CERN Accelerating science

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1.
Observation of $VVZ$ production at $\sqrt{s}=13$ 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 $\sqrt{s} = 13$ TeV is performed using data with an integrated luminosity of $140$ fb$^{-1}$ recorded by the ATLAS detector at the Large Hadron Collider. [...]
arXiv:2412.15123 ; CERN-EP-2024-321.
- 2024 - 42.
Fulltext - Previous draft version - Fulltext
2.
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 p, 52.
Fulltext - Previous draft version - Fulltext
3.
Improved reconstruction of highly boosted $\tau$-lepton pairs in the $\tau\tau\rightarrow(\mu\nu_{\mu}\nu_{\tau})({hadrons}+\nu_{\tau})$ decay channels with the ATLAS detector / ATLAS Collaboration
This paper presents a new $\tau$-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 $\tau$-leptons is produced and one $\tau$-lepton decays into a muon and two neutrinos ($\tau_{\mu}$), and the other decays into hadrons and one neutrino ($\tau_{had}$). [...]
arXiv:2412.14937 ; CERN-EP-2024-289.
- 2024 - 44 p, 44.
Fulltext - Previous draft version - Fulltext
4.
Search for Higgs boson decays into a pair of pseudoscalar particles in the $\gamma\gamma\tau_{\text{had}}\tau_{\text{had}}$ final state using $pp$ collisions at $\sqrt{s}=13$ 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, $H \to aa$, where one decays into a photon pair and the other into a $\tau$-lepton pair, is presented. [...]
arXiv:2412.14046 ; CERN-EP-2024-323.
- 2024 - 37.
Fulltext - Previous draft version - Fulltext
5.
Test of lepton flavour universality in $W$-boson decays into electrons and $\tau$-leptons using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A measurement of the ratio of the branching fractions, $R_{\tau/e} = B(W \to \tau \nu)/ B(W \to e \nu)$, is performed using a sample of $W$ bosons originating from top-quark decays to final states containing $\tau$-leptons or electrons. [...]
arXiv:2412.11989 ; CERN-EP-2024-315.
- 2024 - 50 p, 50.
Fulltext - Previous draft version - Fulltext
6.
Cross-section measurements for the production of a $W$-boson in association with high-transverse-momentum jets in $pp$ collisions at $\sqrt{s}$= 13 TeV with the ATLAS detector / ATLAS Collaboration
A set of measurements for the production of a $W$-boson in association with high-transverse-momentum jets is presented using 140 fb$^{-1}$ of proton-proton collision data at a centre-of-mass energy of $\sqrt{s}=13$ TeV collected by the ATLAS detector at the LHC. [...]
arXiv:2412.11644 ; CERN-EP-2024-277.
- 2024 - 51.
Fulltext - Previous draft version - Fulltext
7.
EOS software evolution enabling LHC Run 3 / Caffy, Cedric (CERN) ; Amadio, Guilherme (CERN) ; Guenther, Jaroslav (CERN) ; Lekshmanan, Abhishek (CERN) ; Mascetti, Luca (CERN) ; Peters, Andreas (CERN) ; Reis, Manuel (CERN) ; Simon, Michal Kamil (CERN) ; Sindrilaru, Elvin (CERN) ; Smith, David (CERN)
EOS has been the main storage system at CERN for more than a decade, continuously improving in order to meet the ever evolving requirements of the LHC experiments and the whole physics user community. In order to satisfy the demands of LHC Run-3, in terms of storage performance and tradeoff between cost and capacity, EOS was enhanced with a set of new functionalities and features that we will detail in this paper.First of all, we describe the use of erasure coded layouts in a large-scale deployment which enables an efficient use of available storage capacity, while at the same time providing end-users with better throughput when accessing their data. [...]
2024 - 8 p. - Published in : EPJ Web Conf. 295 (2024) 01022 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.01022
8.
I/O performance studies of analysis workloads on production and dedicated resources at CERN / Sciabà, Andrea (CERN) ; Blomer, Jakob (CERN) ; Canal, Philippe (Fermilab) ; Duellmann, Dirk (CERN) ; Guiraud, Enrico (CERN) ; Naumann, Axel (CERN) ; Padulano, Vincenzo Eduardo (CERN) ; Panzer-Steindel, Bernd (CERN) ; Peters, Andreas (CERN) ; Schulz, Markus (CERN) et al.
The recent evolutions of the analysis frameworks and physics data formats of the LHC experiments provide the opportunity of using central analysis facilities with a strong focus on interactivity and short turnaround times, to complement the more common distributed analysis on the Grid. In order to plan for such facilities, it is essential to know in detail the performance of the combination of a given analysis framework, of a specific analysis and of the installed computing and storage resources. [...]
FERMILAB-CONF-24-0689-CSAID.- 2024 - 9 p. - Published in : EPJ Web Conf. 295 (2024) 07025 Fulltext: 9b80f56360993741399aef5f272f8af7 - PDF; document - PDF; External link: Fermilab Library Server
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.07025
9.
XRootD Client: A robust technology for LHC Run-3 and beyond / Amadio, Guilherme (CERN) ; Caffy, Cedric (CERN) ; Hanushevsky, Andrew Bohdan (SLAC) ; Simon, Michał Kamil (CERN) ; Smith, David (CERN)
During the LHC era the XRootD framework has proven to be a critical component of numerous data management and software defined storage solutions (most importantly EOS, the CERN storage technology used for the LHC experiments), and as such grew into one of the most strategic storage technologies in the High Energy Physics (HEP) community. Over the last year significant developments in the area of the XRootD client have been introduced, making it even more reliable and robust, as well as easier to debug. [...]
2024 - 7 p. - Published in : EPJ Web Conf. 295 (2024) 01056 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.01056
10.
Precision calibration of calorimeter signals in the ATLAS experiment using an uncertainty-aware neural network / ATLAS Collaboration
The ATLAS experiment at the Large Hadron Collider explores the use of modern neural networks for a multi-dimensional calibration of its calorimeter signal defined by clusters of topologically connected cells (topo-clusters). [...]
arXiv:2412.04370 ; CERN-EP-2024-317.
- 2024 - 72.
Fulltext - Previous draft version - Fulltext

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1 Smith, D Shane
211 Smith, D A
1 Smith, D Adu
12 Smith, D B
3 Smith, D C
1 Smith, D C P
1 Smith, D Cinabro M J
9 Smith, D D
9 Smith, D E
1 Smith, D Eric
3 Smith, D F
1 Smith, D G
1 Smith, D Geoffrey
2 Smith, D H
3 Smith, D Hudson
37 Smith, D J
32 Smith, D J B
35 Smith, D L
51 Smith, D M
9 Smith, D M D
1 Smith, D N
28 Smith, D R
27 Smith, D S
6 Smith, D W
44 Smith, D.
1 Smith, D. W
40 Smith, D.J.B.
1 Smith, D.M.
3 Smith, D.R.
5 Smith, D.S.
1 Smith, D.Shane
1 Smith, Dale
6 Smith, Dale Shane
1 Smith, Dale T
1 Smith, Dallas
5 Smith, Dan
2 Smith, Dan J B
1 Smith, Dana K
7 Smith, Daniel
1 Smith, Daniel C
1 Smith, Daniel G.
16 Smith, Daniel J B
1 Smith, Daniel J.B.
1 Smith, Daniella
1 Smith, Danielle Elliott
1 Smith, Darryl B
1 Smith, Darryl L
6 Smith, Dave
46 Smith, David
6 Smith, David A
2 Smith, David Adu
1 Smith, David Andrew
1 Smith, David C
1 Smith, David D
2 Smith, David E
11 Smith, David Eugene
19 Smith, David J
1 Smith, David K
1 Smith, David L
1 Smith, David Livingstone
17 Smith, David M
2 Smith, David M D
2 Smith, David Martin
2 Smith, David P
25 Smith, David R
1 Smith, David R.
1 Smith, David Ryan
2 Smith, David S
3 Smith, David W
1 Smith, Deane K
2 Smith, Debra
1 Smith, Dennis B
1 Smith, Dennis H
5 Smith, Derek
1 Smith, Devin
1 Smith, Devin H
1 Smith, Diana
1 Smith, Diana McLain
2 Smith, Dodie
521 Smith, Dominic
14 Smith, Dominik
1 Smith, Donald
6 Smith, Donald F
2 Smith, Donald J
2 Smith, Donald R
14 Smith, Dori
218 Smith, Douglas
1 Smith, Douglas A
1 Smith, Douglas B
1 Smith, Douglas E
1 Smith, Douglas George
13 Smith, Douglas J
2 Smith, Douglas K
1 Smith, Douglas R
1 Smith, Douglas Richard Leonard
1 Smith, Drew
2 Smith, Duncan
94 Smith, Dylan Ronald
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