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Search for Higgs bosons produced in association with a high-energy photon via vector-boson fusion and decaying to a pair of $b$-quarks in the ATLAS detector / ATLAS Collaboration
A search for Standard Model Higgs bosons produced in association with a high-energy photon and decaying to $b\bar{b}$ is performed using 133 fb$^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collision data collected with the ATLAS detector at the Large Hadron Collider at CERN. [...]
arXiv:2509.14005 ; CERN-EP-2025-110. - 2025 - 40.
Fulltext - Previous draft version - Fulltext

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Evidence for J/$\psi$ suppression in incoherent photonuclear production / Acharya, Shreyasi (INFN, Bari) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
According to quantum chromodynamics, at sufficiently high energy, the structure of hadrons reveals a dynamic equilibrium between gluon splitting and gluon recombination—a phenomenon known as saturation. The process of diffractive photonuclear production of a J/$\psi$ vector meson provides a direct insight into the gluon composition of hadrons. [...]
arXiv:2503.18708; CERN-EP-2025-057.- Geneva : CERN, 2025 - 18 p. Draft (restricted): PDF; Fulltext: PDF;

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Supplemental material: Measurement of isolated prompt photon production in pp and p-Pb collisions at the LHC /ALICE collaboration
This note provides supplementary material for the paper ``Measurement of isolated prompt photon production in pp and p-Pb collisions''. In particular, figures related to the measurement in pp collisions at $\sqrt{s}= 5.02$ TeV are presented, which has been performed using a purity estimation with the template fitting technique. [...]
ALICE-PUBLIC-2025-002.- Geneva : CERN, 2025 - 12. Fulltext: PDF;

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Measurement of isolated prompt photon production in pp and p–Pb collisions at the LHC / Acharya, Shreyasi (INFN, Bari) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
This paper presents the measurement of the isolated prompt photon inclusive production cross section in pp and p-Pb collisions by the ALICE Collaboration at the LHC. The measurement is performed in p-Pb collisions at centre-of-mass energies per nucleon pair of $\sqrt{s_{\text{NN}}}= 5.02$ TeV and $8.16$ TeV, as well as in pp collisions at $\sqrt{s} =5.02$ TeV and $8$ TeV. [...]
arXiv:2502.18054; CERN-EP-2025-024; ALICE-PUBLIC-2025-002.- Geneva : CERN, 2025 - 29 p. Draft (restricted): PDF; Fulltext: PDF;

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Search for hadronic decays of feebly-interacting particles at NA62 / NA62 Collaboration
The NA62 experiment at CERN has the capability to collect data in a beam-dump mode, where 400 GeV protons are dumped on an absorber. In this configuration, New Physics particles, including dark photons, dark scalars, and axion-like particles, may be produced in the absorber and decay in the instrumented volume beginning approximately 80 m downstream of the dump. [...]
arXiv:2502.04241; CERN-EP-2025-012.- Geneva : CERN, 2025-05-25 - 17 p. - Published in : Eur. Phys. J. C 85 (2025) 571 Draft (restricted): PDF; Fulltext: CERN-EP-2025-012 - PDF; 2502.04241 - PDF; document - PDF;

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Direct-photon production in inelastic and high-multiplicity proton-proton collisions at $\sqrt{s} =$ 13 TeV / ALICE Collaboration
In this letter, we present the first measurement of direct photons at the transverse momentum of $ 1 < p_{\rm T} < 6$ GeV/$c$ at midrapidity $|\eta| < 0.8$ in inelastic and high-multiplicity proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV. The fraction of virtual direct photons in the inclusive virtual photon spectrum is obtained from a fit to the dielectron invariant mass spectrum. [...]
arXiv:2411.14366; CERN-EP-2024-295.- Geneva : CERN, 2025-06-11 - 16 p. - Published in : Phys. Lett. B 868 (2025) 139645 Draft (restricted): PDF; Fulltext: 2411.14366 - PDF; 1-s2.0-S037026932500406X-main - PDF;

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Measurement of the inclusive isolated-photon production cross section in pp collisions at $\sqrt{s}$ = 13 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) et al.
The production cross section of inclusive isolated photons has been measured by the ALICE experiment at the CERN LHC in pp collisions at centre-of-momentum energy of $\sqrt{s}=13$ TeV collected during the LHC Run 2 data-taking period. The measurement is performed by combining the measurements of the electromagnetic calorimeter EMCal and the central tracking detectors ITS and TPC, covering a pseudorapidity range of $|\eta^{\gamma}|<0.67$ and a transverse momentum range of $7<p_{\rm T}^{\gamma}<200$ GeV/$c$. [...]
arXiv:2407.01165; CERN-EP-2024-171.- Geneva : CERN, 2025-01-28 - 33 p. - Published in : Eur. Phys. J. C 85 (2025) 98 Draft (restricted): PDF; Fulltext: 2407.01165 - PDF; document - PDF;

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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; External link: Previous draft version

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Recent results from ultra-peripheral lead-lead collisions with ATLAS / Maj, Klaudia (AGH University of Krakow (PL))
Relativistic heavy-ion beams at the LHC are accompanied by a large flux of equivalent photons, leading to multiple photon-induced processes.\ This report presents a series of measurements of such processes performed by the ATLAS Collaboration. [...]
ATL-PHYS-PROC-2024-037. - 2024.
Original Communication (restricted to ATLAS) - Full text

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Measurement of dilepton production from photon fusion processes in Pb+Pb UPC with the ATLAS detector / Grabowska-Bold, Iwona (AGH University of Krakow (PL))
Relativistic heavy-ion beams at the LHC are accompanied by a large flux of equivalent photons, leading to multiple photon-induced processes. [...]
ATL-PHYS-PROC-2024-023. - 2024.
Original Communication (restricted to ATLAS) - Full text

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