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BFKL Pomeron with massive gluons
Phys. Rev. D 89, 074002 – Published 31 March, 2014
DOI: https://doi.org/10.1103/PhysRevD.89.074002
Abstract
We solve the BFKL equation in the leading logarithmic approximation numerically in the Yang-Mills theory with the Higgs mechanism for the vector boson mass generation. It can be considered as a model for the amplitude with the correct behavior of the -channel partial waves at large impact parameters. The Pomeron spectrum of the massive BFKL kernel in the space for coincides with the continuous spectrum for the massless case although the density of its eigenvalues is 2 times smaller for , where is a negative number. We find a simple parametrization for the corresponding eigenfunctions. Because the leading singularity in the plane in this Higgs model for is a fixed cut, the Regge pole contributions could be only for nonphysical positive . Hence we can state that the correct behavior at large does not influence the main properties of the BFKL equation.
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References (21)
- L. V. Gribov, E. M. Levin, and M. G. Ryskin, Phys. Rep. 100, 1 (1983).
- A. H. Mueller and J. Qiu, Nucl. Phys. B268, 427 (1986).
- L. McLerran and R. Venugopalan, Phys. Rev. D 49, 2233 (1994); 49, 3352 (1994); 50, 2225 (1994); 53, 458 (1996); 59, 094002 (1999).
- Yuri V. Kovchegov and Eugene Levin, Quantum Choromodynamics at High Energies, Cambridge Monographs on Particle Physics, Nuclear Physics and Cosmology (Cambridge University Press, Cambridge, 2012), and references therein.
- A. Kovner and U. A. Wiedemann, Phys. Rev. D 66, 051502 (2002).
- A. Kovner and U. A. Wiedemann, Phys. Rev. D 66, 034031 (2002).
- A. Kovner and U. A. Wiedemann, Phys. Lett. B 551, 311 (2003).
- E. Ferreiro, E. Iancu, K. Itakura, and L. McLerran, Nucl. Phys. A710, 373 (2002).
- M. Froissart, Phys. Rev. 123, 1053 (1961); A. Martin, Scattering Theory: Unitarity, Analyticity and Crossing, Lecture Notes in Physics (Springer-Verlag, Berlin, 1969).
- E. A. Kuraev, L. N. Lipatov, and F. S. Fadin, Sov. Phys. JETP 45, 199 (1977); Ya. Ya. Balitsky and L. N. Lipatov, Sov. J. Nucl. Phys. 28, 822 (1978).
- L. N. Lipatov, Phys. Rep. 286, 131 (1997); Zh. Eksp. Teor. Fiz. 90, 1536 (1986) [Sov. Phys. JETP 63, 904 (1986)].
- J. Berger and A. M. Stasto, Phys. Rev. D 84, 094022 (2011).
- J. Berger and A. M. Stasto, Phys. Rev. D 83, 034015 (2011).
- K. J. Golec-Biernat and A. M. Stasto, Nucl. Phys. B668, 345 (2003).
- E. Gotsman, M. Kozlov, E. Levin, U. Maor, and E. Naftali, Nucl. Phys. A742, 55 (2004).
- E. Levin and S. Tapia, J. High Energy Phys. 07 (2013) 183.
- E. A. Kuraev, L. N. Lipatov, and F. S. Fadin, Zh. Eksp. Teor. Fiz. 72, 377 (1977) [Sov. Phys. JETP 45, 199 (1977)]; Zh. Eksp. Teor. Fiz. 71, 840 (1976) [Sov. Phys. JETP 44, 443 (1976)]; Phys. Lett. 60B, 50 (1975); L. N. Lipatov Yad. Fiz. 23, 642 (1976) [Sov. J. Nucl. Phys. 23, 338 (1976)].
- J. Bartels, L. N. Lipatov. and K. Peters, Nucl. Phys. B772, 103 (2007).
- I. Gradstein and I. Ryzhik, Table of Integrals, Series, and Products, Fifth Edition (Academic Press, London, 1994).
- R. Enberg, K. J. Golec-Biernat, and S. Munier, Phys. Rev. D 72, 074021 (2005).
- V. N. Gribov, arXiv:hep-ph/0006158; Yad. Fiz. 9, 640 (1969); [Sov. J. Nucl. Phys. 9, 369 (1969)].