Scalar glueball mass in Regge phenomenology

Burakovsky, Leonid

doi:10.1103/physrevd.58.057503

Cited by 8 publications

(5 citation statements)

References 42 publications

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“…A general expression for the Pomeron trajectory can be expressed as α P (t) = α P (0) + α P · t, where t is related to the dispersion relation, t = 4(k 2 + m 2 ). The latest values of α P (0) and α P are determined by experiments [48][49][50], α P (0) ∼ 1.08 and α P = 0.2 GeV −2 .…”

Section: Results and Conclusionmentioning

confidence: 99%

Antiproton-to-proton ratios for ALICE heavy-ion collisions

Tawfik¹

2011

Nuclear Physics A

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Assuming that the final state of hadronization takes place along the freezeout line, which is defined by a constant entropy density, the antiproton-to-proton ratios produced in heavy-ion collisions are studied in framework of the hadron resonance gas (HRG) model. A phase transition from quark-gluon plasma to hadrons, a hadronization, has been conjectured in order to allow modifications in the phase-space volume and thus in the single-particle distribution function. Implementing both modifications in the grand-canonical partition function and taking into account the experimental acceptance in the heavy-ion collisions, the antiproton-to-proton ratios over center-of-mass energies √ s ranging from AGS to RHIC are very well reproduced by the HRG model. Comparing with the same particle ratios in pp collisions results in a gradually narrowing discrepancy with increasing √ s. At LHC energy, the ALICE antiproton-to-proton ratios in the pp collisions turn to be very well described by the HRG model as well. It is likely that the ALICE AA-program will produce the same antiproton-to-proton ratios as the pp-one. Furthermore, the ratio gets very close to unity indicating that the matter-antimatter asymmetry nearly vanishes. The chemical potential calculated at this energy strengthens the assumption of almost fully matter-antimatter symmetry up to the LHC energy.

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Section: Results and Conclusionmentioning

confidence: 99%

Antiproton-to-proton ratios for ALICE heavy-ion collisions

Tawfik¹

2011

Nuclear Physics A

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“…We emphasize that at this time there is no convincing proof that the pomeron is a glueball. As to the ξ(2230) meson itself, it can either be a tensor glueball or a q q−glue mixture [13][14][15][16][17]. Close Frank [15] has shown that if ξ is a tensor glueball then its total width tot would be of the order of 25 MeV; but no discussion was made on the ξ →pp .…”

Section: L61mentioning

confidence: 99%

“…Eqs. (9) and (13) to (16) allow us to predict the decay width Γ ξ→pp from the measured pp total and elastic cross sections, and vice versa. We have determined the form factor parameters from the experimental pp total and elastic cross sections data [1] [6] at √ s = 53 and 62 GeV.…”

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confidence: 99%

The xi(2230) meson and the pomeron trajectory

Liu

Wei-hsing

2000

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

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We examine the possibility that the ξ(2230) meson is a member of the Pomeron trajectory. A method of connecting the ξ → pp decay width and the pp cross sections through the Pomeron residue function is presented. We have used a relativistic, singularity-free form factor to make the analytic continuation of the residue function between crossed channels. We predict that if the ξ(2230) meson is a Pomeron, then it should have a ξ → pp decay width of about 2 MeV.

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“…On the other hand in the quark jet neither the hybrid nor the glueball will be leading if the leading quark is only neutralized in color by a soft antiquark. As it is note by Burakovsky [9] it is widely believed that pseudoscalar mesons are the Goldstone bosons of broken SU(3)×SU(3) chiral symmetry of QCD, and that they should be massless in the chirally symmetric phase. Because that it is not clear how the resonance spectrum would be suitable for the description of the pseudoscalar mesons.…”

Section: Discussionmentioning

confidence: 99%