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New Physics at 1 TeV?
JETP Letters. 2016. Vol. 103. No. 9. P. 557–562.
Godunov S. I., Rozanov A. N., M.I.Vysotsky, Zhemchugov E. V.
If decays of a heavy particle S are responsible for the diphoton excess with invariant mass 750 GeV observed
at the 13 TeV LHC run, it can be easily accommodated in the Standard Model. Two scenarios are considered:
production in gluon fusion through a loop of heavy isosinglet quark(s) and production in photon fusion
through a loop of heavy isosinglet leptons. In the second case, many heavy leptons are needed or/and they
should have large electric charges in order to reproduce experimental data on σpp → SX · Br(S → γγ).
Dmitriev A., Kornilov V., Batienkov R., Lecture Notes in Civil Engineering 2026 Vol. 886 P. 249–255
Numerous studies have provided compelling evidence that the probability distribution of avalanche sizes follows a power law, and that 1/f noise is present in the stochastic dynamics of landslides. We present a theoretical explanation of these phenomena within the framework of self-organized criticality theory, proposing a discrete-time model in the form of a sandpile cellular ...
Added: October 13, 2026
Dmitriev A., Shulman I., Lebedev A., Studies in Computational Intelligence 2026 Vol. 1265 P. 266–273
A discrete-time model is presented for the self-organization of the X/Twitter social network to the edge of a phase transition, characterized by avalanche-like propagation of information in the network. The model is based on the analogy between the critical dynamics of the X social network and sandpile cellular automata with Manna rule on the Chung-Lu ...
Added: October 13, 2026
Arutyunov K., Kharitonov I. A., Petrosyants K. O., JETP Letters 2026 Vol. 124 No. 6 P. 1–16
Superconducting properties of metallic micro- and nanowires can be entirely different from those of bulk superconductors. Of particular interest is the nonequilibrium current-induced state of a quasi-one-dimensional superconducting channel. The most interesting phenomenon here is the stepped I–V characteristic, explained by a process known as phase slip center activation. If the origin of such step-like ...
Added: October 13, 2026
Makarov D. M., Kalikin N., Fashchevsky K. A. et al., Electrochimica Acta 2026 Vol. 579 Article 150159
Machine learning (ML) has become a powerful tool for accelerating the development of carbon-based supercapacitors;
however, most published models assume that a single predictive framework can describe both conventional
porous carbons and hybrid carbon electrodes. Here, we test this assumption using a comprehensive
benchmark dataset and an extended literature-curated dataset enriched with synthesis- and electrolyte-related
descriptors. Three ML algorithms ...
Added: October 13, 2026
Махлуф М., Ozhegov R., Elezov M. et al., Фотоника 2026 Vol. 20 No. 6 P. 414–423
This paper compares the ranging precision of direct time-of-flight (dToF) and non-line-of-sight (NLOS) LiDAR architectures, both using a superconducting nanowire single-photon detector (SNSPD). Both systems operate at 1550 nm with a 50 ps pulsed laser and time-correlated single-photon counting (TCSPC). The dToF configuration achieved approximately 100 µm precision at 10 m, while the NLOS configuration achieved 500 µm precision for ...
Added: October 12, 2026
Singapore: Springer, 2026.
This volume presents the Proceedings of the 34th IUPAP Conference on Computational Physics (CCP2023), held in Kobe, Japan on August 4–8, 2023. It offers a collection of peer-reviewed articles that highlight recent developments in computational and simulation research across various areas of physics. Key topics include the use of data science, quantum computing, and machine ...
Added: October 12, 2026
Goncharov A., Chibisov A., Advanced Theory and Simulations 2023 Vol. 12 No. 13 Article 2200816
Designing stable quantum computers with the ability to correct errors responsibly requires a detailed understanding of the physical processes that underlie these devices. In this study, detailed quantum mechanical simulations of the atomic structure, charge distribution of electron density, and distribution and orientation of magnetic and quantum states as a function of applied external pressure ...
Added: October 11, 2026
Chibisov A., Gnidenko A., Chibisova M. et al., FlatChem 2023 Vol. 41 Article 100533
Manufacturing precise quantum computers with small errors in quantum operations, long coherence times, and low power consumption is the most important challenge in modern nanoelectronics. To understand the operating modes of such calculators in detail, both the optimal arrangement of the qubit system within the structure and changes in its magnetic properties must be comprehensively ...
Added: October 11, 2026
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Journal of High Energy Physics 2024 Vol. 6 Article 132
We report on a measurement of the Λc+ to D0 production ratio in peripheral PbPb collisions at sNN = 5.02 TeV with the LHCb detector in the forward rapidity region 2 < y < 4.5. The Λc+ (D0) hadrons are reconstructed via the decay channel Λc+ → pK−π+ (D0 → K−π+) for 2 < pT < 8 GeV/c and in the centrality range of about 65–90%. The results show no significant dependence on pT, y or ...
Added: December 6, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Physical Review D - Particles, Fields, Gravitation and Cosmology 2024 Vol. 108 No. 1 Article 012018
The branching fraction ℬ(𝐵0→𝐷*−𝜏+𝜈𝜏) is measured relative to that of the normalization mode 𝐵0 →𝐷*−𝜋+𝜋−𝜋+ using hadronic 𝜏+ →𝜋+𝜋−𝜋+(𝜋0)¯𝜈𝜏 decays in proton-proton collision data at a center-of-mass energy of 13 TeV collected by the LHCb experiment, corresponding to an integrated luminosity of 2 fb−1. The measured ratio is ℬ(𝐵0→𝐷*−𝜏+𝜈𝜏)/ℬ(𝐵0→𝐷*−𝜋+𝜋−𝜋+) =1.70 ±0.10+0.11−0.10, where the first uncertainty is statistical and the second is related to systematic effects. Using established branching fractions ...
Added: December 6, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Journal of High Energy Physics 2023 Vol. 2023 Article 129
A search for CP violation in D0 → π−π+π0 decays is reported, using pp collision data collected by the LHCb experiment from 2015 to 2018 corresponding to an integrated luminosity of 6 fb−1. An unbinned model-independent approach provides sensitivity to local CP violation within the two-dimensional phase space of the decay. The method is validated using the Cabibbo-favoured channel D0 → K−π+π0 and background regions of ...
Added: December 6, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Physical Review D - Particles, Fields, Gravitation and Cosmology 2024 Vol. 110 No. 9 Article 092007
The longitudinal polarization fraction of the meson is measured in decays, where the lepton decays to three charged pions and a neutrino, using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV and corresponding to an integrated luminosity of . The polarization fraction is measured in two regions, below and above , where is defined as the ...
Added: December 6, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Journal of High Energy Physics 2024 Vol. 2024 No. 9 Article 82
A measurement of the transverse polarization of the Λ and Λ¯ hyperons in pNe fixed-target collisions at sNN = 68.4 GeV is presented using data collected by the LHCb detector. The polarization is studied using the decay Λ → pπ− together with its charge conjugated process, the integrated values measured are
PΛ=0.029±0.019(stat)±0.012(syst),PΛ¯=0.003±0.023(stat)±0.014(syst).
Furthermore, the results are shown as a function of the Feynman x variable, transverse momentum, pseudorapidity and rapidity ...
Added: December 6, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Journal of High Energy Physics 2024 Vol. 2024 No. 8 Article 93
A search for radiative decay of Bs0 mesons to orbitally excited K+K− states is performed using proton proton collisions recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. The dikaon spectrum in the mass range mKK < 2400 MeV/c2 is dominated by the ϕ(1020) resonance that accounts for almost 70% of the decay rate. Considering the possible contributions of f2(1270), f2′(1525) ...
Added: December 6, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Physical Review Letters 2024 Vol. 133 No. 13 Article 131902
A study of resonant structures in and 𝐵+→𝐷*−𝐷+𝐾+ decays is performed, using proton-proton collision data at center-of-mass energies of √𝑠 =7, 8, and 13 TeV recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. A simultaneous amplitude fit is performed to the two channels with contributions from resonances decaying to 𝐷*−𝐷+ and 𝐷*+𝐷− states linked by 𝐶 parity. This procedure allows the 𝐶 parities of resonances in ...
Added: December 6, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Physical Review D - Particles, Fields, Gravitation and Cosmology 2024 Vol. 110 No. 7 Article 072002
A sample of 𝑝𝑝 collision data, corresponding to an integrated luminosity of 5.5 fb−1 and collected by the LHCb experiment during LHC Run 2, is used to measure the ratio of the lifetime of the Ξ−𝑏 baryon to that of the Λ0𝑏 baryon, 𝑟𝜏 ≡𝜏Ξ−𝑏/𝜏Λ0𝑏. The value 𝑟𝜏 =1.076 ±0.013 ±0.006 is obtained, where the first uncertainty is statistical and the second systematic. This value is averaged with the corresponding value ...
Added: December 6, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Physical Review D - Particles, Fields, Gravitation and Cosmology 2024 Vol. 110 No. 5 Article 052007
A search for the nonresonant Λc+→pμ+μ- decay is performed using proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the LHCb experiment, corresponding to an integrated luminosity of 5.4 fb-1. No evidence for the decay is found in the dimuon invariant-mass regions where the expected contributions of resonances is subdominant. The upper limit on the branching fraction ...
Added: December 6, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Journal of High Energy Physics 2024 Vol. 2024 Article 122
The decays of the χb1(1P), χb2(1P), χb1(2P) and χb2(2P) mesons into the Υ(1S)μ+μ− final state are observed with a high significance using proton-proton collision data collected with the LHCb detector and corresponding to an integrated luminosity of 9 fb−1. The newly observed decays together with the Υ(2S) → Υ(1S)π+π− and Υ(3S) → Υ(2S)π+π− decay modes are used for ...
Added: December 6, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Journal of Instrumentation 2024 Vol. 19 No. 05 Article P05065
The LHCb upgrade represents a major change of the experiment. The detectors have been almost completely renewed to allow running at an instantaneous luminosity five times larger than that of the previous running periods. Readout of all detectors into an all-software trigger is central to the new design, facilitating the reconstruction of events at the ...
Added: September 18, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Physical Review Letters 2024 Vol. 132 No. 5 Article 051802
The decay-time-dependent 𝐶𝑃 asymmetry in 𝐵0𝑠→𝐽/𝜓(→𝜇+𝜇−)𝐾+𝐾− decays is measured using proton-proton collision data, corresponding to an integrated luminosity of 6 fb−1, collected with the LHCb detector at a center-of-mass energy of 13 TeV. Using a sample of approximately 349 000 𝐵0𝑠 signal decays with an invariant 𝐾+𝐾− mass in the vicinity of the 𝜙(1020) resonance, the 𝐶𝑃-violating phase 𝜙𝑠 is measured, along with the difference in decay widths of the light and ...
Added: September 18, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Journal of High Energy Physics 2024 Vol. 2024 No. 2 Article 32
A search for rare B → Dμ+μ− decays is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. No significant signals are observed in the non-resonant μ+μ− modes, and upper limits of B(B0→D¯0μ+μ−)<5.1×10−8, B(B+→Ds+μ+μ−)<3.2×10−8, B(Bs0→D¯0μ+μ−)<1.6×10−7 and fc/fu⋅B(Bc+→Ds+μ+μ−)<9.6×10−8 are set at the 95 % confidence level, where fc and fu are the fragmentation fractions of a B meson with a c and u quark respectively in proton-proton ...
Added: September 18, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Physical Review Letters 2024 Vol. 132 No. 8 Article 081802
The first observation of the singly Cabibbo-suppressed Ω0𝑐→Ω−𝐾+ and Ω0𝑐→Ξ−𝜋+ decays is reported, using proton-proton collision data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb−1, collected with the LHCb detector between 2016 and 2018. The branching fraction ratios are measured to be ℬ(Ω0𝑐→Ω−𝐾+)ℬ(Ω0𝑐→Ω−𝜋+)=[6.08±0.51(stat)±0.40(syst)]%,ℬ(Ω0𝑐→Ξ−𝜋+)ℬ(Ω0𝑐→Ω−𝜋+)=[15.81±0.87(stat)±0.44(syst)±0.16(ext)]%. In addition, using the Ω0𝑐→Ω−𝜋+ decay channel, the Ω0𝑐 baryon mass is measured to be 𝑀(Ω0𝑐)=2695.28±0.07(stat)±0.27(syst)±0.30(ext) MeV, improving the precision of ...
Added: September 18, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., Journal of High Energy Physics 2024 Vol. 2024 No. 2 Article 70
The first measurement of the Z boson production cross-section at centre-of-mass energy s = 5.02 TeV in the forward region is reported, using pp collision data collected by the LHCb experiment in year 2017, corresponding to an integrated luminosity of 100 ± 2 pb−1. The production cross-section is measured for final-state muons in the pseudorapidity range 2.0 < η < 4.5 with transverse ...
Added: September 18, 2024
Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., The European Physical Journal C - Particles and Fields 2024 Vol. 84 Article 206
A model-independent study of CP violation in B0→DK∗0 decays is presented using data corresponding to an integrated luminosity of 9fb−1 collected by the LHCb experiment at centre-of-mass energies of s=7,8 and 13TeV. The CKM angle γ is determined by examining the distributions of signal decays in phase-space bins of the self-conjugate D→KS0h+h− decays, where h=π,K. Observables related to CP violation are measured and the angle γ is determined to be γ=(49−19+22)∘. Measurements ...
Added: September 18, 2024