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Open AccessJournal ArticleDOI

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

The TOTEM experiment at the LHC and its physics results

TL;DR: The TOTEM experiment at the LHC has measured proton-proton elastic scattering in dedicated runs at s = 7 and 8 TeV as mentioned in this paper, where the elastic and inelastic cross-sections were derived with different methods by either using the optical theorem or a luminosity independent method.
Journal ArticleDOI

Soft Pomeron in light of the LHC correlated data

TL;DR: In this paper, the authors introduce correlation information between the original and the reanalyzed data sets in a way suitable for a global fitting analysis of all data, and determine the parameters of the soft Pomeron from the Regge theory.
Dissertation

Characterising the Decays of High-pt Top Quarks and Addressing Naturalness with Jet Substructure in ATLAS Runs I and II

TL;DR: In this paper, a search for gluino pair production with decays mediated by stop-and sbottom-squark loops in the initial 14.8 fb−1 of the ATLAS run 2 dataset is presented in terms of a pair of simplified models, which targets extreme regions of phase space using jet substructure techniques.
Journal ArticleDOI

Scaling laws for the elastic scattering amplitude

TL;DR: In this article, the partial differential equation for the imaginary part of the elastic scattering amplitude is derived and solved in the black disk limit, and the asymptotical scaling behavior of the amplitude coinciding with the geometrical scaling is proved.
Journal ArticleDOI

Recent Results from the CERN LHC Experiment TOTEM -- Implications for Odderon Exchange

TL;DR: In this paper, the TOTEM experiment at CERN LHC was summarized, including measurements of the total, elastic and inelastic cross-sections, the nuclear slope parameter $B$, the differential cross-section of elastic scattering and the real to imaginary part ration $\rho$ at $\sqrt{s} = $ 2.76 and 13 TeV.
References
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Review of particle physics

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

Review of Particle Physics

Koji Nakamura, +183 more
- 07 Sep 2010 - 
TL;DR: In this article, a biennial review summarizes much of particle physics using data from previous editions, plus 2158 new measurements from 551 papers, they list, evaluate and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons.
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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