Towards a complete next-to-logarithmic description of forward exclusive diffractive dijet electroproduction at HERA: Real corrections

被引：33

作者：

Boussarie, R. ^{[1
]}

Grabovsky, A. V. ^{[2
,3
]}

Szymanowski, L. ^{[4
]}

Wallon, S. ^{[5
,6
]}

机构：

[1] Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA

[2] Budker Inst Nucl Phys, 11 Lavrenteva Ave, Novosibirsk 630090, Russia

[3] Novosibirsk State Univ, 2 Pirogova St, Novosibirsk 630090, Russia

[4] Natl Ctr Nucl Res NCBJ, PL-02093 Warsaw, Poland

[5] Univ Paris Saclay, Univ Paris Sud, CNRS, Lab Phys Theor,UMR 8627, F-91405 Orsay, France

[6] Sorbonne Univ, Fac Phys, 4 Pl Jussieu, F-75252 Paris 05, France

来源：

PHYSICAL REVIEW D | 2019年 / 100卷 / 07期

关键词：

DEEP-INELASTIC SCATTERING; NONLINEAR GLUON EVOLUTION; COLOR GLASS CONDENSATE; LEADING PROTON; FACTORIZATION; EQUATION; JETS;

D O I：

10.1103/PhysRevD.100.074020

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We studied the ep -> ep + 2 jets diffractive cross section with ZEUS phase space. Neglecting the t-channel momentum in the Born and gluon dipole impact factors, we calculated the corresponding contributions to the cross section differential in beta=Q(2)/Q(2)vertical bar M-2jets(2) and the angle phi between the leptonic and hadronic planes. The gluon dipole contribution was obtained in the exclusive k(t)-algorithm with the exclusive cut y(cut) = 0.15 in the small y(cut) approximation. In the collinear approximation we canceled singularities between real and virtual contributions to the q (q) over bar dipole configuration, keeping the exact y(cut) dependency. We used the Golec-Biernat-Wusthoff (GBW) parametrization for the dipole matrix element and linearized the double dipole contributions. The results give roughly 1/2 of the observed cross section for small beta and coincide with it for large beta.

引用

页数：30

共 46 条

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