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Open AccessJournal ArticleDOI

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

Georgy Antchev, +82 more
- 01 Oct 2011 - 
- Vol. 96, Iss: 2, pp 21002-21012
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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MBR Monte Carlo Simulation in PYTHIA8

Robert Ciesielski, +1 more
- 07 May 2012 - 
TL;DR: In this article, the authors present the MBR (Minimum Bias Rockefeller) Monte Carlo simulation of (anti)proton-proton interactions and its implementation in the PYTHIA8 event generator.
Journal ArticleDOI

Operation and performance of the ATLAS Semiconductor Tracker

Nick Barlow
TL;DR: The Semiconductor Tracker (SCT) as discussed by the authors is a key component of the ATLAS Inner Detector, which is used to track charged particles in the region around the point where proton-proton collisions occur.
Journal ArticleDOI

Measurement of the forward charged-particle pseudorapidity density in pp collisions at √s = 7 TeV with the TOTEM experiment

G. Antchev, +82 more
- 08 May 2012 - 
TL;DR: The TOTEM experiment has measured the charged-particle pseudorapidity density dNch/d? in pp collisions at for 5.3 <|?|<6.4 in events with at least one charged particle with transverse momentum above 40?MeV/c in this pseudoreapidity range as mentioned in this paper.
Journal ArticleDOI

Sources of machine-induced background in the ATLAS and CMS detectors at the CERN Large Hadron Collider

Roderik Bruce, +13 more
- 21 Nov 2013 - 
TL;DR: In this paper, the authors estimate the losses on the collimators with SixTrack and simulate the showers with FLUKA and MARS to obtain the flux and distribution of particles entering the ATLAS and CMS detectors.
Journal ArticleDOI

Measurement of Double-Differential Cross Sections for Top Quark Pair Production in Pp Collisions at √s = 8 TeV and Impact on Parton Distribution Functions

Albert M. Sirunyan, +2210 more
- 11 Jul 2017 - 
TL;DR: Normalized double-differential cross sections for top quark pair production are measured in pp collisions at a centre-of-mass energy of 8 with the CMS experiment at the LHC as mentioned in this paper.
References
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Juerg Beringer
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Koji Nakamura, +183 more
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The TOTEM Experiment at the CERN Large Hadron Collider

G. Anelli, +115 more
- 01 Aug 2008 - 
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

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Jean-René Cudell, +9 more
- 11 Nov 2002 - 
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

Ugo Amaldi, +9 more
- 02 Apr 1973 - 
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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