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Pis'ma v Zh. Èksper. Teoret. Fiz., 2012, Volume 96, Issue 11, Pages 771–777 (Mi jetpl3293)  

This article is cited in 1 scientific paper (total in 1 paper)

FIELDS, PARTICLES, AND NUCLEI

Non-linear BFKL dynamics: color screening vs. gluon fusion

R. Fioreab, P. V. Sasorovc, V. R. Zollerc

a Università degli Studi della Calabria, Dipartimento di Fisica
b Istituto Nazionale di Fisica Nucleare
c Institute for Theoretical and Experimental Physics (Russian Federation State Scientific Center), Moscow

Abstract: A feasible mechanism of unitarization of amplitudes of deep inelastic scattering at small values of Bjorken $x$ is the gluon fusion. However, its efficiency depends crucially on the vacuum color screening effect which accompanies the multiplication and the diffusion of BFKL gluons from small to large distances. From the fits to lattice data on field strength correlators the propagation length of perturbative gluons is $R_c\simeq (0.2$$0.3)$ Fm. The probability to find a perturbative gluon with short propagation length at large distances is suppressed exponentially. It changes the pattern of (dif)fusion dramatically. The magnitude of the fusion effect appears to be controlled by the new dimensionless parameter $\sim R_c^2/8B$, with the diffraction cone slope $B$ standing for the characteristic size of the interaction region. It should slowly $\propto 1/\ln Q^2$ decrease at large $Q^2$. Smallness of the ratio $R_c^2/8B$ makes the non-linear effects rather weak even at lowest Bjorken $x$ available at HERA. We report the results of our studies of the non-linear BFKL equation which has been generalized to incorporate the running coupling and the screening radius $R_c$ as the infrared regulator.

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English version:
Journal of Experimental and Theoretical Physics Letters, 2012, 96:11, 687–693

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Received: 25.10.2012
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Citation: R. Fiore, P. V. Sasorov, V. R. Zoller, “Non-linear BFKL dynamics: color screening vs. gluon fusion”, Pis'ma v Zh. Èksper. Teoret. Fiz., 96:11 (2012), 771–777; JETP Letters, 96:11 (2012), 687–693

Citation in format AMSBIB
\Bibitem{FioSasZol12}
\by R.~Fiore, P.~V.~Sasorov, V.~R.~Zoller
\paper Non-linear BFKL dynamics:
color screening vs. gluon fusion
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2012
\vol 96
\issue 11
\pages 771--777
\mathnet{http://mi.mathnet.ru/jetpl3293}
\elib{http://elibrary.ru/item.asp?id=18311790}
\transl
\jour JETP Letters
\yr 2012
\vol 96
\issue 11
\pages 687--693
\crossref{https://doi.org/10.1134/S0021364012230063}
\isi{http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&DestLinkType=FullRecord&DestApp=ALL_WOS&KeyUT=000315505400001}
\elib{http://elibrary.ru/item.asp?id=20431914}
\scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-84874562446}


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    Citing articles on Google Scholar: Russian citations, English citations
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    This publication is cited in the following articles:
    1. JETP Letters, 99:7 (2014), 363–367  mathnet  crossref  crossref  isi  elib  elib
  •       Pis'ma v Zhurnal ksperimental'noi i Teoreticheskoi Fiziki
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