Abstract
The BFKL equation is based on the gluon yReggeization. In the leading and next-to-leading logarithmic approximations it is derived using the pole Regge form of QCD amplitudes with gluon quantum numbers in cross-channels and negative signature. This form is violated in the next-to-next-to-leading approximation. In two and three loops the observed violation can be explained by the presence of the three-Reggeon cut. Contributions of this cut to elastic scattering amplitudes up to four loops is discussed.
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REFERENCES
V. S. Fadin, E. A. Kuraev, and L. N. Lipatov, “On the Pomeranchuk singularity in asymptotically free theories,” Phys. Lett. B 60, 50 (1975).
E. A. Kuraev, L. N. Lipatov, and V. S. Fadin, “Multi-reggeon processes in the Yang–Mills theory,” Sov. Phys. JETP 44, 443 (1976).
E. A. Kuraev, L. N. Lipatov, and V. S. Fadin, “The Pomeranchuk singularity in nonabelian Gauge theories,” Sov. Phys. JETP 45, 199 (1977).
I. I. Balitsky and L. N. Lipatov, “The Pomeranchuk singularity in quantum chromodynamics,” Sov. J. Nucl. Phys. 28, 822 (1978).
I. I. Balitsky, L. N. Lipatov, and V. S. Fadin, “Regge processes in nonabelian Gauge theories,” in Proceedings of the 4th Winter School of LNPI, Leningrad, 1979, p. 109.
B. L. Ioffe, V. S. Fadin, and L. N. Lipatov, Quantum Chromodynamics: Perturbative and Nonperturbative Aspects (Cambridge Univ. Press, Cambridge, 2010).
V. S. Fadin, M. G. Kozlov, and A. V. Reznichenko, “Gluon reggeization in Yang-Mills theories,” Phys. Rev. D: Part. Fields 92, 085044 (2015).
V. del Duca and E. W. N. Glover, “The high-energy limit of QCD at two loops,” J. High Energy Phys. 0110, 035 (2001).
V. del Duca, G. Falcioni, L. Magnea, and L. Vernazza, “High-energy QCD amplitudes at two loops and beyond,” Phys. Lett. B 732, 233 (2014).
V. del Duca, G. Falcioni, L. Magnea, and L. Vernazza, “Beyond reggeization for two- and three-loop QCD amplitudes,” PoS RADCOR 2013, 046 (2013).
V. del Duca, G. Falcioni, L. Magnea, and L. Vernazza, “Analyzing high-energy factorization beyond next-to-leading logarithmic accuracy,” J. High Energy Phys. 1502, 029 (2015).
V. S. Fadin, “Particularities of the NNLLA BFKL,” AIP Conf. Proc. 1819, 060003 (2017).
S. Caron-Huot, E. Gardi, and L. Vernazza, “Two-parton scattering in the high-energy limit,” J. High Energy Phys. 1706, 016 (2017).
5. ACKNOWLEDGMENTS
Work supported in part by the Ministry of Science and Higher Education of Russian Federation, in part by RFBR, grant 19-02-00690.
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Fadin, V.S. BFKL Equation and Regge Cuts. Phys. Part. Nuclei Lett. 16, 409–413 (2019). https://doi.org/10.1134/S1547477119050121
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DOI: https://doi.org/10.1134/S1547477119050121