### Abstract

We study whether the pseudoscalar glueball mass in full QCD can differ from the prediction of quenched lattice calculations. Using properties of the correlator of the vacuum topological susceptibility we derive an expression for the upper bound on the QCD glueball mass. We show that the QCD pseudoscalar glueball is lighter than the pure Yang-Mills theory glueball studied in quenched lattice calculations. The mass difference between those two states is of the order of 1/N_{C}. The value calculated for the 0^{-+} QCD glueball mass cannot be reconciled with any physical state observed so far in the corresponding channel. The glueball decay constant and its production rate in J/ψ radiative decays are calculated. The production rate is large enough to be studied experimentally.

Original language | English (US) |
---|---|

Article number | 055003 |

Pages (from-to) | 550031-550038 |

Number of pages | 8 |

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 58 |

Issue number | 5 |

State | Published - 1998 |

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### ASJC Scopus subject areas

- Mathematical Physics
- Physics and Astronomy(all)
- Nuclear and High Energy Physics

### Cite this

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*58*(5), 550031-550038. [055003].

**Pseudoscalar glueball mass : QCD versus lattice gauge theory prediction.** / Gabadadze, Gregory.

Research output: Contribution to journal › Article

*Physical Review D - Particles, Fields, Gravitation and Cosmology*, vol. 58, no. 5, 055003, pp. 550031-550038.

}

TY - JOUR

T1 - Pseudoscalar glueball mass

T2 - QCD versus lattice gauge theory prediction

AU - Gabadadze, Gregory

PY - 1998

Y1 - 1998

N2 - We study whether the pseudoscalar glueball mass in full QCD can differ from the prediction of quenched lattice calculations. Using properties of the correlator of the vacuum topological susceptibility we derive an expression for the upper bound on the QCD glueball mass. We show that the QCD pseudoscalar glueball is lighter than the pure Yang-Mills theory glueball studied in quenched lattice calculations. The mass difference between those two states is of the order of 1/NC. The value calculated for the 0-+ QCD glueball mass cannot be reconciled with any physical state observed so far in the corresponding channel. The glueball decay constant and its production rate in J/ψ radiative decays are calculated. The production rate is large enough to be studied experimentally.

AB - We study whether the pseudoscalar glueball mass in full QCD can differ from the prediction of quenched lattice calculations. Using properties of the correlator of the vacuum topological susceptibility we derive an expression for the upper bound on the QCD glueball mass. We show that the QCD pseudoscalar glueball is lighter than the pure Yang-Mills theory glueball studied in quenched lattice calculations. The mass difference between those two states is of the order of 1/NC. The value calculated for the 0-+ QCD glueball mass cannot be reconciled with any physical state observed so far in the corresponding channel. The glueball decay constant and its production rate in J/ψ radiative decays are calculated. The production rate is large enough to be studied experimentally.

UR - http://www.scopus.com/inward/record.url?scp=33750258365&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33750258365&partnerID=8YFLogxK

M3 - Article

VL - 58

SP - 550031

EP - 550038

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 5

M1 - 055003

ER -