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Neutron stars as photon double-lenses: Constraining resonant conversion into ALPs
/ Bondarenko, Kyrylo (IFPU, Trieste ; SISSA, Trieste ; INFN, Trieste) ; Boyarsky, Alexey (Leiden U.) ; Pradler, Josef (Vienna, OAW ; Vienna U. ; CERN) ; Sokolenko, Anastasia (Fermilab ; Chicago U., KICP)
Axion-photon conversion is a prime mechanism to detect axion-like particles that share a coupling to the photon. We point out that in the vicinity of neutron stars with strong magnetic fields, magnetars, the effective photon mass receives comparable but opposite contributions from free electrons and the radiation field. [...]
arXiv:2203.08663; UWThPh 2023-22; FERMILAB-PUB-22-170-V.-
2023-10-11 - 7 p.
- Published in : Phys. Lett. B 846 (2023) 138238
Fulltext: 2203.08663 - PDF; FERMILAB-PUB-22-170-V - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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2.
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Post-LS3 Experimental Options in ECN3
/ Ahdida, Claudia (CERN) ; Arduini, Gianluigi (CERN) ; Balazs, Kincso (CERN) ; Bartosik, Hannes (CERN) ; Bernhard, Johannes (CERN) ; Boyarsky, Alexey (Leiden University (NL)) ; Brod, Joachim (University of Cincinnati) ; Brugger, Markus (CERN) ; Calviani, Marco (CERN) ; Ceccucci, Augusto (CERN) et al.
The Experimental Cavern North 3 (ECN3) is an underground experimental cavern on the CERN Prévessin site. ECN3 currently hosts the NA62 experiment, with a physics programme devoted to rare kaon decays and searches of hidden particles approved until Long Shutdown 3 (LS3). [...]
CERN-PBC-REPORT-2023-003.-
Geneva : CERN, 2023 - 80.
Fulltext: PDF;
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3.
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Towards the optimal beam dump experiment to search for feebly interacting particles
/ Bondarenko, Kyrylo (SISSA, Trieste ; IFPU, Trieste ; INFN, Trieste) ; Boyarsky, Alexey (Leiden U.) ; Jacobsson, Richard (CERN) ; Mikulenko, Oleksii (Leiden U.) ; Ovchynnikov, Maksym (KIT, Karlsruhe, IAP ; Leiden U.)
Future searches for new physics beyond the Standard Model are without doubt in need of a diverse approach and experiments with complementary sensitivities to different types of classes of models. One of the directions that should be explored is feebly interacting particles (FIPs) with masses below the electroweak scale. [...]
arXiv:2304.02511.-
2023-12-13 - 16 p.
- Published in : Eur. Phys. J. C 83 (2023) 1126
Fulltext: 2304.02511 - PDF; document - PDF;
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4.
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Searches for new physics at SND@LHC
/ Boyarsky, Alexey (Cosine, Leiden) ; Mikulenko, Oleksii (Cosine, Leiden ; Taras Shevchenko U.) ; Ovchynnikov, Maksym (Cosine, Leiden) ; Shchutska, Lesya (EPFL, Lausanne, FSL)
SND@LHC is an approved experiment equipped to detect scattering of neutrinos produced in the far-forward direction at the LHC, and aimed to measure their properties. In addition, the detector has a potential to search for new feebly interacting particles (FIPs) that may be produced in proton-proton collisions. [...]
arXiv:2104.09688.-
2022-03-01 - 30 p.
- Published in : JHEP 2203 (2022) 006
Fulltext: document - PDF; 2104.09688 - PDF;
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5.
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The Present and Future Status of Heavy Neutral Leptons
/ Abdullahi, Asli M. (Fermilab ; Durham U., IPPP) ; Alzas, Pablo Barham (CERN ; Madrid, CIEMAT) ; Batell, Brian (Pittsburgh U.) ; Beacham, James (Ohio State U.) ; Boyarsky, Alexey (Leiden U.) ; Carbajal, Saneli (Lima, Pont. U. Catolica) ; Chatterjee, Animesh (Pittsburgh U.) ; Crespo-Anadon, Jose I. (Madrid, CIEMAT) ; Deppisch, Frank F. (University Coll. London) ; De Roeck, Albert (CERN) et al.
The existence of non-zero neutrino masses points to the likely existence of multiple SM neutral fermions. When such states are heavy enough that they cannot be produced in oscillations, they are referred to as Heavy Neutral Leptons (HNLs). [...]
arXiv:2203.08039; FERMILAB-CONF-22-184-T-V.-
2023-01-20 - 100 p.
- Published in : 10.1088/1361-6471/ac98f9
Fulltext: jt - PDF; 2203.08039 - PDF; Fulltext from Publisher: PDF; External links: Fermilab Library Server; eConf
In : 2021 Snowmass Summer Study, Seattle, WA, United States, 11 - 20 July 2021
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6.
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The Forward Physics Facility at the High-Luminosity LHC
/ Feng, Jonathan L. (UC, Irvine) ; Kling, Felix (DESY) ; Reno, Mary Hall (Iowa U.) ; Rojo, Juan (NIKHEF, Amsterdam ; Vrije U., Amsterdam) ; Soldin, Dennis (Delaware U.) ; Anchordoqui, Luis A. (Lehman Coll.) ; Boyd, Jamie (CERN) ; Ismail, Ahmed (Oklahoma State U.) ; Harland-Lang, Lucian (Oxford U. ; Oxford U., Theor. Phys.) ; Kelly, Kevin J. (CERN) et al.
High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along the beam collision axis, outside of the acceptance of existing LHC experiments. The proposed Forward Physics Facility (FPF), to be located several hundred meters from the ATLAS interaction point and shielded by concrete and rock, will host a suite of experiments to probe Standard Model (SM) processes and search for physics beyond the Standard Model (BSM) [...]
arXiv:2203.05090; UCI-TR-2022-01; CERN-PBC-Notes-2022-001; INT-PUB-22-006; BONN-TH-2022-04; FERMILAB-PUB-22-094-ND-SCD-T.-
Geneva : CERN, 2023-01-20 - 413 p.
- Published in : J. Phys. G 50 (2023) 030501
Fulltext: FERMILAB-PUB-22-094-ND-SCD-T - PDF; 2203.05090 - PDF; blank - PDF; Fulltext from Publisher: PDF; External links: Fermilab Library Server; eConf
In : 2021 Snowmass Summer Study, Seattle, WA, United States, 11 - 20 July 2021, pp.030501
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7.
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8.
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Feebly-interacting particles: FIPs 2020 workshop report
/ Agrawal, Prateek (Oxford U., Theor. Phys.) ; Bauer, Martin (Durham U., IPPP) ; Beacham, James (Duke U.) ; Berlin, Asher (New York U., CCPP ; New York U.) ; Boyarsky, Alexey (Leiden U.) ; Cebrian, Susana (Zaragoza U.) ; Cid-Vidal, Xabier (Santiago de Compostela U.) ; d'Enterria, David (CERN) ; De Roeck, Albert (CERN) ; Drewes, Marco (Louvain U., CP3) et al.
With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs 2020 has been the first workshop fully dedicated to the physics of feebly-interacting particles and was held virtually from 31 August to 4 September 2020. [...]
arXiv:2102.12143.-
2021-11-19 - 246 p.
- Published in : Eur. Phys. J. C 81 (2021) 1015
Fulltext: 2102.12143 - PDF; document - PDF;
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9.
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Account of the baryonic feedback effect in γ-ray measurements of intergalactic magnetic fields
/ Bondarenko, Kyrylo (CERN ; Ecole Polytechnique, Lausanne) ; Boyarsky, Alexey (Leiden U.) ; Korochkin, Alexander (APC, Paris ; Moscow, INR ; Novosibirsk State U.) ; Neronov, Andrii (APC, Paris ; U. Geneva (main)) ; Semikoz, Dmitri (APC, Paris ; Moscow, INR ; Moscow Phys. Eng. Inst.) ; Sokolenko, Anastasia (OAW, Vienna)
Intergalactic magnetic fields in the voids of the large-scale structure can be probed via measurements of secondary gamma-ray emission from gamma-ray interactions with extragalactic background light. Lower bounds on the magnetic field in the voids were derived from the non-detection of this emission. [...]
arXiv:2106.02690.-
2022-04-01 - 8 p.
- Published in : Astron. Astrophys. 660 (2022) A80
Fulltext: PDF;
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10.
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Ultrahigh energy cosmic ray deflection by the intergalactic magnetic field
/ Garcia, Andres Aramburo (Leiden U.) ; Bondarenko, Kyrylo (CERN ; Ecole Polytechnique, Lausanne) ; Boyarsky, Alexey (Leiden U.) ; Nelson, Dylan (U. Heidelberg, ITP) ; Pillepich, Annalisa (Heidelberg, Max Planck Inst. Astron.) ; Sokolenko, Anastasia (Vienna, OAW)
The origin and composition of ultra-high energy cosmic rays (UHECRs) remain a mystery. The common lore is that UHECRs are deflected from their primary directions by the Galactic and extragalactic magnetic fields. [...]
arXiv:2101.07207.-
2021-10-11 - 6 p.
- Published in : Phys. Rev. D 104 (2021) 083017
Fulltext: PDF; Fulltext from publisher: PDF;
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