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Investigating the effects of the QCD dynamics in the neutrino absorption by the Earth's interior at ultrahigh energies

Goncalves, Victor LU and Gratieri, D. R. (2015) In Physical Review D (Particles, Fields, Gravitation and Cosmology) 92(11).
Abstract
The opacity of the Earth to incident ultrahigh energy neutrinos is directly connected with the behavior of the neutrino-nucleon (sigma(nu N)) cross sections in a kinematic range utterly unexplored. In this work we investigate how the uncertainties in sigma(nu N) due the different QCD dynamic models modify the neutrino absorption while they travel across the Earth. In particular, we compare the predictions of two extreme scenarios for the high energy behavior of the cross section, which are consistent with the current experimental data. The first scenario considered is based on the solution of the linear Dokshitzer-Gribov-Lipatov-Altarelli-Parisi equations at small x and large Q(2), while the second one takes into account the unitarity... (More)
The opacity of the Earth to incident ultrahigh energy neutrinos is directly connected with the behavior of the neutrino-nucleon (sigma(nu N)) cross sections in a kinematic range utterly unexplored. In this work we investigate how the uncertainties in sigma(nu N) due the different QCD dynamic models modify the neutrino absorption while they travel across the Earth. In particular, we compare the predictions of two extreme scenarios for the high energy behavior of the cross section, which are consistent with the current experimental data. The first scenario considered is based on the solution of the linear Dokshitzer-Gribov-Lipatov-Altarelli-Parisi equations at small x and large Q(2), while the second one takes into account the unitarity effects in the neutrino-nucleon cross section by the imposition of the Froissart bound behavior in the nucleon structure functions at large energies. Our results indicate that the probability of absorption and the angular distribution of neutrino events are sensitive to the QCD dynamics at ultrahigh energies. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D (Particles, Fields, Gravitation and Cosmology)
volume
92
issue
11
publisher
American Physical Society
external identifiers
  • wos:000366169900002
  • scopus:84950326856
ISSN
1550-2368
DOI
10.1103/PhysRevD.92.113007
language
English
LU publication?
yes
id
8d4fe6a1-3fce-42cc-b16a-8cb65d7d20d5 (old id 8548839)
date added to LUP
2016-01-28 10:28:56
date last changed
2017-09-24 03:10:28
@article{8d4fe6a1-3fce-42cc-b16a-8cb65d7d20d5,
  abstract     = {The opacity of the Earth to incident ultrahigh energy neutrinos is directly connected with the behavior of the neutrino-nucleon (sigma(nu N)) cross sections in a kinematic range utterly unexplored. In this work we investigate how the uncertainties in sigma(nu N) due the different QCD dynamic models modify the neutrino absorption while they travel across the Earth. In particular, we compare the predictions of two extreme scenarios for the high energy behavior of the cross section, which are consistent with the current experimental data. The first scenario considered is based on the solution of the linear Dokshitzer-Gribov-Lipatov-Altarelli-Parisi equations at small x and large Q(2), while the second one takes into account the unitarity effects in the neutrino-nucleon cross section by the imposition of the Froissart bound behavior in the nucleon structure functions at large energies. Our results indicate that the probability of absorption and the angular distribution of neutrino events are sensitive to the QCD dynamics at ultrahigh energies.},
  articleno    = {113007},
  author       = {Goncalves, Victor and Gratieri, D. R.},
  issn         = {1550-2368},
  language     = {eng},
  number       = {11},
  publisher    = {American Physical Society},
  series       = {Physical Review D (Particles, Fields, Gravitation and Cosmology)},
  title        = {Investigating the effects of the QCD dynamics in the neutrino absorption by the Earth's interior at ultrahigh energies},
  url          = {http://dx.doi.org/10.1103/PhysRevD.92.113007},
  volume       = {92},
  year         = {2015},
}