Journal
NUCLEAR PHYSICS B
Volume 899, Issue -, Pages 527-546Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysb.2015.08.010
Keywords
-
Categories
Funding
- Magnus Ehrnrooth foundation (Finland)
- Waldemar von Frenckell foundation (Finland)
- Academy of Finland
- Finnish Academy of Science and Letters
- OTKA (Hungary) [NK 101438]
- Nylands nation vid Helsingfors universitet (Finland)
- MSMT CR (Czech Republic)
Ask authors/readers for more resources
The TOTEM experiment has made a precise measurement of the elastic proton proton differential cross-section at the centre-of-mass energy root s = 8 TeV based on a high-statistics data sample obtained with the beta* = 90 m optics. Both the statistical and systematic uncertainties remain below 1%, except for the t-independent contribution from the overall normalisation. This unprecedented precision allows to exclude a purely exponential differential cross-section in the range of four-momentum transfer squared 0.027 < vertical bar t vertical bar < 0.2 GeV2 with a significance greater than 7 sigma. Two extended parametrisations, with quadratic and cubic polynomials in the exponent, are shown to be well compatible with the data. Using them for the differential cross-section extrapolation to t = 0, and further applying the optical theorem, yields total cross-section estimates of (101.5 +/- 2.1) mb and (101.9 +/- 2.1) mb, respectively, in agreement with previous TOTEM measurements. (C) 2015 The Authors. Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available