ar X iv : h ep - p h / 06 02 25 0 v 1 2 8 Fe b 20 06 The effect of NLO conformal spins in azimuthal angle decorrelation of jet pairs

X iv : h ep - p h / 06 02 19 6 v 1 2 1 Fe b 20 06 Elliptic Flow and Fixed p T Suppression in a Final State Interaction Model

It has been shown that a final state interaction model, used to describe J/ψ suppression, can also describe the fixed p T suppression of the π 0 (and charged pions) yield at all values of p T , with a final state interaction cross-section σ close to one milibarn. We propose an extension of the model to the pion motion in the transverse plane – which introduces a dependence of the suppression on...

ar X iv : h ep - p h / 02 06 17 1 v 2 2 4 Ju n 20 02 IPHE 2002 - 009 June 24 , 2002 B 0 – B 0 MIXING

ar X iv : h ep - t h / 06 02 12 8 v 1 1 3 Fe b 20 06 Strings in plane - fronted gravitational waves

Brinkmann's plane-fronted gravitational waves with parallel rays — shortly pp-waves — are shown to provide, under suitable conditions, exact string vacua at all orders of the sigma-model perturbation expansion. 1. Introduction The condition for the vanishing of the conformal anomaly for a bosonic string in a curved space is expressed, in σ-model perturbation theory, as R µν +. .. = 0, where the...

ar X iv : a st ro - p h / 06 02 51 3 v 1 2 3 Fe b 20 06 Jet deceleration : the case of PKS 1136 - 135

ar X iv : h ep - p h / 06 02 06 6 v 1 7 Fe b 20 06 X ( 3872 ) in effective field theory

We consider the implications from the possibility that the recently observed state X(3872) is a meson-antimeson molecule. We write an effective Lagrangian consistent with the heavy-quark and chiral symmetries needed to describe X(3872) and study its properties.