CERN Accelerating science

CERN Document Server 2,478 Datensätze gefunden  1 - 10nächsteEnde  gehen zum Datensatz: Die Suche hat 0.63 Sekunden gedauert. 
1.
Measurement of the hard exclusive π0 muoproduction cross section at COMPASS / COMPASS Collaboration
A new and detailed measurement of the cross section for hard exclusive neutral-pion muoproduction on the proton was performed in a wide kinematic region, with the photon virtuality Q2 ranging from 1 to 8 (GeV/c)2 and the Bjorken variable xBj ranging from 0.02 to 0.45. [...]
arXiv:2412.19923.
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Fulltext
2.
Search for charged Higgs bosons produced in top-quark decays or in association with top quarks and decaying via H±τ±ντ in 13 TeV pp collisions with the ATLAS detector / ATLAS Collaboration
Charged Higgs bosons produced either in top-quark decays or in association with a top-quark, subsequently decaying via H±τ±ντ, are searched for in 140 fb1 of proton-proton collision data at s=13 TeV recorded with the ATLAS detector. [...]
arXiv:2412.17584 ; CERN-EP-2024-311.
- 2024 - 43.
Fulltext - Previous draft version - Fulltext
3.
Energy scale and resolution for anti-kt jets with radius parameters R=0.2 and 0.6 measured in proton-proton collisions at s=13 TeV with the ATLAS detector / ATLAS Collaboration
Jets with different radius parameters R are an important tool to probe quantum chromodynamics processes at different angular scales. [...]
arXiv:2412.15783 ; CERN-EP-2024-339.
- 2024 - 63.
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4.
New measurements of transverse spin asymmetries at COMPASS / Martin, Anna (Trieste U.) /COMPASS Collaboration
The recent developments in the description of the 3D structure of the nucleon have highlighted the relevance of SIDIS measurements with transversely polarized nucleons. The phenomenological analyses have also highlighted how the scarcity of SIDIS data collected with neutron or deuterium targets limits the knowledge of the parton distribution functions, in particular for the d quark.In the year 2022, the COMPASS experiment at CERN took data using a transversely polarised deuteron target and a 160 GeV muon beam at CERN, to balance the existing proton target data.Detailed studies had shown how those data would lead to significant progress in the knowledge of the transversity distributions.First preliminary results for the Collins and Sivers asymmetries from part of the 2022 data have already been produced, they are in line with expectations and are shown here for the first time..
2024 - 8 p. - Published in : PoS SPIN2023 (2024) 065 Fulltext: PDF;
In : 24th International Spin Symposium, Durham, USA, 24 - 29 Sep 2023, pp.065
5.
Azimuthal anisotropies of charged particles with high transverse momentum in Pb+Pb collisions at 5.02 TeV with the ATLAS detector at the LHC / ATLAS Collaboration
A measurement is presented of elliptic (v2) and triangular (v3) azimuthal anisotropy coefficients for charged particles produced in Pb+Pb collisions at sNN=5.02 TeV using a data set corresponding to an integrated luminosity of 435 μb1 collected with the ATLAS detector at the LHC in 2018. [...]
arXiv:2412.15658 ; CERN-EP-2024-334.
- 2024 - 54.
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6.
Differential cross-section measurements of D± and Ds± meson production in proton-proton collisions at s=13 TeV with the ATLAS detector / ATLAS Collaboration
The production of D± and Ds± charmed mesons is measured using the D±/Ds±ϕ(μμ)π± decay channel with 137 fb1 of s=13 TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider during the years 2016-2018. [...]
arXiv:2412.15742 ; CERN-EP-2024-322.
- 2024 - 44.
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7.
Observation of VVZ production at s=13 TeV with the ATLAS detector / ATLAS Collaboration
A search for the production of three massive vector bosons, VVZ(V=W,Z), in proton-proton collisions at s=13 TeV is performed using data with an integrated luminosity of 140 fb1 recorded by the ATLAS detector at the Large Hadron Collider. [...]
arXiv:2412.15123 ; CERN-EP-2024-321.
- 2024 - 42.
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8.
Expected Tracking Performance of the ATLAS Inner Tracker at the High-Luminosity LHC / ATLAS Collaboration
The high-luminosity phase of LHC operations (HL-LHC), will feature a large increase in simultaneous proton-proton interactions per bunch crossing up to 200, compared with a typical leveling target of 64 in Run 3. [...]
arXiv:2412.15090 ; CERN-EP-2024-342.
- 2024 - 52.
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9.
Improved reconstruction of highly boosted τ-lepton pairs in the ττ(μνμντ)(hadrons+ντ) decay channels with the ATLAS detector / ATLAS Collaboration
This paper presents a new τ-lepton reconstruction and identification procedure at the ATLAS detector at the Large Hadron Collider, which leads to significantly improved performance in the case of physics processes where a highly boosted pair of τ-leptons is produced and one τ-lepton decays into a muon and two neutrinos (τμ), and the other decays into hadrons and one neutrino (τhad). [...]
arXiv:2412.14937 ; CERN-EP-2024-289.
- 2024 - 44.
Fulltext - Previous draft version - Fulltext
10.
Search for Higgs boson decays into a pair of pseudoscalar particles in the γγτhadτhad final state using pp collisions at s=13 TeV with the ATLAS detector / ATLAS Collaboration
A search for exotic decays of the 125 GeV Higgs boson into a pair of new spin-0 particles, Haa, where one decays into a photon pair and the other into a τ-lepton pair, is presented. [...]
arXiv:2412.14046 ; CERN-EP-2024-323.
- 2024 - 37.
Fulltext - Previous draft version - Fulltext

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