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/

Zendy Plus

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

Zendy Tools

Zendy Open

We considered the three jet production processes in the region of theincident lepton, photon, quark or gluon fragmentation. The fourth jet iscreated by the recoil proton. The kinematics of jet production is discussed injets production in the fragmentation region. The non-trivial relation betweenthe momenta of the recoil proton and the polar angle of its emission wasderived.  Based on this formalism the differential cross sections of QCD processes $gp\to (ggg) p; \,\,\,qp \to (q \bar{Q} Q) p; \,\,\, gp \to (g Q \bar{Q})p$ wereobtained, including the distribution on transverse momentum component of jetsfragments. It was shown that the role of the contribution of "non-Abelian"nature may become dominant in a particular kinematics of the final particles.The kinematics, in which the initial particle changes the direction of movementto the opposite one, was considered in the case of heavy quark-antiquark pairproduction.  Different distributions, including spectral, azimuthal and polar angledistribution on the fragments of jets can be arranged using our results. Wepresent besides the behavior of the ratio of non-Abelian contribution to thecross section to the total contribution. We show that it dominates for largevalues of the transverse momenta of jets component (gluons or quarks). Somehistorical introduction to the cross-sections of peripheral processes,including 2$\gamma$ creation mechanism production, including the resultBrodsky-Kinoshita-Terazawa, is given.

Processes of heavy quark pair (lepton pair) and two gluon (two photon) production in the high energy quark (electron) proton peripheral collisions