportional to the transition probability of the perturbative state QQ ′ into the bound state |(QQ ′ )[n] . As for the color-singlet components, the nonperturbative matrix elements can be directly related either to the wave functions at the origin for S-wave states or the first derivative of the wave functions at the origin for P -wave states [18], which can be computed via the potential NRQCD (pNRQCD) [31,44,45] and/or lattice QCD [46] and/or the potential models [37,[47][48][49][50][51]. Although we do not know the exact values of the two decay color-octet matrix elements,…”

Section: Calculation Techniques and Formulationmentioning

confidence: 99%

“…The radial wave function at the origin R |(QQ ′ )[1S] (0) and the first derivative of the radial wave function at the origin R ′ |(QQ ′ )[1P ] (0) relate to the number of active flavor quarks n f , the constituent quark mass of the |(QQ ′ )[n]quarkonium, and the concrete potential models, respectively [37]. Thus, R |(QQ ′ )[1S] (0) and R ′ |(QQ)[1P ] (0) in this paper are adopted in Ref.…”

Section: Calculation Techniques and Formulationmentioning

confidence: 99%

“…Tables II, III, and IV within the B.T. potential [37], where the Higgs total decay with is adopted Γ H = 4.20M eV [54]. If the input parameters of the Ref.…”

Section: A Input Parametersmentioning

confidence: 99%

“…The results are consistent with the results of this paper for S-wave states. As the choice of the new model parameters [37], the calculation results of our paper and [37,48]. [37,48].…”

Section: A Input Parametersmentioning

confidence: 99%

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Heavy P -wave quarkonium production via Higgs decays

Liao

Deng

et al. 2018

Phys. Rev. D

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The production of the heavy quarkonium, i.e., jðcbÞ½ni (or jðbcÞ½ni), jðccÞ½ni, and jðbbÞ½ni-quarkonium [jðQQ 0 Þ½ni-quarkonium for short], through Higgs H 0 boson semiexclusive decays is evaluated within the nonrelativistic quantum chromodynamics (NRQCD) framework, where [n] stands for the production of the two color-singlet S-wave states, jðQQ 0 Þ½ 1 S 0 1 i and jðQQ 0 Þ½ 3 S 1 1 i, the production of the four color-singlet P-wave states, i.e., jðQQ 0 Þ½. Moreover, according to the velocity scaling rule of the NRQCD, the production of the two color-octet components, jðQQ 0 Þg½ 1 S 0 8 i and jðQQ 0 Þg½ 3 S 1 8 i, are also taken into account. The "improved trace technology" to derive the simplified analytic expressions at the amplitude level is adopted, which shall be useful for dealing with these decay channels. If all higher heavy quarkonium states decay completely to the ground states, it should be obtained ΓðH

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Section: A Input Parametersmentioning

confidence: 70%

Section: Calculation Techniques and Formulationmentioning

confidence: 99%

Section: Calculation Techniques and Formulationmentioning

confidence: 99%

“…Tables II, III, and IV within the B.T. potential [37], where the Higgs total decay with is adopted Γ H = 4.20M eV [54]. If the input parameters of the Ref.…”

Section: A Input Parametersmentioning

confidence: 99%

“…The results are consistent with the results of this paper for S-wave states. As the choice of the new model parameters [37], the calculation results of our paper and [37,48]. [37,48].…”

Section: A Input Parametersmentioning

confidence: 99%

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Heavy P -wave quarkonium production via Higgs decays

Liao

Deng

et al. 2018

Phys. Rev. D

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Spectroscopy and annihilation decay widths of charmonium and bottomonium excitations

Mony A,

Dhir

2024

J. Phys. G: Nucl. Part. Phys.

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We study the charmonium (c¯c) and bottomonium (b¯b) spectra, using Cornell potential withadditional constant potential term in a non-relativistic framework, with spin-dependent correctionscorresponding to the spin-spin, spin-orbit, and tensor interactions added perturbatively. We predictthe masses of low-lying and excited states of charmonium and bottomonium up to n = 6 and L = 2.We analyze the radial and orbital Regge trajectories of both the systems and investigate theirdeparture from linearity. Further, we estimate the wave function at the origin and, consequently,predict the decay widths of charmonium and bottomonium states annihilating to leptons andphotons. Also, we investigate the effect of scale dependence of the wave function at the origin andthe strong coupling constant on the predictions of annihilation decay widths. We compare ourpredictions of heavy quarkonium spectra and decay widths with experimental results and othertheoretical models.

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Production of higher excited quarkonium pair at the super Z factory*

Liao 廖,

Jiang 蒋

2024

Chinese Phys. C

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Sizable amounts of massive quarkonium events should be produced through $Z^0$ boson decays at a future super $Z$ factory. Such channels will provide a suitable platform to study the precisely properties of massive quarkonium. We show that sizable amounts of events for pair of the higher excited states quarkonia can also be produced at the super Z factory. Therefore, we make a further study on calculate the exclusive production of pair of the higher excited charmonium, pair of the higher excited bottomonium, and pair of the higher excited $B_c$ mesons via $e^+e^-\to Z^0 \to |(Q\bar{Q^\prime})[n]\rangle + |(Q^\prime \bar{Q})[n']\rangle$ ($Q,~Q^\prime=c$- or $b$-quarks) at the future $Z$ factory under the NRQCD, where the $[n]$/$[n^\prime]$ represents the color-singlet states $[n^1S_0], [n^3S_1],~[n^1P_1]$, and $[^3P_J]$ ($[n]=1,2,3;J=0,1,2$).The differential angle distribution of cross sections $d\sigma/dcos\theta$ is given. For a sound estimate,we discus the uncertainties of total cross sections caused by varying quark masses and the renormalization scale $\mu$. The numerical results show that the future super $Z$ factory should be also a good platform to study the exclusive production of pair of the higher excited massive quarkonium.

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Heavy quarkonium wave functions at the origin and excited heavy quarkonium production via top quark decays at the LHC

Cited by 12 publications

References 64 publications

Heavy P -wave quarkonium production via Higgs decays

Heavy P -wave quarkonium production via Higgs decays

Spectroscopy and annihilation decay widths of charmonium and bottomonium excitations

Production of higher excited quarkonium pair at the super Z factory*

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