Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Total Hadronic Cross-Section Data and the Froissart-Martin Bound

Full text
Author(s):
Fagundes, Daniel Almeida [1] ; Menon, Marcio Jose [1] ; Recchia Gomes Silva, Paulo Victor [1]
Total Authors: 3
Affiliation:
[1] Univ Estadual Campinas UNICAMP, Inst Fis Gleb Wataghin, BR-13083859 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Brazilian Journal of Physics; v. 42, n. 5-6, p. 452-464, DEC 2012.
Web of Science Citations: 7
Abstract

The energy dependence of the total hadronic cross section at high energies is investigated with focus on the recent experimental result by the Total Elastic and Diffractive Cross-section Measurement Collaboration at 7 TeV and the Froissart-Martin bound. On the basis of a class of analytical parametrization with the exponent gamma in the leading logarithm contribution as a free parameter, different variants of fits to pp and p total cross-section data above 5 GeV are developed. Two ensembles are considered, the first comprising data up to 1.8 TeV and the second also including the data collected at 7 TeV. We show that in all fit variants applied to the first ensemble, the exponent is statistically consistent with gamma = 2. Applied to the second ensemble, however, the same variants yield gamma values above 2, a result already obtained in two other analysis, by Amaldi et al. and by the UA4/2 Collaboration. As recently discussed by Azimov, this faster-than-squared-logarithm rise does not necessarily violate unitarity. Our results suggest that the energy dependence of the hadronic total cross section at high energies still constitutes an open problem. (AU)

FAPESP's process: 11/15016-4 - A Phenomenological Analysis on the Proton-Proton Elastic Scattering at the LHC Energy Region
Grantee:Paulo Victor Recchia Gomes da Silva
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 11/00505-0 - Diffractive hadron scattering at high energies: eikonal representation and nonperturbative quantum chromodynamics
Grantee:Daniel Almeida Fagundes
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 09/50180-0 - Study of hadronic interactions at high energies
Grantee:Yogiro Hama
Support Opportunities: Research Projects - Thematic Grants