NLO jet production at central rapidities in k T factorization

In this contribution we discuss the inclusive production of jets in central regions of rapidity in the context of kT ‐factorization at next‐to‐leading order (NLO). We work in the Regge limit of QCD and use the NLO BFKL results. A jet cone definition is propo sed together with a phase‐ space separation into multi‐Regge and quasi‐multi‐Regge kinematics. We discuss scattering of highly virtual photons, with a symmetric energy scale to separate the impact factors from the gluon Green’s function, and hadron‐hadron collisions, wit h a non‐symmetric scale choice.

[1]  A. Vera.  The effect of NLO conformal spins in azimuthal angle decorrelation of jet pairs , 2006, hep-ph/0602250.

[2]  A. Vera.  An “all-poles” approximation to collinear resummations in the Regge limit of perturbative QCD , 2005, hep-ph/0505128.

[3]  U. Cambridge,et al.  The Gluon Green's function in the BFKL approach at next-to-leading logarithmic accuracy. , 2003, hep-ph/0309331.

[4]  G. Salam,et al.  Renormalization group improved small x Green's function , 2003, hep-ph/0307188.

[5]  D. Ostrovsky.  NLO correction to one-jet inclusive production at high energies , 1999, hep-ph/9912258.

[6]  V. Fadin.  Next-to-leading BFKL , 1998, hep-ph/9807527.

[7]  L. Lipatov,et al.  Two-gluon contribution to the kernel of the Balitsky-Fadin-Kuraev-Lipatov equation , 1998 .

[8]  L. Lipatov,et al.  BFKL pomeron in the next-to-leading approximation , 1998, hep-ph/9802290.

[9]  V. Fadin,et al.  Gribov's theorem on soft emission and the Raggeon-Reggeon-gluon vertex at small transverse momentum , 1996, hep-ph/9608229.

[10]  B. Andersson,et al.  The linked dipole chain model for DIS , 1996 .

[11]  Fiore,et al.  Quark contribution to the Reggeon-Reggeon-gluon vertex in QCD. , 1994, Physical review. D, Particles and fields.

[12]  L. Lipatov,et al.  Radiative corrections to QCD scattering amplitudes in a multi - Regge kinematics , 1993 .

[13]  B. Webber,et al.  QCD coherent branching and semi-inclusive processes at large χ , 1991 .

[14]  L. Lipatov.  Reggeization of the Vector Meson and the Vacuum Singularity in Nonabelian Gauge Theories , 1976 .