CERN Accelerating science

TOTEM Papers

Evidence for Non-Exponential Elastic Proton-Proton Differential Cross-Section at Low |t| and sqrt(s) = 8 TeV by TOTEM / Antchev, G. ; Aspell, P. ; Atanassov, I. ; Avati, V. ; Baechler, J. ; Berardi, V. ; Berretti, M. ; Bossini, E. ; Bottigli, U.; ; Bozzo, M. et al.
The TOTEM experiment has made a precise measurement of the elastic proton-proton differential cross-section at the centre-of-mass energy sqrt(s) = 8TeV based on a high-statistics data sample obtained with the beta* = 90m optics. Both the statistical and systematic uncertainties remain below 1%, except for the t-independent contribution from the overall normalisation. [...]
CERN-PH-EP-2015-083; arXiv:1503.08111.- Geneva : CERN, 2015 - 16. Draft (restricted): PDF; Fulltext: CERN-PH-EP-2015-083 - PDF; arXiv:1503.08111 - PDF; External link: Fulltext

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Measurement of the forward charged particle pseudorapidity density in pp collisions at √s = 8 TeV using a displaced interaction point / TOTEM Collaboration
The the pseudorapidity density of charged particles dN$_{ch}$/d$\eta$ is measured by the TOTEM experiment in pp collisions at √s = 8 TeV within the range 3.9 < $\eta$ < 4.7 and −6.95 < $\eta$ < −6.9. [...]
arXiv:1411.4963 ; CERN-PH-EP-2014-260.
- 2014. - 9 p.
Preprint - Draft (restricted) - arXiv Preprint - Full text

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Measurement of pseudorapidity distributions of charged particles in proton-proton collisions at $\sqrt{s}$ = 8 TeV by the CMS and TOTEM experiments / CMS and TOTEM Collaborations
Pseudorapidity ($\eta$) distributions of charged particles produced in proton-proton collisions at a centre-of-mass energy of 8 TeV are measured in the ranges abs($\eta$) < 2.2 and 5.3 < abs($\eta$) < 6.4 covered by the CMS and TOTEM detectors, respectively. The data correspond to an integrated luminosity of 45 inverse microbarns. [...]
arXiv:1405.0722; CMS-FSQ-12-026; CERN-PH-EP-TOTEM-2014-002; CERN-PH-EP-2014-063.- Geneva : CERN, 2014 - 36 p. - Published in : Eur. Phys. J. C 74 (2014) 3053 Springer Open Access article: PDF; External link: Preprint

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LHC Optics Measurement with Proton Tracks Detected by the Roman Pots of the TOTEM Experiment / TOTEM collaboration
Precise knowledge of the beam optics at the LHC is crucial to fulfil the physics goals of the TOTEM experiment, where the kinematics of the scattered protons is reconstructed with the near-beam telescopes -- so-called Roman Pots (RP). Before being detected, the protons' trajectories are influenced by the magnetic fields of the accelerator lattice. [...]
arXiv:1406.0546; CERN-PH-EP-2014-066.- Geneva : CERN, 2014 - 17 p. - Published in : New J. Phys. 16 (2014) 103041 Draft (restricted): PDF; Fulltext: CERN-PH-EP-2014-066_3 - PDF; arXiv:1406.0546 - PDF; External link: Preprint

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Performance of the Totem Detectors at the LHC / TOTEM Collaboration
The TOTEM Experiment is designed to measure the total proton-proton cross-section with the luminosity-independent method and to study elastic and diffractive pp scattering at the LHC. To achieve optimum forward coverage for charged particles emitted by the pp collisions in the interaction point IP5, two tracking telescopes, T1 and T2, are installed on each side of the IP in the pseudorapidity region 3.1 $\le |\eta| \le $6.5, and special movable beam-pipe insertions – called Roman Pots (RP) – are placed at distances of ±147m and ±220m from IP5. [...]
arXiv:1310.2908; CERN-PH-EP-2013-173; TOTEM-2013–02.- Geneva : CERN, 2013 - 34 p. - Published in : Int. J. Mod. Phys. A 28 (2013) 1330046 Draft (restricted): PDF; Fulltext: PDF; External link: Preprint

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Double diffractive cross-section measurement in the forward region at LHC / TOTEM Collaboration
The first double diffractive cross-section measurement in the very forward region has been carriedout by the TOTEM experiment at the LHC with center-of-mass energy of √s = 7 TeV. By utilizingthe very forward TOTEM tracking detectors T1 and T2, which extend up to pseudo rapidity |$\eta$|=6.5, a clean sample of double diffractive pp events was extracted. [...]
arXiv:1308.6722; CERN-PH-EP-2013-170.- Geneva : CERN, 2013 - 5 p. - Published in : Phys. Rev. Lett. 111 (2013) 262001 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: PDF;

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Luminosity-Independent Measurement of the Proton-Proton Total Cross Section at $\sqrt{s}$ = 8 TeV / TOTEM Collaboration
TOTEM has measured the proton-proton total cross-section at $\sqrt{s}$ = 8 TeV using a luminosity independent method. In LHC fills with dedicated beam optics, the Roman Pots have been inserted very close to the beam allowing the detection of 90% of the nuclear elastic scattering events. [...]
TOTEM-2012-005; CERN-PH-EP-2012-354.- Geneva : CERN, 2013 - 8 p. - Published in : Phys. Rev. Lett. 111 (2013) 012001 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: PDF;

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Luminosity-independent measurements of total, elastic and inelastic cross-sections at $\sqrt{s}$ = 7 TeV / TOTEM Collaboration
The TOTEM experiment at the LHC has performed the first luminosity-independent determination of the total proton-proton cross-section at sqrt(s) = 7TeV. [...]
TOTEM-2012-004 ; CERN-PH-EP-2012-353.
- 2012. - 7 p.
Full text - Draft (restricted)

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Measurement of proton-proton inelastic scattering cross-section at $\sqrt{s}$= 7 TeV / TOTEM Collaboration
The TOTEM experiment at the LHC has measured the inelastic proton-proton cross-section at $\sqrt{s}$ = 7 TeV in a β* = 90 m run with low inelastic pile-up [...]
TOTEM-2012–003 ; CERN-PH-EP-2012-352.
- 2012. - 11 p.
Full text - Draft (restricted)

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Measurement of proton-proton elastic scattering and total cross-section at $\sqrt{s}$ = 7 TeV / TOTEM collaboration
At the LHC energy of $\sqrt{s}$ = 7 TeV, under various beam and background conditions, luminosities, and Roman Pot positions, TOTEM has measured the differential cross-section for proton-proton elastic scattering as a function of the four-momentum transfer squared t. The results of the different analyses are in excellent agreement demonstrating no sizeable dependence on the beam conditions. [...]
TOTEM-2012-002; CERN-PH-EP-2012-239.- Geneva : CERN, 2013 - 12 p. - Published in : EPL 101 (2013) 21002 Draft (restricted): PDF; Fulltext: PDF; IOP Open Access article: PDF;

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