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ATLAS Notes

Latest additions:
2025-07-28
12:48
Top-quark pair production in Pb+Pb collisions in the ATLAS experiment / Potepa, Patrycja Anna (AGH University of Krakow (PL))
In relativistic heavy-ion collisions, top quarks are expected to be attractive candidates for probing the quark-gluon plasma as well as to bring unique information about the time evolution of strongly interacting matter. [...]
ATL-PHYS-PROC-2025-049.
- 2025 - 4.
Original Communication (restricted to ATLAS) - Full text

Detailed record
2025-07-28
12:45
SUSY Highlight from ATLAS and CMS: Recent results in electroweak searches for compressed mass spectra / Ballabene, Eric (Universita e INFN, Bologna (IT))
Supersymmetry (SUSY) models featuring small mass splittings between one or more particles and the lightest neutralino could solve the hierarchy problem as well as offer a suitable dark matter candidate consistent with the observed thermal-relic dark matter density. [...]
ATL-PHYS-PROC-2025-048.
- 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

Detailed record
2025-07-17
20:20
Top-quark pair production in heavy-ion collisions in the ATLAS experiment / Potepa, Patrycja Anna (AGH University of Krakow (PL))
Measurements of top-quark pairs in heavy-ion collisions are expected to provide novel probes of nuclear parton distribution functions as well as to bring unique information about the time evolution of strongly interacting matter. [...]
ATL-PHYS-PROC-2025-047.
- 2025 - 6.
Original Communication (restricted to ATLAS) - Full text

Detailed record
2025-07-16
19:48
Extended thermal cycling of ATLAS ITk strip modules with and without stress mitigating interposers / Liu, Jesse (University of Cambridge (GB)) ; Hommels, Bart (University of Cambridge (GB)) ; Fomin, Nikolai (University of Cambridge (GB)) ; Ivison, Thomas Burgess (University of Cambridge (GB)) ; Kariyapperuma, Gayani Kosala (University of Cambridge (GB))
This paper investigates critical mechanical failures during stand-alone thermocycling of ATLAS Inner Tracker strip pre-production modules. [...]
ATL-ITK-PROC-2025-019.
- 2025 - 46.
Original Communication (restricted to ATLAS) - Full text

Detailed record
2025-07-16
11:58
Summary Plot of Lepton Flavour Universality Measurements using $t\bar{t}$ Events July 2025
This note presents a summary plot of the results of three ATLAS analyses which test the universality of the lepton couplings to $W$-bosons using top$-$anti-top events as of July 2025..
ATL-PHYS-PUB-2025-032.
- 2025 - 3.
Original Communication (restricted to ATLAS) - Full text

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2025-07-15
12:12
Precision and rare ElectroWeak processes / Giuli, Francesco (INFN e Universita Roma Tor Vergata (IT))
Proceeding of the Thirteenth Annual Large Hadron Collider Physics (LHCP2025), 5-9 May 2025, Taipei
ATL-PHYS-PROC-2025-046.
- 2025 - 11.
Original Communication (restricted to ATLAS) - Full text

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2025-07-14
10:21
Measurements of $J/\psi$ and impact of coincident photon induced processes in ultra-peripheral Pb+Pb collisions at $\sqrt{s_{\textrm{NN}}}=5.36$ TeV with the ATLAS detector / Dyndal, Mateusz (AGH University of Krakow (PL))
The fully stripped ions used in heavy ion collisions at the LHC are an excellent source of high-energy quasi-real photons. [...]
ATL-PHYS-PROC-2025-045.
- 2025 - 4.
Original Communication (restricted to ATLAS) - Full text

Detailed record
2025-07-14
10:12
Prospects for Higgs Boson Research at the LHC / Sopczak, Andre (Czech Technical University in Prague (CZ))
The search for Higgs bosons in the Standard Model (SM) of particle physics and Beyond the Standard Model (BSM) started intensively at the Large-Electron-Positron (LEP) collider, which operated from 1989 to 2000, and later at the Tevatron from 2001 to 2011. [...]
ATL-PHYS-PROC-2025-044.
- 2025 - 18.
Original Communication (restricted to ATLAS) - Full text

Detailed record
2025-07-09
15:31
Search for a resonance decaying into a scalar particle and a Higgs boson in the final state with two bottom quarks and two photons with 199 fb$^{−1}$ of data collected at √s=13 TeV and √s=13.6 TeV with the ATLAS detector.
A search for the resonant production of a heavy scalar $X$ decaying into a Higgs boson and a lighter scalar $S$, through the process $X \rightarrow S (\rightarrow b \bar{b})H ( \rightarrow \gamma\gamma)$, where the two photons are consistent with the Higgs boson decay, is performed. [...]
ATLAS-CONF-2025-009.
- 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

Detailed record
2025-07-07
16:19
Observation of a cross-section enhancement near the $t\bar{t}$ production threshold in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
A measurement is presented of $t\bar{t}$ production in the invariant-mass region near the pair production threshold, $m_{t\bar{t}} \sim 345\,\mathrm{GeV}$, in final states with two charged leptons and multiple jets. [...]
ATLAS-CONF-2025-008.
- 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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