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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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Journal ArticleDOI

Event generator tunes obtained from underlying event and multiparton scattering measurements

Vardan Khachatryan, +2286 more
- 17 Mar 2016 - 
TL;DR: Combined fits to CMS UE proton–proton data at 7TeV and to UEProton–antiproton data from the CDF experiment at lower s, are used to study the UE models and constrain their parameters, providing thereby improved predictions for proton-proton collisions at 13.
Journal ArticleDOI

Performance of $b$-Jet Identification in the ATLAS Experiment

Georges Aad, +2815 more
- 04 Apr 2016 - 
TL;DR: In this paper, an independent b-tagging algorithm based on the reconstruction of muons inside jets as well as the b tagging algorithm used in the online trigger are also presented.
Journal ArticleDOI

Measurement of proton-proton elastic scattering and total cross-section at \chem{\sqrt {s} = 7\,TeV}

Georgy Antchev, +85 more
- 01 Jan 2013 - 
TL;DR: Antchev et al. as discussed by the authors measured the differential cross-section for proton-proton elastic scattering as a function of the four-momentum transfer squared t at the LHC energy of, under various beam and background conditions, luminosities, and Roman Pot positions.
Journal ArticleDOI

Measurement of inelastic, single- and double-diffraction cross sections in proton--proton collisions at the LHC with ALICE

Johan Alme, +93 more
- 08 Jun 2013 - 
TL;DR: The single- and double-diffractive cross sections were calculated combining relative rates of diffraction with inelastic cross sections and compared to previous measurements at proton–antiproton and proton-proton colliders at lower energies, to measurements by other experiments at the LHC, and to theoretical models.
Journal ArticleDOI

Measurement of the differential cross section for top quark pair production in pp collisions at √s=8 TeV

Vardan Khachatryan, +2125 more
- 17 May 2015 - 
TL;DR: In this article, the normalized differential cross section for top quark pair (tt) production is measured in pp collisions at a centre-of-mass energy of 8TeV at the CERN LHC using the CMS detector in data corresponding to an integrated luminosity of 19.7fb^(−1).
References
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Journal ArticleDOI

Precision measurement of proton-proton total cross section at the CERN intersecting storage rings

Ugo Amaldi, +32 more
- 04 Dec 1978 - 
TL;DR: The measurement of the proton-proton total cross section performed by the CERN-Pisa-Rome-Stony Brook Collaboration at CERN ISR is discussed in detail in this article.
Journal ArticleDOI

Diffraction dissociation in proton?proton collisions at \sqrt{s} = 0.9, 2.76 and 7 TeV with ALICE at the LHC

M G Poghosyan
- 01 Dec 2011 - 
TL;DR: In this paper, the relative rates of single and double-diffractive processes were measured with the ALICE detector by studying properties of gaps in the pseudorapidity distribution of particles produced in proton?proton collisions at = 0.9, 2.76 and 7 TeV.
Journal ArticleDOI

First Measurement of Proton-Proton Elastic Scattering at RHIC

S. Bültmann, +31 more
- 22 Jan 2004 - 
TL;DR: The first result of the pp2pp experiment at RHIC on elastic scattering of polarized protons at s = 200 GeV was reported in this article, where the exponential slope parameter b of the diffractive peak of the elastic cross section in the t range was measured to be b=16.3±1.6 (stat.)±0.9(syst.) (GeV/c)−2.
Journal ArticleDOI

Measurement of the nuclear slope parameter of the pp-bar elastic-scattering distribution at sqrt s =1800 GeV.

Norman A. Amos, +23 more
- 01 Aug 1988 - 
TL;DR: This work has studied proton-antiproton elastic scattering at ..sqrt..s = 1800 GeV at the Fermilab Collider, in the range 0.02 to 0.04 GeV.
Journal ArticleDOI

Ultrahigh energy predictions of proton-air cross sections from accelerator data: An update

Martin M. Block
- 08 Nov 2011 - 
TL;DR: Block and Halzen as mentioned in this paper used a Glauber calculation to estimate the inelastic production cross-section of a proton cosmic ray beam with a 25% helium contamination, and they found a $pp$ total cross-sectional area of 133.4 mb.
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