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

Abstract

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

Authors:
 [1]; ORCiD logo [2];  [3]; ORCiD logo [4]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Novosibirsk State Univ. (Russian Federation); Russian Academy of Sciences (RAS), Novosibirsk (Russian Federation). Budker Inst. of Nuclear Physics (BINP)
  3. National Centre for Nuclear Research, Warsaw (Poland)
  4. Sorbonne Univ., Paris (France); Centre National de la Recherche Scientifique (CNRS), Orsay (France)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1570871
Alternate Identifier(s):
OSTI ID: 1573480
Report Number(s):
BNL-212309-2019-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ
Grant/Contract Number:  
SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 100; Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Boussarie, R., Grabovsky, A. V., Szymanowski, L., and Wallon, S. Towards a complete next-to-logarithmic description of forward exclusive diffractive dijet electroproduction at HERA: Real corrections. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.074020.
Boussarie, R., Grabovsky, A. V., Szymanowski, L., & Wallon, S. Towards a complete next-to-logarithmic description of forward exclusive diffractive dijet electroproduction at HERA: Real corrections. United States. doi:10.1103/PhysRevD.100.074020.
Boussarie, R., Grabovsky, A. V., Szymanowski, L., and Wallon, S. Fri . "Towards a complete next-to-logarithmic description of forward exclusive diffractive dijet electroproduction at HERA: Real corrections". United States. doi:10.1103/PhysRevD.100.074020.
@article{osti_1570871,
title = {Towards a complete next-to-logarithmic description of forward exclusive diffractive dijet electroproduction at HERA: Real corrections},
author = {Boussarie, R. and Grabovsky, A. V. and Szymanowski, L. and Wallon, S.},
abstractNote = {We studied the ep → ep + 2 jets diffractive cross section with ZEUS phase space. Neglecting the tchannel momentum in the Born and gluon dipole impact factors, we calculated the corresponding contributions to the cross section differential in β = Q2/Q2+M$2\atop{2}$$_{jets}$ and the angle Φ between the leptonic and hadronic planes. The gluon dipole contribution was obtained in the exclusive kt-algorithm with the exclusive cut ycut = 0.15 in the small ycut approximation. In the collinear approximation we canceled singularities between real and virtual contributions to the $q$$\bar{q}$ dipole configuration, keeping the exact ycut dependency. We used the Golec-Biernat-Wüsthoff (GBW) parametrization for the dipole matrix element and linearized the double dipole contributions. The results give roughly $\frac{1}{2}$ of the observed cross section for small β and coincide with it for large β.},
doi = {10.1103/PhysRevD.100.074020},
journal = {Physical Review D},
number = 7,
volume = 100,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.100.074020

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