Revisiting scalar glueballs

Cheng, Hai-Yang; Chua, Chun-Khiang; Liu, Keh-Fei

doi:10.1103/physrevd.92.094006

Cited by 81 publications

(109 citation statements)

References 112 publications

Supporting

Mentioning

100

Contrasting

Unclassified

Order By: Relevance

“…[32]. This factor arises because in the heavy quark effective theory and in HBChPT the velocities of B 1 and B 2 are the same up to corrections of order O(1/m Q ), which we neglect.…”

Section: Heavy Baryons and Their Strong Decays In The Chiral Quarmentioning

confidence: 99%

See 1 more Smart Citation

Strong decays of exotic and nonexotic heavy baryons in the chiral quark-soliton model

et al. 2017

View full text Add to dashboard Cite

In the large N c limit both heavy and light baryons are described by the universal mean field, which allows us to relate the properties of heavy baryons to light ones. With the only input from the decays of light octet baryons (due to the universality of the chiral mean field), excellent description of strong decays of both charm and bottom sextets is obtained. The parameter-free prediction for the widths of exotic antidecapentaplet (15) baryons is also made. The exotic heavy baryons should be anomalously narrow despite of large phase space available. In particular, the widths of Ω c (3050) and Ω c (3119), interpreted as members of 15-plet, are very small: 0.48 MeV and 1.12 MeV respectivly. This result is in very good agreement with the measurements of the LHCb Collaboration and provides natural and parameter-free explanation of the LHCb observation that Ω c (3050) and Ω c (3119) have anomalously small widths among five recently observed states.

show abstract

“…[32]. This factor arises because in the heavy quark effective theory and in HBChPT the velocities of B 1 and B 2 are the same up to corrections of order O(1/m Q ), which we neglect.…”

Section: Heavy Baryons and Their Strong Decays In The Chiral Quarmentioning

confidence: 99%

“…In Ref. [32] decays of charm sextet Σ c , both of spin 1/2 and 3/2, have been fitted with the help of the formula analogous to (10) in terms of a single coupling g 2 . The updated phenomenological value is presently g 2 = 0.56 with a 5% error.…”

Section: Decay Widths Of Sextet Heavy Baryonsmentioning

confidence: 99%

Strong decays of exotic and nonexotic heavy baryons in the chiral quark-soliton model

et al. 2017

View full text Add to dashboard Cite

show abstract

“…In this paper, according to Ref. [38], we neglect the tiny contribution from the scalar glueball [39] and simplify the mixing form as…”

Section: Physics Of Light Scalar Mesonsmentioning

confidence: 99%

Study of Bc→DS decays in the perturbative QCD approach

Liu

2018

Phys. Rev. D

View full text Add to dashboard Cite

Within the framework of the perturbative QCD approach based on k T factorization, we study 40 B c → DS decay modes in the leading order and leading power, where "S" stands for the light scalar meson. Under two different scenarios (S1 and S2) for the description of scalar mesons, we explore the branching fractions and related CP asymmetries. As a heavy meson consisting of two heavy quarks with different flavor, the light-cone distribution amplitude of the B c meson has not been well defined, and therefore the δ function is adopted. We find that the contributions of emission diagrams are suppressed by the vector decay constants and Cabibbo-Kobayashi-Maskawa elements, and the contributions of annihilation are dominant. After the calculation, we also find that some branching fractions are in the range ½10 −5 ; 10 −4 , which could be measured at the current LHCb experiment, and other decays with smaller branching fractions will be tested at high-energy colliders in the future. Furthermore, some decay modes have large CP asymmetries, but they are unmeasurable currently due to the small branching fractions.

show abstract

“…[17,19], and the combination of Lattice QCD calculations and experimental data for disentangling the glue and qq components of the scalar glueball in Ref. [20]. Lastly, it is profusely produced in the gluon-rich decay of the J/ψ meson.…”

Section: Introductionmentioning

confidence: 99%

Decay modes of the excited pseudoscalar glueball

Eshraim

Schramm

2017

Phys. Rev. D

View full text Add to dashboard Cite

We study three different chiral Lagrangians that describe the two-and three-body decays of an excited pseudoscalar glueball, J P C = 0 * −+ , into light mesons and charmonium states as well as into a scalar and pseudoscalar glueball. We compute the decay channels for an excited pseudoscalar glueball with a mass of 3.7 GeV and consider a ground state pseudoscalar glueball of mass 2.6 GeV, following predictions from lattice QCD simulations. These states and channels are in reach of the ongoing BESIII experiment and the PANDA experiments at the upcoming FAIR facility experiment. We present the resulting decay branching ratios with a parameter-free prediction.

show abstract

Revisiting scalar glueballs

Cited by 81 publications

References 112 publications

Strong decays of exotic and nonexotic heavy baryons in the chiral quark-soliton model

Strong decays of exotic and nonexotic heavy baryons in the chiral quark-soliton model

Study of Bc→DS decays in the perturbative QCD approach

Decay modes of the excited pseudoscalar glueball

Contact Info

Product

Resources

About