Hadronic final state predictions from CCFM: the hadron-level Monte Carlo generator Cascade

Abstract

We discuss a practical formulation of backward evolution for the CCFM small-x evolution equation and show results from its implementation in the new Monte Carlo event-generator Cascade.

Deep inelastic beauty production at HERA in thekT-factorization approach

“…In the present paper to analyze the recent H1 and ZEUS data [6][7][8][9] we use the so-called k T -factorization [11,12] (or semi-hard [13,14]) approach of QCD which has been applied earlier, in particular, in description of the charm and beauty production at HERA [15][16][17][18][19][20][21], Tevatron [22][23][24][25][26][27][28] and LEP2 [19,29,30] colliders. The k T -factorization approach is based on the Balitsky-Fadin-Kuraev-Lipatov (BFKL) [31] or Ciafaloni-Catani-Fiorani-Marchesini (CCFM) [32] gluon evolution which are valid at small x since here large logarithmic terms proportional to ln 1/x are summed up to all orders of perturbation theory (in the leading logarithmic approximation).…”

“…As it was noted already, some applications of the k T -factorization approach supplemented with the BFKL and CCFM evolution to the heavy (charm and beauty) quark production at high energies are widely discussed in the literature [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] (see also review [34,35]). It was shown [24][25][26][27][28] that the beauty cross section at Tevatron can be consistently described in the framework of this approach.…”

“…At HERA, the inclusive beauty photoproduction has been investigated [16,17,19,21,25]. In [17,19,25] comparisons with the first H1 measurements [1] have been done.…”

“…At HERA, the inclusive beauty photoproduction has been investigated [16,17,19,21,25]. In [17,19,25] comparisons with the first H1 measurements [1] have been done. In [17,25] the Monte-Carlo generator Cascade [36] has been used to predict the cross section of the b-quark and dijet associated photoproduction.…”

“…In [17,19,25] comparisons with the first H1 measurements [1] have been done. In [17,25] the Monte-Carlo generator Cascade [36] has been used to predict the cross section of the b-quark and dijet associated photoproduction. However, calculations [17,19,25] deal with the total cross sections only.…”