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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

Interpretation of the measurements of total, elastic, and diffractive cross sections at LHC

TL;DR: In this article, the authors discuss the Miettinen-Pumplin bound for the total, elastic, and diffractive cross sections in pp collisions at very high energy and outline the main difficulties for a consistent interpretation of the data.
Journal ArticleDOI

Soft interaction model and the LHC data.

TL;DR: In this paper, the authors investigated possible causes of the problem, by considering separate fits to the high energy (W > 500GeV ), and low energy (w < 500 GeV ) data, and their new results are moderately higher than their previous predictions.
Journal ArticleDOI

Description of LHC data in a soft interaction model

TL;DR: In this article, the soft interactions at high energy were modeled using a single Pomeron with large intercept Δ P = 0.23 and slope α P ′ = 0, which describes both long and short distance processes.
Journal ArticleDOI

Exploring central opacity and asymptotic scenarios in elastic hadron scattering

TL;DR: In this article, an empirical study on the energy dependence of the ratio X between the elastic and total cross sections is presented, which is related to the evolution of the hadronic central opacity.
Posted Content

Charm production in SIBYLL

TL;DR: SIBYLL 2.1 as mentioned in this paper is an event generator for hadron interactions at the highest energies, and it is commonly used to analyze and interpret extensive air shower measurements.
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
- 07 Sep 2010 - 
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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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