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ATLAS Conference Notes

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2025-10-30
17:18
Combination of ATLAS and CMS searches for Higgs boson pair production at $\sqrt{s} = 13$ TeV
This note presents a combination of searches for Higgs boson pair (HH) production performed by the ATLAS and CMS Collaborations using proton-proton collision data sets recorded at $\sqrt{s} = 13\,\text{TeV}$ at the LHC Run 2, corresponding to integrated luminosities ranging between 126 and 140$\,\text{fb}^{-1}$. [...]
ATLAS-CONF-2025-012. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-10-08
17:12
Measurement of differential $t$-channel single top (anti)quark production cross-sections at 13 TeV with the ATLAS detector
The production of single top quarks and top antiquarks via the $t$-channel exchange of a virtual $W$ boson is measured in proton--proton collisions at a centre-of-mass energy of 13 TeV at the Large Hadron Collider. [...]
ATLAS-CONF-2025-011. - 2025 - 43.
Original Communication (restricted to ATLAS) - Full text

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2025-09-08
10:23
Measurement of dijet transverse momentum balance in O+O and $pp$ collisions at 5.36 TeV with the ATLAS detector
In July 2025, the LHC delivered oxygen-oxygen (O+O) collisions at 5.36 TeV, and the ATLAS experiment collected 8 nb$^{-1}$ of data. [...]
ATLAS-CONF-2025-010. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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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

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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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2025-07-07
16:18
Search for the Higgs boson decay to a $Z$ boson and a photon in $pp$ collisions at $\sqrt{s} = 13$ TeV and $13.6$ TeV with the ATLAS detector
A search for the Higgs boson decay to a $Z$ boson and a photon in the $\ell\ell\gamma$ ($\ell = e, \mu$) final state is performed using $pp$ collisions recorded with the ATLAS detector at $\sqrt{s}=13.6$ TeV during 2022--2024, corresponding to an integrated luminosity of 165 fb$^{-1}$. [...]
ATLAS-CONF-2025-007. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-07-07
16:16
Combined measurements of Higgs boson production and decay at $\sqrt{s} =$ 13 TeV using up to 140 fb$^{-1}$ of data collected by the ATLAS Experiment
This note presents combined measurements of Higgs boson production and decay using up to 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the LHC at $\sqrt{s} = 13$ TeV. [...]
ATLAS-CONF-2025-006. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-05-12
20:45
Study of Higgs boson pair production in the $HH \rightarrow bb \gamma\gamma$ final state with 308 fb$^{-1}$ of data collected at $\sqrt{s} = 13$ TeV and 13.6 TeV by the ATLAS experiment
A search for Higgs boson pair production in the $b \overline{b} \gamma \gamma$ final state is performed. [...]
ATLAS-CONF-2025-005. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-04-08
20:57
Differential measurements of $\gamma\gamma\to\tau\tau$ using $\sqrt{s_{_\text{NN}}} = 5.02$ TeV Pb+Pb collisions with the ATLAS detector
This study presents differential fiducial cross-section measurements of photon-induced $\tau$-lepton pair production. [...]
ATLAS-CONF-2025-004. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-04-07
21:11
Measurement of coherent exclusive $J/\psi\to\mu^+\mu^-$ production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{\textrm{NN}}}=5.36$ TeV with the ATLAS detector
This note presents a measurement of coherent exclusive $J/\psi\to\mu^+\mu^-$ production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{\textrm{NN}}}=5.36$ TeV. [...]
ATLAS-CONF-2025-003. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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