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1.
Search for boosted low-mass resonances decaying into hadrons produced in association with a photon in pp collisions at $\sqrt{s}=$13 TeV with the ATLAS detector / ATLAS Collaboration
Many extensions of the Standard Model, including those with dark matter particles, propose new mediator particles that decay into hadrons. [...]
arXiv:2408.00049 ; CERN-EP-2024-188.
- 2024 - 38.
Fulltext - Previous draft version - Fulltext
2.
Disentangling sources of momentum fluctuations in Xe+Xe and Pb+Pb collisions with the ATLAS detector / ATLAS Collaboration
High-energy nuclear collisions create a quark-gluon plasma, whose initial condition and subsequent expansion vary from event to event, impacting the distribution of the event-wise average transverse momentum ($P([p_{\mathrm{T}}])$). Distinguishing between contributions from fluctuations in the size of the nuclear overlap area (geometrical component) and other sources at fixed size (intrinsic component) presents a challenge. [...]
arXiv:2407.06413; CERN-EP-2024-173.- Geneva : CERN, 2024-12-16 - 23 p. - Published in : Phys. Rev. Lett. 133 (2024) 252301 Fulltext: ANA-HION-2021-20-PAPER - PDF; 2407.06413 - PDF; Publication - PDF; External link: Previous draft version
3.
Sensor response and radiation damage effects for 3D pixels in the ATLAS IBL Detector / ATLAS Collaboration
Pixel sensors in 3D technology equip the outer ends of the staves of the Insertable B Layer (IBL), the innermost layer of the ATLAS Pixel Detector, which was installed before the start of LHC Run 2 in 2015. 3D pixel sensors are expected to exhibit more tolerance to radiation damage and are the technology of choice for the innermost layer in the ATLAS tracker upgrade for the HL-LHC programme. [...]
arXiv:2407.05716; CERN-EP-2024-156.- Geneva : CERN, 2024-10-04 - 42 p. - Published in : JINST 19 (2024) P10008 Fulltext: ANA-PIXE-2023-02-PAPER - PDF; 2407.05716 - PDF; document - PDF; External link: Previous draft version
4.
Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into $b\bar{b}\tau^+\tau^-$ using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
This paper presents a search for exotic decays of the Higgs boson into a pair of new pseudoscalar particles, $H\rightarrow aa$, where one pseudoscalar decays into a $b$-quark pair and the other decays into a $\tau$-lepton pair, in the mass range $12\leq m_{a}\leq 60$ GeV. The analysis uses $pp$ collision data at $\sqrt{s} = 13$ TeV collected with the ATLAS detector at the LHC, corresponding to an integrated luminosity of $140 \mathrm{fb}^{-1}$. [...]
arXiv:2407.01335; CERN-EP-2024-164.- Geneva : CERN, 2024-09-01 - 34 p. - Published in : Phys. Rev. D 110 (2024) 052013 Fulltext: 2407.01335 - PDF; Publication - PDF; External link: Previous draft version
5.
Measurement of differential cross-sections in $ t\overline{t} $ and $ t\overline{t} $+jets production in the lepton+jets final state in pp collisions at $ \sqrt{s} $ = 13 TeV using 140 fb$^{−1}$ of ATLAS data / ATLAS Collaboration
Differential cross-sections for top-quark pair production, inclusively and in association with jets, are measured in $pp$ collisions at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC using an integrated luminosity of 140 fb$^{-1}$. The events are selected with one charged lepton (electron or muon) and at least four jets. [...]
arXiv:2406.19701; CERN-EP-2024-163.- Geneva : CERN, 2024-08-22 - 85 p. - Published in : JHEP 2408 (2024) 182 Fulltext: 2406.19701 - PDF; document - PDF; External link: Previous draft version
6.
A search for $R$-parity violating supersymmetric decays of the top squark to a $b$-jet and a lepton in $\sqrt{s}$ = 13 TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
A search is presented for direct pair production of the stop, the supersymmetric partner of the top quark, in a decay through an $R$-parity violating coupling to a charged lepton and a $b$-quark. The dataset corresponds to an integrated luminosity of 140 fb$^{-1}$ of proton-proton collisions at a center-of-mass energy of $\sqrt{s}$ = 13 TeV collected between 2015 and 2018 by the ATLAS detector at the LHC. [...]
arXiv:2406.18367; CERN-EP-2024-136.- Geneva : CERN, 2024-11-01 - 32 p. - Published in : Phys. Rev. D 110 (2024) 092004 Fulltext: 2406.18367 - PDF; Publication - PDF; External link: Previous draft version
7.
Combination of searches for Higgs boson pair production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
This Letter presents results from a combination of searches for Higgs boson pair production using 126-140 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV recorded with the ATLAS detector. At $95%$ confidence level (CL), the upper limit on the production rate is 2.9 times the Standard Model (SM) prediction, with an expected limit of 2.4 assuming no Higgs boson pair production. [...]
arXiv:2406.09971; CERN-EP-2024-160.- Geneva : CERN, 2024-09-04 - 22 p. - Published in : Phys. Rev. Lett. 133 (2024) 101801 Fulltext: 2406.09971 - PDF; Publication - PDF; External link: Previous draft version
8.
Combination of searches for Higgs boson decays into a photon and a massless dark photon using $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
A combination of searches for Higgs boson decaying into a visible photon and a massless dark photon ($H\to\gamma\gamma_{\text{d}}$) is presented using 139 fb$^{-1}$ of proton-proton collision data at a centre-of-mass energy of $\sqrt{s} = 13$ TeV recorded by the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on the Standard Model Higgs boson decay branching ratio is determined to be $\mathcal{B}(H\to\gamma\gamma_{\text{d}}) < $ 1.3 % (1.5) %. [...]
arXiv:2406.01656; CERN-EP-2024-152.- Geneva : CERN, 2024-08-20 - 35 p. - Published in : JHEP 2408 (2024) 153 Fulltext: 2406.01656 - PDF; document - PDF; ANA-EXOT-2023-01-PAPER - PDF; External link: Previous draft version
9.
Search for new particles in events with a hadronically decaying W or Z boson and large missing transverse momentum at $ \sqrt{s} $ = 13 TeV using the ATLAS detector / ATLAS Collaboration
A search is presented for new particles produced in proton-proton collisions at a centre-of-mass energy of 13 TeV that result in final states comprising a massive vector ($W$ or $Z$) boson that decays hadronically and large missing transverse momentum. The data sample was collected with the ATLAS experiment at the Large Hadron Collider from 2015 to 2018 and corresponds to an integrated luminosity of 140 fb$^{-1}$. [...]
arXiv:2406.01272; CERN-EP-2024-128.- Geneva : CERN, 2024-11-22 - 52 p. - Published in : JHEP 2411 (2024) 126 Fulltext: 2406.01272 - PDF; document - PDF; External link: Previous draft version
10.
Search for a resonance decaying into a scalar particle and a Higgs boson in final states with leptons and two photons in proton-proton collisions at $\sqrt s=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for a hypothetical heavy scalar particle, $X$, decaying into a singlet scalar particle, $S$, and a Standard Model Higgs boson, $H$, using 140 fb$^{-1}$ of proton-proton collision data at the centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the LHC is presented. The explored mass range is $300 \leq m_X \leq 1000$ GeV and $170 \leq m_S \leq 500$ GeV. [...]
arXiv:2405.20926; CERN-EP-2024-147.- Geneva : CERN, 2024-10-11 - 46 p. - Published in : JHEP 2410 (2024) 104 Fulltext: 2405.20926 - PDF; Publication - PDF; document - PDF; External link: Previous draft version

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