English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The dipole and the DGLAP approximations are combined with the $k_t$factorization theorem to demonstrate the fundamental property of pQCD: smalleris the size of the colorless quark-gluon configurations in the fragmentationregion, more rapid is the increase of its interaction with the target as afunction of energy. First, we show that the transverse momenta of thequark(antiquark) within the $q\bar{q}$ pair, produced in the fragmentationregion by the strongly virtual photon, increase with the decrease of x forfixed $Q^2$. As practical consequence of these effects we show that the crosssections of DIS and DVCS. We predict that the ratio of DVCS to DIS amplitudesshould very slowly approach one from above at very large collision energies.Second, we study a closely related phenomenon of the increase of the transversemomenta with the energy of the characteristic transverse momenta of thegluon/quark configurations responsible for the transition to the black diskregime. We discuss the impact of this phenomenona on the slowing of thedependence on the initial energy of the coherence length. We demonstrate that arapid projectile has the biconcave shape, which is different from theexpectations of the preQCD parton model where a fast hadron has a pancakeshape. We show that the increase of the transverse momenta leads to a newexpression for the total cross section of a DIS scattering at very largeenergies, relevant to LHeC and LHC. We discuss the impact of the discoveredphenomena on the hard processes in pp collisions, and on the dominanceofdifferent phases of chiral and conformal symmetries in the central andperipheral pp, pA, and AA collisions.

Increase with energy of parton transverse momenta in the fragmentation region in DIS and related phenomena