The non-forward BFKL amplitude and rapidity gap physics
نویسندگان
چکیده
منابع مشابه
The non-forward BFKL amplitude and rapidity gap physics
We discuss the BFKL approach to processes with large momentum transferred through a rapidity gap. The Mueller and Tang scheme to the BFKL non-forward parton-parton elastic scattering amplitude at large t, is extended to include higher conformal spins. The new contributions are found to decrease with increasing energy, as follows from the gluon reggeisation phenomenon, and to vanish for asymptot...
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Details of the calculation of the non-forward BFKL kernel at next-to-leading order (NLO) are offered. Specifically we show the calculation of the two-gluon production contribution. This contribution was the last missing part of the kernel. Together with the NLO gluon Regge trajectory, the NLO contribution of one-gluon production and the contribution of quark-antiquark production which were foun...
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The large rapidity gap events from HERA are analyzed within a model containing a pomeron and an f − reggeon contribution. The choice for the pomeron contribution is based on the Donnachie-Landshoff model. The dependence of the " effective intercept " of the pomeron on the momentum fraction β and on its Bjorken variable ξ is calculated. The increasing precision of the HERA-measurements and the e...
متن کاملNon-forward Bfkl Pomeron at Next-to-leading Order *
The kernel of the BFKL equation for non-zero momentum transfer is found at next-to-leading order. It is presented in various forms depending on the regularization of the infrared singularities in " virtual " and " real " parts of the kernel. The infrared safety of the total kernel is demonstrated and a form free from the singularities is suggested.
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2002
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(01)01380-6