Elastic scattering of virtual photons via a quark loop in the double-logarithmic approximation

Standard

Elastic scattering of virtual photons via a quark loop in the double-logarithmic approximation. / Ermolaev, B. I.; Ivanov, D. Yu; Troyan, S. I.

In: Physical Review D, Vol. 97, No. 7, 076007, 13.04.2018.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{0ed979270c1348f5b276f459705e30c5,

title = "Elastic scattering of virtual photons via a quark loop in the double-logarithmic approximation",

abstract = "We calculate the amplitude of elastic photon-photon scattering via a single quark loop in the double-logarithmic approximation, presuming all external photons to be off-shell and unpolarized. At the same time we account for the running coupling effects. We consider this process in the forward kinematics at arbitrary relations between t and the external photon virtualities. We obtain explicit expressions for the photon-photon scattering amplitudes in all double-logarithmic kinematic regions. Then we calculate the small-x asymptotics of the obtained amplitudes and compare them with the parent amplitudes, thereby fixing the applicability regions of the asymptotics, i.e., fixing the applicability region for the nonvacuum Reggeons. We find that these Reggeons should be used at x<10-8 only.",

keywords = "TOTAL CROSS-SECTION, POMERANCHUK SINGULARITY, DIPOLE PICTURE, HIGH-ENERGIES, IMPACT FACTOR, BFKL POMERON, QCD POMERON, COLLISIONS, LEP, EXCHANGE",

author = "Ermolaev, {B. I.} and Ivanov, {D. Yu} and Troyan, {S. I.}",

note = "Publisher Copyright: {\textcopyright} 2018 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP . ",

year = "2018",

month = apr,

day = "13",

doi = "10.1103/PhysRevD.97.076007",

language = "English",

volume = "97",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "AMER PHYSICAL SOC",

number = "7",

}

RIS

TY - JOUR

T1 - Elastic scattering of virtual photons via a quark loop in the double-logarithmic approximation

AU - Ermolaev, B. I.

AU - Ivanov, D. Yu

AU - Troyan, S. I.

N1 - Publisher Copyright: © 2018 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP .

PY - 2018/4/13

Y1 - 2018/4/13

N2 - We calculate the amplitude of elastic photon-photon scattering via a single quark loop in the double-logarithmic approximation, presuming all external photons to be off-shell and unpolarized. At the same time we account for the running coupling effects. We consider this process in the forward kinematics at arbitrary relations between t and the external photon virtualities. We obtain explicit expressions for the photon-photon scattering amplitudes in all double-logarithmic kinematic regions. Then we calculate the small-x asymptotics of the obtained amplitudes and compare them with the parent amplitudes, thereby fixing the applicability regions of the asymptotics, i.e., fixing the applicability region for the nonvacuum Reggeons. We find that these Reggeons should be used at x<10-8 only.

AB - We calculate the amplitude of elastic photon-photon scattering via a single quark loop in the double-logarithmic approximation, presuming all external photons to be off-shell and unpolarized. At the same time we account for the running coupling effects. We consider this process in the forward kinematics at arbitrary relations between t and the external photon virtualities. We obtain explicit expressions for the photon-photon scattering amplitudes in all double-logarithmic kinematic regions. Then we calculate the small-x asymptotics of the obtained amplitudes and compare them with the parent amplitudes, thereby fixing the applicability regions of the asymptotics, i.e., fixing the applicability region for the nonvacuum Reggeons. We find that these Reggeons should be used at x<10-8 only.

KW - TOTAL CROSS-SECTION

KW - POMERANCHUK SINGULARITY

KW - DIPOLE PICTURE

KW - HIGH-ENERGIES

KW - IMPACT FACTOR

KW - BFKL POMERON

KW - QCD POMERON

KW - COLLISIONS

KW - LEP

KW - EXCHANGE

UR - http://www.scopus.com/inward/record.url?scp=85046745652&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.97.076007

DO - 10.1103/PhysRevD.97.076007

M3 - Article

AN - SCOPUS:85046745652

VL - 97

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 7

M1 - 076007

ER -

ID: 13358924