Analysis and implications of precision near-forward TOTEM data
| العنوان: | Analysis and implications of precision near-forward TOTEM data |
|---|---|
| المؤلفون: | S. Pacetti, Yogendra N. Srivastava, Giulia Pancheri |
| المصدر: | Physical Review |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Physics, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, Scattering, Zero (complex analysis), FOS: Physical sciences, Computer Science::Digital Libraries, 01 natural sciences, High Energy Physics - Experiment, Momentum, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Amplitude, 0103 physical sciences, 010306 general physics, Nuclear Experiment, Energy (signal processing) |
| الوصف: | Very precise data on elastic proton-proton scattering at $\sqrt{s}=7$, $8$ and $13$ TeV have been obtained by the TOTEM group at LHC in the near-forward region (momentum transfers down to $|t| = 6 \times 10^{-4}\ {\rm GeV}^2$ at $\sqrt{s}=8$ TeV and to $|t| = 8 \times 10^{-4}\ {\rm GeV}^2$ at $\sqrt{s}=13$ TeV). The Coulomb-nuclear interference has been measured with sufficient accuracy for TOTEM to establish the falloff of the $\rho$ parameter with increasing energy. The predictions from a previously studied model are shown to be in good agreement with the data and thus allow us to draw rather firm conclusions about the structure of the near-forward nuclear amplitude. We point out that due to a zero in the real part of the nuclear amplitude occurring at a very small momentum transfer--that can migrate into the Coulomb-nuclear interference (CNI) region at higher energies--much care is needed in extracting the numerical value of $\rho$ for such energies. Thus, the true value of $\rho$ would be higher than the TOTEM value for $\rho$ found under the hypothesis that the real part of the elastic nuclear amplitude is devoid of such a zero in the CNI region. Comment: 10 pages and 9 figures |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52fadb8965f42d1c00c64096b1092409 http://arxiv.org/abs/1811.00499 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....52fadb8965f42d1c00c64096b1092409 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |