Proton-proton forward scattering at the LHC
| العنوان: | Proton-proton forward scattering at the LHC |
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| المؤلفون: | D. A. Fagundes, M. Broilo, Márcio José Menon, E. G. S. Luna |
| المصدر: | Physics Letters B, Vol 799, Iss, Pp-(2019) Physics Letters |
| بيانات النشر: | Elsevier BV, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Nuclear and High Energy Physics, Particle physics, Nuclear Theory, Proton, FOS: Physical sciences, Context (language use), 01 natural sciences, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), Pomeron, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Nuclear Experiment, 010306 general physics, Physics, Elastic scattering, Quantum chromodynamics, Large Hadron Collider, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, lcsh:QC1-999, Scattering amplitude, High Energy Physics - Phenomenology, Amplitude, High Energy Physics::Experiment, lcsh:Physics |
| الوصف: | Recently the TOTEM experiment at the LHC has released measurements at $\sqrt{s} = 13$ TeV of the proton-proton total cross section, $\sigma_{tot}$, and the ratio of the real to imaginary parts of the forward elastic amplitude, $\rho$. Since then an intense debate on the $C$-parity asymptotic nature of the scattering amplitude was initiated. We examine the proton-proton and the antiproton-proton forward data above 10 GeV in the context of an eikonal QCD-based model, where nonperturbative effects are readily included via a QCD effective charge. We show that, despite an overall satisfactory description of the forward data is obtained by a model in which the scattering amplitude is dominated by only crossing-even elastic terms, there is evidence that the introduction of a crossing-odd term may improve the agreement with the measurements of $\rho$ at $\sqrt{s} = 13$ TeV. In the Regge language the dominant even(odd)-under-crossing object is the so called Pomeron (Odderon). Comment: 5 pages, 2 figures, 1 table. Phenomenological approach revised, results and conclusions changed, suggesting now the presence of Odderon effects in forward scattering (once confirmed the TOTEM data at 13 TeV) |
| تدمد: | 0370-2693 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8dcd10ce177579abf886609becfe7d51 https://doi.org/10.1016/j.physletb.2019.135047 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....8dcd10ce177579abf886609becfe7d51 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 03702693 |
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