Zobrazeno 1 - 10
of 319
pro vyhledávání: '"Kovchegov, Yuri V."'
Autor:
Kovchegov, Yuri V., Manley, Brandon
We calculate the elastic production of dijets from electron collisions with a longitudinally polarized proton target at small values of the Bjorken $x$ variable. Building on the pioneering proposals of \cite{Hatta:2016aoc,Bhattacharya:2022vvo, Bhatta
Externí odkaz:
http://arxiv.org/abs/2410.21260
We include the quark to gluon and gluon to quark shock-wave transition operators into the small Bjorken-$x$ evolution equations for helicity in the flavor-singlet channel derived earlier. While such transitions do not affect the large-$N_c$ version o
Externí odkaz:
http://arxiv.org/abs/2406.11647
Autor:
Kovchegov, Yuri V., Li, Ming
We derive the first-ever small-$x$ expression for the inclusive gluon production cross section in the central rapidity region of the longitudinally polarized proton-proton collisions. The cross section depends on the polarizations of both protons, th
Externí odkaz:
http://arxiv.org/abs/2403.06959
We propose new cross section ratios in ultra-peripheral A$+$A and $p+$A collisions (UPCs) as a potential experimental signal of saturation physics. We consider the ratio $R_1$ of elastic vector meson photoproduction cross section to the inclusive had
Externí odkaz:
http://arxiv.org/abs/2311.12208
Autor:
Kovchegov, Yuri V., Manley, Brandon
We revisit the problem of the small Bjorken-$x$ asymptotics of the quark and gluon orbital angular momentum (OAM) distributions in the proton utilizing the revised small-$x$ helicity evolution derived recently. We relate the quark and gluon OAM distr
Externí odkaz:
http://arxiv.org/abs/2310.18404
Autor:
Adamiak, Daniel, Baldonado, Nicholas, Kovchegov, Yuri V., Melnitchouk, W., Pitonyak, Daniel, Sato, Nobuo, Sievert, Matthew D., Tarasov, Andrey, Tawabutr, Yossathorn
Publikováno v:
Phys.Rev.D 108 (2023) 11, 114007
We analyze the world polarized deep-inelastic scattering (DIS) and semi-inclusive DIS (SIDIS) data at low values of $x < 0.1$, using small-$x$ evolution equations for the flavor singlet and nonsinglet helicity parton distribution functions (hPDFs). T
Externí odkaz:
http://arxiv.org/abs/2308.07461
Publikováno v:
Phys.Rev.D 108 (2023) 5, 054005
We present a numerical solution of the revised version of the small-$x$ helicity evolution equations at large $N_c$ and $N_f$. (Here $N_c$ and $N_f$ are the numbers of quark colors and flavors, respectively.) The evolution equations are double-logari
Externí odkaz:
http://arxiv.org/abs/2306.01651
Autor:
Borden, Jeremy, Kovchegov, Yuri V.
We construct an exact analytic solution of the revised small-$x$ helicity evolution equations derived recently. The equations we solve are obtained in the large-$N_c$ limit (with $N_c$ the number of quark colors) and are double-logarithmic (summing p
Externí odkaz:
http://arxiv.org/abs/2304.06161