For J/psi K+ selection:

1. Track selection of J/psi candidate:

 - From jpsi Finder (this essentially does the same think that the skimming selection)

2. Jet clustering:

 - Durham algorithm using pyclus subroutine from PYTHIA
 - clustering parameter (PARU(45)) = 15 GeV;

3. J/psi selection:

 - J/psi pt >5.0
 - 2.8 < Mass Jpsi< 3.35   

4. K+ candidate selection:

 - reject track if it was identified as the product of K0, Lambda,
   gamma->e+e-;
 - pt > 0.5 GeV;
 - P total > 0.7 GeV
 - at least 2 measurement in SMT;
 - If ( pt < 1.0 ) K+ should be from the same jet as J/psi;
 - (impact(axial)/sigma)2 + (impact(stereo)/sigma)2 > 9.;
 - Number of forward misses (missed hits between the last measured
   point and the end of detector) < 3;

5. B+->J/psi K+ candidate selection:

 - Chi2 of B+ vertex < 16.0; 
 - at least 2 particles have measurements in SMT;
 - Three particles make the vertex, such that addition of each particle
   does not increase Chi2 of vertex more than 36.;
 - l/sigma(l) > 4.5 , where l is the distance in xy between primary and the B+ vertex;
 - (impact(axial)/sigma)2 + (impact(stereo)/sigma)2 < 49,
   here impact is the impact of B+ track to the primary vertex;
 - cos(alpha) > 0.9, where alpha is the angle between B+ momentum
   and the direction from primary to the B+ vertex;
 - if momentum of K+ candidate < 1.0 Gev :
                 - l/sigma(l)  > 5.5;
                 - Chi2 of B+ vertex < 9.0;
 - J/psi mass constraint