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First measurement of the total proton-proton cross-section at the LHC energy of √s = 7 TeV

TLDR
TOTEM has measured the differential cross-section for elastic proton-proton scattering at the LHC energy of analysing data from a short run with dedicated large-β* optics as discussed by the authors.
Abstract
TOTEM has measured the differential cross-section for elastic proton-proton scattering at the LHC energy of analysing data from a short run with dedicated large-β* optics. A single exponential fit with a slope B=(20.1±0.2stat±0.3syst) GeV−2 describes the range of the four-momentum transfer squared |t| from 0.02 to 0.33 GeV2. After the extrapolation to |t|=0, a total elastic scattering cross-section of (24.8±0.2stat±1.2syst) mb was obtained. Applying the optical theorem and using the luminosity measurement from CMS, a total proton-proton cross-section of (98.3±0.2stat±2.8syst) mb was deduced which is in good agreement with the expectation from the overall fit of previously measured data over a large range of center-of-mass energies. From the total and elastic pp cross-section measurements, an inelastic pp cross-section of was inferred.

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Journal ArticleDOI

Is the kinematics of special relativity incomplete

Ernst Karl Kunst
- 27 Feb 2014 - 
TL;DR: In this article, a thorough analysis of composite inertial motion within the framework of special relativity leads to the conclusion that every translational motion must be the symmetrically composite (relativistic sum) of a finite number of quanta of velocity.
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High energy interactions of cosmic rays

TL;DR: In this article, a discussion of a number of important topics related to modeling of high energy cosmic ray interactions is presented, including novel theoretical approaches employed in event generators of hadronic interactions and the impact of experimental data from the Large Hadron Collider (LHC).
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TeV Scale Cross-Sections and the Pomeranchuck Singularity

TL;DR: In this article, the detailed structure of l-plane singularities of scattering amplitude saturating the Froissart bound was investigated, and a self-consistent analysis of these singularities provided us secondary terms in the FFR.
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Cosmic-ray physics at CERN

TL;DR: A review of the results obtained by LEP and LHC experiments is presented in this paper along two sessions during the VI School on Cosmic-ray Physics and Astrophysics held at the Mesoamerican Center for Theoretical Physics (MCTP) located in Tuxtla Gutierrez, Chiapas, Mexico.
Dissertation

Luminosity, beam monitoring and triggering for the CMS experiment and measurement of the total inelastic cross-section at √s = 7 TeV

TL;DR: In this paper, a mesure et l'extrapolation aux sections efficaces inelastiques totales effectuee grâce a plusieurs modeles de calculs de Monte-Carlo fournissent d'autres sources d'information interessantes.
References
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TL;DR: Beringer et al. as mentioned in this paper presented a review of particle physics using data from previous editions, plus 2658 new measurements from 644 papers, and summarized searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles.
Journal ArticleDOI

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Koji Nakamura, +183 more
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Journal ArticleDOI

The TOTEM Experiment at the CERN Large Hadron Collider

G. Anelli, +115 more
TL;DR: The TOTEM Experiment as discussed by the authors measured the total pp cross-section with the luminosity-independent method and studied elastic and diffractive scattering at the LHC using two tracking telescopes, T1 and T2.
Journal ArticleDOI

Benchmarks for the forward observables at RHIC, the Tevatron-run II, and the LHC.

TL;DR: These predictions are based on an extensive study of possible analytic parametrizations invoking the largest hadronic dataset available at t=0.1 TeV, and on total cross sections for gammap-->hadrons at cosmic-ray energies and forgammagamma -->hadrons up to sqrt[s]=1 Tev.
Journal ArticleDOI

The energy dependence of the proton-proton total cross-section for centre-of-mass energies between 23 and 53 GeV

TL;DR: The absolute scale of the cross-section was established by determination of the effective density of the colliding beans in their overlap region as mentioned in this paper, which was deduced by extrapolation of the elastic differential crosssection to the forward direction and by application of the optical theorem.
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