CERN Accelerating science

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1.
Evidence for Non-Exponential Elastic Proton-Proton Differential Cross-Section at Low |t| and $\sqrt{s}$ = 8 TeV by TOTEM / Antchev, G. (Sofiya, Inst. Nucl. Res.) ; Aspell, P. (CERN) ; Atanassov, I. (CERN ; Sofiya, Inst. Nucl. Res.) ; Avati, V. (CERN) ; Baechler, J. (Case Western Reserve U. ; CERN) ; Berardi, V. (INFN, Bari) ; Berretti, M. (INFN, Pisa ; INFN, Siena) ; Bossini, E. (CERN) ; Bottigli, U. (INFN, Siena ; U. Siena (main)) ; Bozzo, M. (Genoa U. ; INFN, Genoa) 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. [...]
arXiv:1503.08111; CERN-PH-EP-2015-083; CERN-PH-EP-2015-083.- Geneva : CERN, 2015-10 - 20 p. - Published in : Nucl. Phys. B 899 (2015) 527-546 Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: PDF; Preprint: PDF; External link: Preprint
2.
First measurement of elastic, inelastic and total cross-section at sqrt(s)= 13 TeV by TOTEM and overview of cross-section data at LHC energies / TOTEM Collaboration
The TOTEM collaboration has measured the proton-proton total cross section at $\sqrt{s}=13$ TeV with a luminosity-independent method. Using dedicated $\beta^{*}=90$ m beam optics, the Roman Pots were inserted very close to the beam. [...]
arXiv:1712.06153; CERN-EP-2017-321; CERN-EP-2017-321-V2.- Geneva : CERN, 2019-02-01 - 16 p. - Published in : Eur. Phys. J. C 79 (2019) 103 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: arXiv:1712.06153 - PDF; cross_section_measurement_at_13_TeV_CERN-EP-2017-321-02 - PDF; CERN-EP-2017-321 - PDF; Fulltext from Publisher: PDF;
3.
Measurement of Elastic pp Scattering at $\sqrt{s}$ = 8 TeV in the Coulomb-Nuclear Interference Region – Determination of the $\rho$ Parameter and the Total Cross-Section / TOTEM collaboration
The TOTEM experiment at the CERN LHC has measured elastic proton-proton scattering at the centre-of-mass energy $\sqrt{s}$ = 8 TeV and four-momentum transfers squared, $|t|$, from $6\times10^{-4}$ GeV$^2$ to 0.2 GeV$^2$. Near the lower end of the $t$-interval the differential cross-section is sensitive to the interference between the hadronic and the electromagnetic scattering amplitudes. [...]
arXiv:1610.00603; CERN-PH-EP-2015-325; TOTEM-2015-002; CERN-PH-EP-2015-325; TOTEM-2015-002.- Geneva : CERN, 2016-11-30 - 31 p. - Published in : Eur. Phys. J. C 76 (2016) 661 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF; External link: Preprint
4.
Elastic differential cross-section ${\rm d}\sigma/{\rm d}t$ at $\sqrt{s}=$2.76 TeV and implications on the existence of a colourless 3-gluon bound state / TOTEM Collaboration
The proton-proton elastic differential cross section dσ /dt has been measured by the TOTEM exper- iment at √s = 2.76 TeV energy with Beta∗ = 11 m beam optics. The Roman Pots were inserted to 13 times the transverse beam size from the beam, which allowed to measure the differential cross- section of elastic scattering in a range of the squared four-momentum transfer (|t|) from 0.36 GeV2 to 0.74 GeV2. [...]
arXiv:1812.08610; CERN-EP-2018-341; TOTEM-2018-002.- Geneva : CERN, 2020-02-05 - 10 p. - Published in : Eur. Phys. J. C 80 (2020) 91 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: 1812.08610 - PDF; CERN-EP-2018-341 - PDF;
5.
Elastic differential cross-section measurement at $\sqrt{s}=13$  TeV by TOTEM / TOTEM Collaboration
The TOTEM collaboration has measured the elastic proton-proton differential cross section dσ/dt at √s = 13 TeV LHC energy using dedicated beta∗ = 90 m beam optics. The Roman Pot detectors were inserted to 10σ distance from the LHC beam, which allowed the measurement of the range [0.04 GeV**2;4 GeV**2] in four-momentum transfer squared |t|. [...]
arXiv:1812.08283; CERN-EP-2018-338; TOTEM-2018-003.- Geneva : CERN, 2019-10-19 - 20 p. - Published in : Eur. Phys. J. C 79 (2019) 861 Draft (restricted): PDF; Fulltext: CERN-EP-2018-338 - PDF; 1812.08283 - PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;
6.
Characterisation of the dip-bump structure observed in proton–proton elastic scattering at $\sqrt{s}$ = 8 TeV / TOTEM Collaboration
The TOTEM collaboration at the CERN LHC has measured the differential cross-section of elastic proton-proton scattering at $\sqrt{s} = 8\ {\rm TeV}$ in the squared four-momentum transfer range $0.2\ {\rm GeV^{2}} < |t| < 1.9\ {\rm GeV^{2}}$. This interval includes the structure with a diffractive minimum ("dip") and a secondary maximum ("bump") that has also been observed at all other LHC energies, where measurements were made. [...]
arXiv:2111.11991; CERN-EP-2021-242.- 2022-03-26 - 6 p. - Published in : Eur. Phys. J. C 82 (2022) 263 Draft (restricted): PDF; Fulltext: document - PDF; 2111.11991 - PDF; CERN-EP-2021-242 - PDF; Publication - PDF;
7.
Diamond Detectors for the TOTEM Timing Upgrade / TOTEM Collaboration
This paper describes the design and the performance of the timing detector developed by the TOTEM Collaboration for the Roman Pots (RPs) to measure the Time-Of-Flight (TOF) of the protons produced in central diffractive interactions at the LHC. The measurement of the TOF of the protons allows the determination of the longitudinal position of the proton interaction vertex and its association with one of the vertices reconstructed by the CMS detectors. [...]
arXiv:1701.05227; CERN-EP-2016-317; CERN-PH-EP-2016-317.- Geneva : CERN, 2017-03-09 - 28 p. - Published in : JINST 12 (2017) P03007 Fulltext: 10.1088_1748-0221_12_03_P03007 - PDF; 1701.05227 - PDF; arXiv:1701.05227 - PDF;
8.
Comparison of $pp$ and $p \bar{p}$ differential elastic cross sections and observation of the exchange of a colorless $C$-odd gluonic compound / D0 Collaboration
We describe a quantitative analysis comparing the p anti-p elastic cross section as measured by the D0 Collaboration at a center-of-mass energy of 1.96 TeV to that in pp collisions as measured by the TOTEM Collaboration at 2.76, 7, 8, and 13 TeV using a mainly model-independent approach. The TOTEM cross sections extrapolated to a center-of-mass energy of sqrt(s) = 1.96 TeV are compared with the D0 measurement in the region of the diffractive minimum and the second maximum of the pp cross section. [...]
arXiv:2012.03981; FERMILAB-PUB-20-568-E; CERN-EP-2020-236.- Geneva : CERN, 2021-08-04 - 9 p. - Published in : Phys. Rev. Lett. 127 (2021) 062003 Draft (restricted): PDF; Fulltext: fermilab-pub-20-568-e - PDF; CERN-EP-2020-236 - PDF; 2012.03981 - PDF; Fulltext from Publisher: PDF; External links: CERN Courier article; Fermilab Library Server (fulltext available); Interactions.org article; Sci News article; CERN News article; Gizmodo article; Phys.org article; Fermilab News article; SciTechDaily article
9.
Observation of proton-tagged, central (semi)exclusive production of high-mass lepton pairs in pp collisions at 13 TeV with the CMS-TOTEM precision proton spectrometer / CMS and TOTEM Collaboration
The process pp$\to\ell^+\ell^-$p$^{(*)}$, with $\ell^+\ell^-$ a muon or an electron pair produced at midrapidity with mass larger than 110 GeV, has been observed for the first time at the LHC in pp collisions at $\sqrt{s} =$ 13 TeV. One of the two scattered protons is measured in the CMS-TOTEM precision proton spectrometer (CT-PPS), which operated for the first time in 2016. [...]
arXiv:1803.04496; CMS-PPS-17-001; TOTEM 2018-001; CERN-EP-2018-014; CMS-PPS-17-001-003.- Geneva : CERN, 2018-07-24 - 41 p. - Published in : JHEP 07 (2018) 153 Article from SCOAP3: PDF; Fulltext: PDF; External link: Figures, tables and other information
10.
Search for high-mass exclusive $ \gamma\gamma \to \mathrm{W}\mathrm{W} $ and $ \gamma\gamma \to \mathrm{Z}\mathrm{Z} $ production in proton-proton collisions at $ \sqrt{s}= $ 13 TeV / CMS Collaboration
A search is performed for exclusive high-mass $ \gamma\gamma \to \mathrm{W}\mathrm{W} $ and $ \gamma\gamma \to \mathrm{Z}\mathrm{Z} $ production in proton-proton collisions using intact forward protons reconstructed in near-beam detectors, with both weak bosons decaying into boosted and merged jets. The analysis is based on a sample of proton-proton collisions collected by the CMS and TOTEM experiments at $ \sqrt{s}= $ 13 TeV, corresponding to an integrated luminosity of 100 fb$ ^{-1} $. [...]
arXiv:2211.16320; CMS-SMP-21-014; TOTEM-2022-002; CERN-EP-2022-177; CMS-SMP-21-014-003.- Geneva : CERN, 2023-07-31 - 52 p. - Published in : JHEP 2307 (2023) 229 Fulltext: PDF; Fulltext from Publisher: PDF; External links: Additional information for the analysis; CMS AuthorList

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