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      Recent CMS and CMS-TOTEM results on diffraction and exclusive production

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          Abstract

          Exclusive and diffractive physics measurements are important for the better understanding of the non-perturbative regime of QCD. Two recent results of the CMS experiment is presented in this paper. The total and differential cross sections of central exclusive \(\pi^+\pi^-\) production are measured at 5.02 and 13 TeV in the \(p_{\mathrm{T}}(\pi) > 0.2~\)GeV/\(c\) and \(|\eta(\pi)| < 2.4\) kinematic region. The invariant mass distribution is fitted by the sum of a continuum and four interfering relativistic Breit-Wigner functions. In the second part of the paper the measurement of the single diffractive dijets is presented, which are studied by using proton tagging capabilities of the TOTEM analysis. A joint CMS-TOTEM study is carried out and the total and differential cross sections are measured in the \(0.03 < |t| < 1.0~\)GeV\(^2\) and \(0 < \xi < 0.1\) kinematic region.

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          Author and article information

          Journal
          17 February 2020
          Article
          2002.06959
          50a190d3-6284-4400-baba-5a1d908c24d4

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
          Custom metadata
          Presented at EDS Blois 2019 Conference, Quy Nhon, Vietnam, June 23--28, 2019
          hep-ex

          High energy & Particle physics
          High energy & Particle physics

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