Showing 1999 · hep-phShow all

10 papers · 2 filters

hep-ph1999★ 120 cited

The Heavy Quarkonium Spectrum at Order

N. Brambilla, A. Pineda, J. Soto +1

We compute the complete leading-log terms of the next-to-next-to-next-to-leading-order corrections to potential NRQCD. As a by-product we obtain the leading logs at in…

hep-ph1999★ 136 cited

Strong Enhancement of Through Final State Interactions

Elisabetta Pallante, Antonio Pich

We quantify the important effect of strong final state interactions in the weak amplitudes, using the measured -- phase shifts with J=0 and . The final rescat…

hep-ph1999★ 1 cited

Extended non-chiral quark models confronting QCD

A. A. Andrianov, V. A. Andrianov

We discuss the low energy effective action of QCD in the quark sector. When it is built at the CSB (chiral symmetry breaking) scale by means of perturbation theory it has the struc…

hep-ph1999★ 6 cited

The Extended Chiral Quark Model confronts QCD

A. A. Andrianov, D. Espriu, R. Tarrach

We discuss the truncation of low energy effective action of QCD below the chiral symmetry breaking (CSB) scale, including all operators of dimensionality less or equal to 6 which c…

hep-ph1999★ 723 cited

Potential NRQCD: an effective theory for heavy quarkonium

N. Brambilla, A. Pineda, J. Soto +1

Within an effective field theory framework we study heavy-quark--antiquark systems with a typical distance between the heavy quark and the antiquark smaller than . A…

hep-ph1999★ 72 cited

Effective Transport Equations for non-Abelian Plasmas

Daniel F. Litim, Cristina Manuel

Starting from classical transport theory, we derive a set of covariant equations describing the dynamics of mean fields and their statistical fluctuations in a non-Abelian plasma i…

hep-ph1999★ 11 cited

Vector mesons in the Extended Chiral Quark Model

A. A. Andrianov, D. Espriu

We extend our previous formulation of low-energy QCD in terms of an effective lagrangian containing operators of dimensionality constructed with pseudoscalars and quark fi…

hep-ph1999★ 33 cited

Effective Field Theory Approach to Pionium

D. Eiras, J. Soto

The various dynamical scales below the pion mass involved in atoms are sequentially integrated out using non-relativistic effective field theory techniques. This al…

hep-ph1999★ 211 cited

The infrared behaviour of the static potential in perturbative QCD

N. Brambilla, A. Pineda, J. Soto +1

The definition of the quark-antiquark static potential is given within an effective field theory framework. The leading infrared divergences of the static singlet potential in pert…

hep-ph1999★ 85 cited

Mean Field Dynamics in Non-Abelian Plasmas from Classical Transport Theory

Daniel F. Litim, Cristina Manuel

Based on classical transport theory, we present a general set of covariant equations describing the dynamics of mean fields and their statistical fluctuations in a non-Abelian plas…