X iv : h ep - p h / 99 09 20 5 v 2 2 6 Se p 19 99 On the direct evidence of time - reversal non - invariance in the K 0 − K̄ 0 system

ar X iv : h ep - p h / 99 09 31 7 v 1 1 0 Se p 19 99 LAL 99 - 45 July 1999 AFTER SITGES F . RICHARD

X iv : h ep - t h / 99 09 22 5 v 1 3 0 Se p 19 99 Weak - QES extensions of the Calogero model

We construct families of Hamiltonians extending the Calogero model and such that a finite number of eigenvectors can be computed algebraically.

ar X iv : h ep - t h / 99 09 21 0 v 1 2 9 Se p 19 99 SPbU - IP - 99 - 11 Casimir - Polder energy and dilute dielectric ball : nondispersive case

We apply general formalism to derive Casimir surface force on a dilute dielectric ball without divergencies in intermediate calculations. The correspondence between the Casimir-Polder formula and Casimir surface force is shown. PACS numbers: 03.70.+k, 11.10.Gh, 12.20.-m, 12.20.Ds, 42.50.Lc E-mail: [email protected]

ar X iv : h ep - p h / 99 08 40 5 v 2 1 6 Se p 19 99 April

CDF recently measured the quantity

ar X iv : h ep - p h / 99 09 26 3 v 1 6 S ep 1 99 9

To study diffractive photon production at HERA, we compute the projection of the γ * γ impact-factor on the BFKL leading-order eigenfunctions E n,ν for non-zero transfer. This calculation supplements former ones performed for n = 0. We provide an expression for n = ±2 and check that all the other components are zero.