Hybrid States From Constituent Glue Model

Iddir, F.; Semlala, Lahouari

doi:10.1142/s0217751x08042687

Cited by 26 publications

(37 citation statements)

References 56 publications

(6 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When we consider similar admixture of c " cg hybrid state bearing its mass equal to 4.1 GeV given by [50] and 10.5 GeV for b " bg given by [51] yield the leptonic decay widths of Éð3686Þ as 2.376 keV as against the predicted 1.686 keV and that of Çð10355Þ as 0.421 keV as against 0.33 keV obtained for pure 3S state which are now in good agreement with the reported experimental values of 2:35 AE 0:04 keV and 0:443 AE 0:008 keV, respectively. We find the admixture of hybrid state excludes the radiative correction to the leptonic decay widths.…”

Section: Resultsmentioning

confidence: 99%

Leptonic and digamma decay properties ofS-wave quarkonia states

2012

View full text Add to dashboard Cite

Based on Martin-like potential, the masses of quarkonia states and their leptonic decay widths have been reviewed. The hyperfine, spin orbit and tensor interactions are employed to compute the spin splitting of the nS states and the fine splittings of the P and D states. The analysis based on the predicted masses and leptonic decay widths clearly indicates that c ð3686Þ is a mixed state with a 50%-50% admixture of c " c ð2SÞ and the hybrid c " cg in accordance with the suggestion that resolves the À puzzle related to c ð2SÞ. And Çð10355Þ as similar admixture of b " b ð3SÞ with b " bg in accordance with the resolution of Vogel puzzle related to Çð3SÞ state. Analyses on the level differences of S-wave excited states of quantum mechanical bound systems show a systematic behavior as n increases. In view of such systematic behavior expected for quarkonia, we observe that Yð4260Þ and Zð4430Þ 1 ÀÀ states are closer to the 4S and 5S states with leptonic decay widths predicted as 0.65 keV and 0.49 keV, respectively. The c " c ð6SÞ 1 ÀÀ state is predicted to be around 4600 MeV and its leptonic decay width 0.39 keV. The present study also favors other charmonialike states, Yð4360Þ and Yð4660Þ, as admixtures of charmonia S À D states. Similarly we find Çð10865Þ does not fit either the 5S state or an admixture of S À D states of a b " b system. We identify Y b ð10888Þ observed by Belle as the 6S state of bottonia whose leptonic width is predicted as 0.158 keV. Our predicted leptonic width, 0.242 keV of Çð10575; 4SÞ, is in good agreement with the experimental value of 0:272 AE 0:029 keV. We predict the pure Çð5SÞ state at about 100 MeV lower than 10865 MeV and its leptonic width 0.191 keV. The upsilon state Çð11019Þ seems to be the right candidate for the 7S state, with 0.134 keV as its predicted leptonic width, which is in very good agreement with the experimental value of 0:13 AE 0:03 keV.

show abstract

Section: Resultsmentioning

confidence: 99%

Leptonic and digamma decay properties ofS-wave quarkonia states

2012

View full text Add to dashboard Cite

show abstract

“…The radial wave function at origin is used in turn to calculate leptonic and two photon decay widths, and radiative transitions of these mesonic states. A comparison of our results for bottomonium mesons of specified J P C states with experimentally known masses and decay widths with the same J P C can help in identifying quarks and gluonic field configurations of the observed bottomonium mesons like Υ(10860), Υ(11020), and Y b (10890).Heavy hybrid mesons have also been studied using theoretical approaches like constituent gluon model [7,8,9], QCD Sum Rule [10,11,12,13,14,15,16,17], lattice QCD [6], and Bethe-Salpeter equation [18]. Wherever possible we compare with these theoretical results, along with available experimental numbers.The paper is organized as follows.…”

mentioning

confidence: 84%

Higher hybrid bottomonia in an extended potential model

et al. 2017

View full text Add to dashboard Cite

Using our extension of the quark potential model to hybrid mesons that fits well to the available lattice results, we now calculate the masses, radii, wave functions at origin, leptonic and two photon decay widths, E1 and M 1 radiative transitions for a significant number of bottomonium mesons. These mesons include both conventional and hybrid ones with radial and angular excitations. Our numerical solutions of the Schrödinger equation are related to QCD through the Born-Oppenheimer approach. Relativistic corrections in masses and decay widths are also calculated by applying the leading order perturbation theory. The calculated results are compared with available experimental data and the theoretical results by other groups. We also identify the states of Υ(10860), Υ(11020), and Y b (10890) mesons by comparing their experimental masses and decay widths with our results.

show abstract

“…The hybrid meson with the quantum numbers J PC ¼ 1 Àþ was found to be around 1.9 GeV [27,28]. The mass from constituent gluon model is around 1.93 GeV [29]. Many authors studied the mass of the hybrid meson using the QCD sum rule formalism [30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

“…The left figure is for (g A À g B ), calculated using Eq (29),. and the right figure is for (g A 0 À g B 0 ).…”

mentioning

confidence: 99%

Decay properties of the1−+hybrid state

et al. 2011

View full text Add to dashboard Cite

Within the framework of the QCD sum rules, we consider the three-point correlation function, work at the limit q 2 ! 0 and m ! 0, and pick out the singular term $ 1 q 2 to extract the pionic coupling constants of the 1 Àþ hybrid meson. Then, we calculate the decay widths of different modes. The decay width of the S-wave modes b 1 , f 1 increases quickly as the hybrid meson mass and decay momentum increase. But for the low mass hybrid meson around 1.6 GeV, the P-wave decay mode is very important and its width is around 180 MeV, while the widths of and 0 are strongly suppressed. We suggest the experimental search of 1 ð1600Þ through the decay chains at the Beijing Spectrometer: J=c ðc 0 Þ ! 1 þ or J=c ðc 0 Þ ! 1 þ , where the 1 state can be reconstructed through the decay modes 1 ! ! þ À 0 or 1 ! f 1 ð1285Þ 0 . It is also interesting to look for 1 using the available BELLE/ BABAR data through the process e þ e

show abstract

Hybrid States From Constituent Glue Model

Cited by 26 publications

References 56 publications

Leptonic and digamma decay properties ofS-wave quarkonia states

Leptonic and digamma decay properties ofS-wave quarkonia states

Higher hybrid bottomonia in an extended potential model

Decay properties of the1−+hybrid state

Contact Info

Product

Resources

About