Low mass glueballs in the meson spectrum

Donoghue, John F.; Johnson, Kenneth A.; Li, Bing An

doi:10.1016/0370-2693(81)90560-8

Cited by 140 publications

(64 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The order of the associated transition is deterrmned by a; in partxcular, for 7 < a ~< 9, we have a finite e(T~), while c v diverges as T~ T c. Assuming that the critical behavlour of such a system can be identified with what we find m lattice QCD, we shall therefore fix b-~ = 43A L and maintain a in the mentioned range. We furthermore take d = 6, in accord with bag model [35] and strong coupling arguments [34]. The remaining constant c is fixed by normalizing resonance gas results to our [28,36].…”

Section: J Engels Et Al / Gaugefield Thermodynamwsmentioning

confidence: 99%

Gauge field thermodynamics for the SU(2) Yang-Mills system

et al. 1982

View full text Add to dashboard Cite

After reviewing the euclidean formulation of the thermodynamics for quantum spin systems, we develop the corresponding formalism for SU(N) gauge fields on the lattice The results are then evaluated for the SU(2) system, using Monte Carlo simulation on lattices of (space × temperature) size 103N 2,3,4,5 At hagh temperature, the system exhibits Stefan-Boltzmann behavlour, with three gluomc colour degrees of freedom At T~ ~ 43A~_ (215 MeV), the transiuon to "hadromc" behawour occurs, signalled by a sharp peak in the specific heat From the behawour below the deconfinement transition (T< Tc), we obtain m G ~ 200A L (1000 MeV) for the mass of the lowest gluomum state (glueball)

show abstract

Section: J Engels Et Al / Gaugefield Thermodynamwsmentioning

confidence: 99%

Gauge field thermodynamics for the SU(2) Yang-Mills system

et al. 1982

View full text Add to dashboard Cite

show abstract

“…1 and 2 as an indication of finite e and a diverging C V at T = T c, then we must have 7/2 < a <~ 9/2. The ground-state degeneracy is chosen as d = 6, in accord with strong coupling [14] and bag model [15] estimates. Finally, the constant c in eq.…”

Section: "N'2 2m G × [K 2 (Re~t) + (2t/m)ki(m/t) + 9 (Tim)2k 2 (M/t)mentioning

confidence: 99%

Glueball mass estimate from finite temperature SU(2) lattice studies

et al. 1981

View full text Add to dashboard Cite

Finite temperature Monte Carlo simulations of the SU (2) Yang-Mills system on the lattice are used to obtain an estimate of the mass m G of the lowest gluonium state. Taking gluon matter in the hadronic regime, below the deconfinement transition, to follow the usual string or bag model pattern, we find from the temperature dependence of the energy density and of the specific heat that m G = (1.7 ± 0.5)x/~, where o is the string tension.Monte Carlo studies of the SU(2) Yang-Mills system on the lattice at finite physical temperature T have revealed a deconfinement transition [1][2][3] at the critical temperature T c ~ 0.5 x,~, where the system changes from gluonium matter to gluon gas; here a denotes the strong tension. Above Tc, at sufficiently high temperatures, this gluon gas attains the (parameter-free) Stefan-Boltzmann limit of an ideal massless boson gas [3]. Below Tc, the behaviour of the system is less well understood; but if we believe that it also provides there a reasonable approximation to the real quark-ghion world, then we expect gluonium matter to exhibit the same basic features as hadron matter.The description of hadrons as bound states of quarks leads to a resonance spectrum, starting with a lowest state of mass m 0. In the continuum, both bag for an ideal gas of resonances, or its derivatives, become singular at the temperature T c = 1/b; above Tc, the integral (2) is no longer defined. If we identify this critical behaviour with the deconfinement transition of the SU(2) lattice problem at T c = 0.5 x/o, then the approach to deconfinement is governed by the lowest gluonium mass m 0 = m o as scale. Comparing the form predicted by eq. (1) with that obtained from the Monte Carlo simulation of the SU(2) Yang-Mills system thus gives an estimate of the glueball mass m G . We note that this approach -using the resonance 332 0 031-9163/81/0000-0000/$ 02.50

show abstract

“…The spectrum of stable bound states includes several glueballs with different quantum numbers J P C . Some of these glueballs have been studied in some detail in various contexts; see for example [13,14,15,16,17,18,19] and a recent review [20]. The masses of the v-glueballs are determined by the confinement scale Λ v or, equivalently, the string tension σ through the relationship m 0 ++ ≈ 7Λ v ≈ 3.7σ.…”

Section: Introductionmentioning

confidence: 99%

Pure-glue hidden valleys through the Higgs portal

Juknevich¹

2010

J. High Energ. Phys.

152

View full text Add to dashboard Cite

We consider the possibility that the Higgs boson can act as a link to a hidden sector in the context of pure-glue hidden valley models. In these models the standard model is weakly coupled, through loops of heavy messengers fields, to a hidden sector whose low energy dynamics is described by a pure-Yang-Mills theory. Such a hidden sector contains several metastable hidden glueballs. In this work we shall extend earlier results on hidden valleys to include couplings of the messengers to the standard model Higgs sector. The effective interactions at one-loop couple the hidden gluons to the standard model particles through the Higgs sector. These couplings in turn induce hidden glueball decays to fermion pairs, or cascade decays with multiple Higgs emission. The presence of effective operators of different mass dimensions, often competing with each other, together with a great diversity of states, leads to a great variability in the lifetimes and decay modes of the hidden glueballs. We find that most of the operators considered in this paper are not heavily constrained by precision electroweak physics, therefore leaving plenty of room in the parameter space to be explored by the future experiments at the LHC.

show abstract

Low mass glueballs in the meson spectrum

Cited by 140 publications

References 16 publications

Gauge field thermodynamics for the SU(2) Yang-Mills system

Gauge field thermodynamics for the SU(2) Yang-Mills system

Glueball mass estimate from finite temperature SU(2) lattice studies

Pure-glue hidden valleys through the Higgs portal

Contact Info

Product

Resources

About