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658 results on '"Khokhlov, A"'

1. Metrology of the XXI century. Radio engineering quantities and standards in the SI system of units

Author

Khokhlov, Arthur V.

Subjects
metrology, measurement, units of measurement, physical quantity, fundamental physical constants, si system of units, standards, Physics, QC1-999
Abstract

Background and Objectives: The article discusses the methodological recommendations for teachers and experimental researchers on metrological support of measurements and the correct use of units of physical quantities when reading courses in the theory of communication and radio measurements and conducting practical classes. The method of calculating new standards of radio engineering units of measurements based on modern scientific and technical achievements and fundamental physical constants is discussed. Materials and Methods: Modern measurements of physical quantities use two main international systems of units – Metric and SI, historically related to each other. The task of forming a holistic idea of the origin of the main physical units of measurement is posed. This material is rarely discussed in the literature. Results: It has been shown how the transition from physical quantities to the apparatus of fundamental physical constants reflects the transition from classical physics to modern general theoretical concepts and enables one to create a simpler and at the same time the most fundamental definition of the entire system of SI units to introduce formulas for the exact calculation of radio engineering units, including magnetic quantities. Conclusion: The SI system of units is devoid of the division of units of measurement into basic and derived ones, and provides the utmost accuracy of measuring standards for communication systems.

Published
2022
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2. Double pulse all-optical coherent control of ultrafast spin-reorientation in an antiferromagnetic rare-earth orthoferrite

Author

N. E. Khokhlov, A. E. Dolgikh, B. A. Ivanov, and A. V. Kimel

Subjects
Biotechnology, TP248.13-248.65, Physics, QC1-999
Abstract

A pair of circularly polarized laser pulses of opposite helicities are shown to control the route of spin reorientation phase transition in the rare-earth antiferromagnetic orthoferrite (Sm0.55Tb0.45)FeO3. The route can be efficiently controlled by the delay between the pulses and the sample temperature. Simulations employing previously published models of laser-induced spin dynamics in orthoferrites failed to reproduce the experimental results. We suggest that the failure is due to neglected temperature dependence of the antiferromagnetic resonance damping in the material. Taking into account the experimentally deduced temperature dependence of the damping, we obtained good agreement between the simulations and the experiment.

Published
2024
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3. Spatially selective excitation of spin dynamics in magneto-photonic crystals by spectrally tunable ultrashort laser pulses

Author

Sylgacheva Daria A., Khokhlov Nikolai E., Gerevenkov Petr I., Filatov Iaroslav A., Kozhaev Mikhail A., Savochkin Igor V., Kalish Andrey N., Kalashnikova Alexandra M., and Belotelov Vladimir I.

Subjects
magneto-optics, magneto-photonic crystals (mpc), nanophotonics, spin dynamics, ultrafast magnetization, Physics, QC1-999
Abstract

In this work, we tackle the problem of the spatially selective optical excitation of spin dynamics in structures with multiple magnetic layers. The 120 fs circularly polarized laser pulses were used to launch magnetization precession in an all-dielectric magneto-photonic crystals (MPC) formed by magnetic layers sandwiched between and inside two magnetic Bragg mirrors. Optical pump-probe experiments reveal magnetization precession triggered via ultrafast inverse Faraday effect with an amplitude strongly dependent on the pump central wavelength: maxima of the amplitude are achieved for the wavelength tuned at the cavity resonance and at the edge of the photonic bandgap. The optical impact on the spins caused by the inverse Faraday effect and spectrum of this effect are found to correlate mostly to the direct Faraday effect. We show that even though the pump laser pulses propagate along the whole structure tuning their wavelength allows localization of a larger spin precession either in the cavity layer or in the Bragg mirror layers selectively. The results pave the way to the ultrafast optical control of magnetization dynamics at a sub-wavelength scale that is vital for modern magneto-photonics and magnonics.

Published
2022
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4. Double J/ψ production in pion-nucleon scattering at COMPASS

Author

G.D. Alexeev, M.G. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, K. Augsten, W. Augustyniak, C.D.R. Azevedo, B. Badełek, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, M. Bodlak, F. Bradamante, A. Bressan, V.E. Burtsev, W.-C. Chang, C. Chatterjee, M. Chiosso, A.G. Chumakov, S.-U. Chung, A. Cicuttin, P.M.M. Correia, M.L. Crespo, D. D'Ago, S. Dalla Torre, S.S. Dasgupta, S. Dasgupta, I. Denisenko, O.Yu. Denisov, S.V. Donskov, N. Doshita, Ch. Dreisbach, W. Dünnweber, R.R. Dusaev, D. Ecker, A. Efremov, D. Eremeev, P.D. Eversheim, P. Faccioli, M. Faessler, M. Finger, M. Finger, jr., H. Fischer, K.J. Flöthner, W. Florian, C. Franco, J.M. Friedrich, V. Frolov, L.G. Garcia Ordòñez, F. Gautheron, O.P. Gavrichtchouk, S. Gerassimov, J. Giarra, D. Giordano, M. Gorzellik, A. Grasso, A. Gridin, S. Groote, M. Grosse Perdekamp, B. Grube, M. Grüner, A. Guskov, D. von Harrach, M. Hoffmann, N. Horikawa, N. d'Hose, C.-Y. Hsieh, S. Huber, S. Ishimoto, A. Ivanov, T. Iwata, M. Jandek, V. Jary, R. Joosten, E. Kabuß, F. Kaspar, A. Kerbizi, B. Ketzer, A. Khatun, G.V. Khaustov, Yu.A. Khokhlov, F. Klein, J.H. Koivuniemi, V.N. Kolosov, K. Kondo Horikawa, I. Konorov, V.F. Konstantinov, A.M. Korzenev, S. Koshkarev, A.M. Kotzinian, O.M. Kouznetsov, A. Koval, Z. Kral, F. Krinner, F. Kunne, K. Kurek, R.P. Kurjata, A. Kveton, K. Lavickova, S. Levorato, Y.-S. Lian, J. Lichtenstadt, P.-J. Lin, R. Longo, V.E. Lyubovitskij, A. Maggiora, A. Magnon, N. Makins, N. Makke, G.K. Mallot, A. Maltsev, S.A. Mamon, A. Martin, J. Marzec, J. Matoušek, T. Matsuda, G. Mattson, C. Menezes Pires, F. Metzger, M. Meyer, W. Meyer, Yu.V. Mikhailov, M. Mikhasenko, E. Mitrofanov, Y. Miyachi, R. Molina, A. Moretti, A. Nagaytsev, C. Naim, D. Neyret, J. Nový, W.-D. Nowak, G. Nukazuka, A.G. Olshevsky, M. Ostrick, D. Panzieri, B. Parsamyan, S. Paul, H. Pekeler, J.-C. Peng, M. Pešek, D.V. Peshekhonov, M. Pešková, S. Platchkov, J. Pochodzalla, V.A. Polyakov, J. Pretz, M. Quaresma, C. Quintans, G. Reicherz, C. Riedl, T. Rudnicki, D.I. Ryabchikov, A. Rychter, A. Rymbekova, V.D. Samoylenko, A. Sandacz, S. Sarkar, I.A. Savin, G. Sbrizzai, H. Schmieden, A. Selyunin, K. Sharko, L. Sinha, M. Slunecka, D. Spülbeck, A. Srnka, M. Stolarski, O. Subrt, M. Sulc, H. Suzuki, S. Tessaro, F. Tessarotto, A. Thiel, J. Tomsa, F. Tosello, A. Townsend, T. Triloki, V. Tskhay, B. Valinoti, B.M. Veit, J.F.C.A. Veloso, B. Ventura, M. Virius, M. Wagner, S. Wallner, K. Zaremba, M. Zavertyaev, M. Zemko, E. Zemlyanichkina, and M. Ziembicki

Subjects
COMPASS, Charmonia production, Double J/ψ, Single parton scattering, Intrinsic charm, Physics, QC1-999
Abstract

We present the study of the production of double J/ψ mesons using COMPASS data collected with a 190 GeV/c π− beam scattering off NH3, Al and W targets. Kinematic distributions of the collected double J/ψ events are analysed, and the double J/ψ production cross section is estimated for each of the COMPASS targets. The NH3 results are compared to predictions from single- and double-parton scattering models as well as the pion intrinsic charm and the tetraquark exotic resonance hypotheses. It is demonstrated that the single parton scattering production mechanism gives the dominant contribution that is sufficient to describe the data. An upper limit on the double intrinsic charm content of the pion is evaluated. No significant signatures that could be associated with exotic tetraquarks are found in the double J/ψ mass spectrum.

Published
2023
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5. Muon puzzle in inclined muon bundles detected by NEVOD-DECOR

Author

A. G. Bogdanov, N. S. Barbashina, S. S. Khokhlov, V. V. Kindin, R. P. Kokoulin, K. G. Kompaniets, A. Y. Konovalova, G. Mannocchi, A. A. Petrukhin, V. V. Shutenko, G. Trinchero, V. S. Vorobev, I. I. Yashin, E. A. Yurina, E. A. Zadeba

Subjects
Physics, QC1-999
Abstract

The data of cosmic ray NEVOD-DECOR experiment on the investigation of inclined muon bundles for a long time period (May 2012 - March 2021) are presented. The analysis showed that the observed intensity of muon bundles at primary cosmic ray energies of about 1 EeV and higher can be compatible with the expectation in frame of widely used hadron interaction models only under the assumption of an extremely heavy mass composition. This conclusion is consistent with data of several experiments on investigations of muon content in air showers, but contradicts the available fluorescence data on $X_{\text{max}}$ which favor a light mass composition at these energies. In order to clarify the nature of the "muon puzzle", investigations of the muon bundle energy deposit in the detector material were carried out. For the first time, experimental estimates of the average energy of muons in the bundles of inclined air showers initiated by primary particles with energies from 10 to 1000 PeV have been obtained.

Published
2023
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6. The Process of Reconstructing the Ancient Magnetic Field Direction: A New Approach to Paleomagnetic Data for a Better Estimate of Accuracy

Author

Andrey Khokhlov and Georgy Gvozdik

Subjects
probability distributions, statistical modeling, paleomagnetic data, Zijderveld diagrams, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999
Abstract

Traditionally, the accuracy of paleomagnetic data obtained from samples of igneous rocks relies on the widely known method a95. We propose here a novel statistical method to estimate the ancient field direction using information from Zijderveld diagrams. We show a way to detect outliers in a sample of directions by constructing a confidence domain (convex, but complex in shape) on the direction sphere. Such a region statistically localizes the common direction of the ancient field over a given set of specimens from the lava flow. Often, even for a small sample, this confidence domain is much smaller than the confidence domain that the a95 method gives for the average direction over the sample. Improving the accuracy is obviously important for describing the evolution of the magnetic field.

Published
2023
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7. Six-Core GeO2-Doped Silica Microstructured Optical Fiber with Induced Chirality

Author

Anton V. Bourdine, Vladimir V. Demidov, Konstantin V. Dukelskii, Alexander V. Khokhlov, Egishe V. Ter-Nersesyants, Sergei V. Bureev, Alexandra S. Matrosova, Grigori A. Pchelkin, Artem A. Kuznetsov, Oleg G. Morozov, Ilnur I. Nureev, Airat Zh. Sakhabutdinov, Timur A. Agliullin, Michael V. Dashkov, Alexander S. Evtushenko, Elena S. Zaitseva, Alexander A. Vasilets, Azat R. Gizatulin, Ivan K. Meshkov, Yaseera Ismail, Francesco Petruccione, Ghanshyam Singh, Manish Tiwari, and Juan Yin

Subjects
silica microstructured optical fiber, multi-core microstructured optical fiber, twisted microstructured optical fiber, germanium dioxide, chirality, laser beam profile, Chemicals: Manufacture, use, etc., TP200-248, Textile bleaching, dyeing, printing, etc., TP890-933, Biology (General), QH301-705.5, Physics, QC1-999
Abstract

This work presents a fabricated silica few-mode microstructured optical fiber (MOF) with a special six GeO2-doped core geometry, an outer diameter of 125 µm (that corresponds to conventional commercially available telecommunication optical fibers), and improved induced twisting up to 500 revolutions per 1 m (under a rotation speed of 1000 revolutions per meter with a drawing speed of ~2 m per minute). The article discusses some technological aspects and issues of manufacturing the above-described twisted MOFs with complicated structures and geometry as GeO2-doped silica supporting elements for them. We present results of some measurements performed for fabricated samples of chiral silica six-GeO2-doped-core few-mode MOFs with various orders of twisting and both step and graded refractive indexes of “cores”. These tests contain research on MOF geometrical parameters, attenuation, and measurements of the far-field laser beam profile.

Published
2023
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8. Luminescence decay kinetics, nonradiative energy transfer and statistics of chromophore distribution in a medium.

Author

Nikitchenko, V. I., Semenov, A. O., and Khokhlov, G. G.

Subjects
ENERGY transfer, LUMINESCENCE, QUANTUM dots, LINEAR polymers, FLUORESCENCE resonance energy transfer, PHYSICS, STATISTICS
Abstract

Luminescence is a widespread phenomenon; it finds its application in transport. A brief overview of the works carried out at the Department of Physics on the theory of radiationless energy transfer from excited particles-chromophores (energy donors - atoms, ions, molecules, quantum dots) to unexcited (energy acceptors) in various media (in solutions, crystals, fractals and linear polymer chains) is presented. Attention is focused on the impact of the statistics of the mutual arrangement of donors and acceptors in various media on the form of the luminescence decay kinetics I(t) of chromophores (donors). In particular, the influence of short-range (in liquids and glasses) and long-range (in crystals) orders in the arrangement of medium particles, as well as the Coulomb interaction of ions in solutions on I(t), is discussed. [ABSTRACT FROM AUTHOR]

Published
2023
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9. Corrigendum to 'Odd and even partial waves of ηπ− and η′π− in π−p → η(′)π−p at 191 GeV/c' [Phys. Lett. B 740 (2015) 303–311]

Author

C. Adolph, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, A. Austregesilo, B. Badełek, F. Balestra, J. Barth, G. Baum, R. Beck, Y. Bedfer, A. Berlin, J. Bernhard, K. Bicker, E.R. Bielert, J. Bieling, R. Birsa, J. Bisplinghoff, M. Bodlak, M. Boer, P. Bordalo, F. Bradamante, C. Braun, A. Bressan, M. Büchele, E. Burtin, L. Capozza, M. Chiosso, S.U. Chung, A. Cicuttin, M.L. Crespo, Q. Curiel, S. Dalla Torre, S.S. Dasgupta, S. Dasgupta, O.Yu. Denisov, S.V. Donskov, N. Doshita, V. Duic, W. Dünnweber, M. Dziewiecki, A. Efremov, C. Elia, P.D. Eversheim, W. Eyrich, M. Faessler, A. Ferrero, M. Finger, M. Finger, jr., H. Fischer, C. Franco, N. du Fresne von Hohenesche, J.M. Friedrich, V. Frolov, F. Gautheron, O.P. Gavrichtchouk, S. Gerassimov, R. Geyer, I. Gnesi, B. Gobbo, S. Goertz, M. Gorzellik, S. Grabmüller, A. Grasso, B. Grube, T. Grussenmeyer, A. Guskov, F. Haas, D. von Harrach, D. Hahne, R. Hashimoto, F.H. Heinsius, F. Herrmann, F. Hinterberger, Ch. Höppner, N. Horikawa, N. d'Hose, S. Huber, S. Ishimoto, A. Ivanov, Yu. Ivanshin, T. Iwata, R. Jahn, V. Jary, P. Jasinski, P. Jörg, R. Joosten, E. Kabuß, B. Ketzer, G.V. Khaustov, Yu.A. Khokhlov, Yu. Kisselev, F. Klein, K. Klimaszewski, J.H. Koivuniemi, V.N. Kolosov, K. Kondo, K. Königsmann, I. Konorov, V.F. Konstantinov, A.M. Kotzinian, O. Kouznetsov, M. Krämer, Z.V. Kroumchtein, N. Kuchinski, F. Kunne, K. Kurek, R.P. Kurjata, A.A. Lednev, A. Lehmann, M. Levillain, S. Levorato, J. Lichtenstadt, A. Maggiora, A. Magnon, N. Makke, G.K. Mallot, C. Marchand, A. Martin, J. Marzec, J. Matousek, H. Matsuda, T. Matsuda, G. Meshcheryakov, W. Meyer, T. Michigami, Yu.V. Mikhailov, M. Mikhasenko, Y. Miyachi, A. Nagaytsev, T. Nagel, F. Nerling, S. Neubert, D. Neyret, J. Novy, W.-D. Nowak, A.S. Nunes, A.G. Olshevsky, I. Orlov, M. Ostrick, R. Panknin, D. Panzieri, B. Parsamyan, S. Paul, D.V. Peshekhonov, S. Platchkov, J. Pochodzalla, V.A. Polyakov, J. Pretz, M. Quaresma, C. Quintans, S. Ramos, C. Regali, G. Reicherz, E. Rocco, N.S. Rossiyskaya, D.I. Ryabchikov, A. Rychter, V.D. Samoylenko, A. Sandacz, S. Sarkar, I.A. Savin, G. Sbrizzai, P. Schiavon, C. Schill, T. Schlüter, K. Schmidt, H. Schmieden, K. Schönning, S. Schopferer, M. Schott, O.Yu. Shevchenko, L. Silva, L. Sinha, S. Sirtl, M. Slunecka, S. Sosio, F. Sozzi, A. Srnka, L. Steiger, M. Stolarski, M. Sulc, R. Sulej, H. Suzuki, A. Szabelski, T. Szameitat, P. Sznajder, S. Takekawa, J. ter Wolbeek, S. Tessaro, F. Tessarotto, F. Thibaud, S. Uhl, I. Uman, M. Virius, L. Wang, T. Weisrock, M. Wilfert, R. Windmolders, H. Wollny, K. Zaremba, M. Zavertyaev, E. Zemlyanichkina, M. Ziembicki, and A. Zink

Subjects
Physics, QC1-999
Abstract

In Fig. 5 on p. 311 of our Phys. Lett. B 740 (2015) 303 an adjustment by 180∘ is required for the phases with respect to the L=2,M=1 wave, of the following waves: L=1,3,5 with M=1, and L=2 with M=2. After this correction (Fig. 5 (corrected) below), the extracted partial waves describe the angular distribution of the η(′) in the Gottfried-Jackson (GJ) frame, using Eq. (4) with implicit Condon-Shortley phase convention. The other results of our paper are not affected. The right-handed GJ coordinate system was defined by the z-axis pointing in the direction of the beam in the η(′)π− center-of-mass system and the y-axis pointing in the direction of precoilGJ×pbeamGJ.

Published
2020
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10. Correlation relationship between the dissipative and conservative backscattering components in the ring resonator of a laser gyroscope

Author

I. N. Khokhlov, E. A. Petrukhin, and N. I. Khokhlov

Subjects
Physics, Resonator, Optics, business.industry, Dissipative system, Ring laser gyroscope, Statistical and Nonlinear Physics, Electrical and Electronic Engineering, business, Ring (chemistry), Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Abstract

We report the results of measuring the complex coupling coefficients in ring He – Ne lasers with a radiation wavelength of 632.8 nm. It is found that in assembling ring resonators from mirrors of the same quality, there is no correlation between the dissipative and conservative backscattering components. The analysis of the measurement results shows that this behaviour is associated with the speckle structure of the backscattered field in the ring resonator. The presence of backscattering (BS) sources with a random phase on the mirrors’ surface leads to a spread in the values of the BS parameters, which is described by the Rayleigh distribution function. Ways to reduce the spread in the values of dissipative and conservative backscattering components in assembling the ring resonators are discussed.

Published
2021

11. Probing transversity by measuring Λ polarisation in SIDIS

Author

Compass Collaboration, Alexeev, G. D., Balestra, F., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lavickova, K., Levorato, S., Lian, Y.-S., Lichtenstadt, J., Lin, P.-J., Longo, R., Ball, M., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Maltsev, A., Mamon, S. A., Marianski, B., Martin, A., Barth, J., Marzec, J., Matoušek, J., Matsuda, T., Mattson, G., Meshcheryakov, G. V., Metzger, F., Meyer, M., Meyer, W., Mikhailov, Yu V., Mikhasenko, M., Beck, R., Mitrofanov, E., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Negrini, T. S., Neyret, D., Nový, J., Nowak, W.-D., Nukazuka, G., Bedfer, Y., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Pekeler, H., Peng, J.-C., Rudnicki, T., Pešek, M., Berenguer Antequera, J., Peshekhonov, D. V., Pešková, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, Jörg, Quaresma, M., Quintans, C., Reicherz, G., Bernhard, J., Riedl, C., Ryabchikov, D. I., Rychter, A., Rymbekova, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Bodlak, M., Schmieden, H., Selyunin, A., Sharko, K., Sinha, L., Slunecka, M., Smolik, J., Sozzi, F., Srnka, A., Steffen, D., Stolarski, M., Bradamante, F., Subrt, O., Sulc, M., Suzuki, H., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Townsend, A., Bressan, A., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Ventura, B., Vidon, A., Virius, M., Wagner, M., Alexeev, M. G., Burtsev, V. E., Wallner, S., Zaremba, K., Zavada, P., Zavertyaev, M., Zemko, M., Zemlyanichkina, E., Zhao, Y., Ziembicki, M., Chang, W.-C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S.-U., Cicuttin, A., Correia, P. M. M., Crespo, M. L., D'Ago, D., Amoroso, A., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisenko, I., Denisov, O. Yu, Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Andrieux, V., Efremov, A., Elia, C., Eremeev, D., Eversheim, P. D., Faccioli, P., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Anosov, V., Flöthner, K. J., Franco, C., Friedrich, J. M., Frolov, V., Garcia Ordòñez, L. G., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, D., Augsten, K., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., von Harrach, D., Heitz, R., Hoffmann, M., Augustyniak, W., Horikawa, N., d'Hose, N., Hsieh, C.-Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Joosten, R., Azevedo, C. D. R., Kabuß, E., Kang, D.-H., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Badełek, B., Kolosov, V. N., Kondo Horikawa, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Koval, A., Kral, Z., Krinner, F., Kulinich, Y., Alexeev, Gd, Alexeev, Mg, Amoroso, A, Andrieux, V, Anosov, V, Augsten, K, Augustyniak, W, Azevedo, Cdr, Badelek, B, Balestra, F, Ball, M, Barth, J, Beck, R, Bedfer, Y, Antequera, Jb, Bernhard, J, Bodlak, M, Bradamante, F, Bressan, A, Burtsev, Ve, Chang, Wc, Chatterjee, C, Chiosso, M, Chumakov, Ag, Chung, Su, Cicuttin, A, Correia, Pmm, Crespo, Ml, D'Ago, D, Dalla Torre, S, Dasgupta, S, Denisenko, I, Denisov, Oy, Donskov, Sv, Doshita, N, Dreisbach, C, Dunnweber, W, Dusaev, Rr, Efremov, A, Elia, C, Eremeev, D, Eversheim, Pd, Faccioli, P, Faessler, M, Ferrero, A, Finger, M, Fischer, H, Flothner, Kj, Franco, C, Friedrich, Jm, Frolov, V, Ordonez, Lgg, Gautheron, F, Gavrichtchouk, Op, Gerassimov, S, Giarra, J, Giordano, D, Gnesi, I, Gorzellik, M, Grasso, A, Gridin, A, Perdekamp, Mg, Grube, B, Guskov, A, von Harrach, D, Heitz, R, Hoffmann, M, Horikawa, N, D'Hose, N, Hsieh, Cy, Huber, S, Ishimoto, S, Ivanov, A, Iwata, T, Jandek, M, Jary, V, Joosten, R, Kabuss, E, Kang, Dh, Kaspar, F, Kerbizi, A, Ketzer, B, Khaustov, Gv, Khokhlov, Ya, Kisselev, Y, Klein, F, Koivuniemi, Jh, Kolosovs, Vn, Horikawa, Kk, Konorov, I, Konstantinov, Vf, Kotzinian, Am, Kouznetsov, Om, Koval, A, Kral, Z, Krinner, F, Kulinich, Y, Kunne, F, Kurek, K, Kurjata, Rp, Kveton, A, Lavickova, K, Levorato, S, Lian, Y, Lichtenstadt, J, Lin, N, Longo, R, Lyubovitskij, Ve, Maggiora, A, Magnon, A, Makins, N, Makke, N, Mallot, Gk, Maltsev, A, Mamon, Sa, Marianski, B, Martin, A, Marzec, J, Matousek, J, Matsuda, T, Mattson, G, Meshcheryakov, Gv, Metzger, F, Meyer, M, Meyer, W, Mikhailov, Yv, Mikhasenko, M, Mitrofanov, E, Miyachi, Y, Moretti, A, Nagaytsev, A, Naim, C, Negrini, T, Neyret, D, Novy, J, Nowak, Wd, Nukazuka, G, Nunes, A, Olshevsky, Ag, Ostrick, M, Panzieri, D, Parsamyan, B, Paul, S, Pekeler, H, Peng, Jc, Pesek, M, Peshekhonov, Dv, Peskova, M, Pierre, N, Platchkov, S, Pochodzalla, J, Polyakov, Va, Pretz, J, Quaresma, M, Quintans, C, Reicherz, G, Riedl, C, Rudnicki, T, Ryabchikov, Di, Rychter, A, Rymbekova, A, Samoylenko, Vd, Sandacz, A, Sarkar, S, Savin, Ia, Sbrizzai, G, Schiavon, R, Schmieden, H, Selyunin, A, Sharko, K, Sinha, L, Slunecka, M, Smolik, J, Sozzi, F, Srnka, A, Steffen, D, Stolarski, M, Subrt, O, Sulc, M, Suzuki, H, Sznajder, R, Tessaro, S, Tessarotto, F, Thiel, A, Tomsa, J, Tosello, F, Townsend, A, Tskhay, V, Uhl, S, Vasilishin, Bi, Vauth, A, Veit, Bm, Veloso, J, Ventura, B, Vidon, A, Virius, M, Wagner, M, Wallner, S, Zaremba, K, Zavada, R, Zavertyaev, M, Zemko, M, Zemlyanichkina, E, Zhao, Y, Ziembicki, M, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS

Subjects
quark: distribution function, Nuclear and High Energy Physics, QC1-999, polarization: longitudinal, Nuclear Theory, mass spectrum: (anti-p pi+), FOS: Physical sciences, muon: secondary beam, 01 natural sciences, COMPASS, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), mass spectrum: (p pi-), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Quantum chromodynamic, quark: polarization: transverse, ddc:530, 010306 general physics, Nuclear Experiment, hyperon: final state, Antilambda: polarization, deep inelastic scattering: semi-inclusive reaction, 010308 nuclear & particles physics, polarized target: transverse, Physics, High Energy Physics::Phenomenology, Lambda: polarization, nucleon: polarization: transverse, CERN SPS, Lambda polarisation, Transversity, High Energy Physics::Experiment, Quantum chromodynamics, Deep inelastic scattering, muon: polarized beam, spin: asymmetry, Particle Physics - Experiment, experimental results
Abstract

Based on the observation of sizeable target-transverse-spin asymmetries in single-hadron and hadron-pair production in Semi-Inclusive measurements of Deep Inelastic Scattering (SIDIS), the chiral-odd transversity quark distribution functions $h_1^q$ are nowadays well established. Several possible channels to access these functions were originally proposed. One candidate is the measurement of the polarisation of $\Lambda$ hyperons produced in SIDIS off transversely polarised nucleons, where the transverse polarisation of the struck quark might be transferred to the final-state hyperon. In this article, we present the COMPASS results on the transversity-induced polarisation of $\Lambda$ and $\bar{\Lambda}$ hyperons produced in SIDIS off transversely polarised protons. Within the experimental uncertainties, no significant deviation from zero was observed. The results are discussed in the context of different models taking into account previous experimental results on $h_1^u$ and $h_1^d$., Comment: 18 pages, 6 figures

Published
2022

12. Effect of backscattering on nonlinear distortions of the scale factor of a laser gyro with a rectangular bias

Author

E. A. Petrukhin, A. S. Bessonov, S. E. Beketov, N. I. Khokhlov, and I. N. Khokhlov

Subjects
Physics, Nonlinear system, Optics, business.industry, Ring laser gyroscope, Statistical and Nonlinear Physics, Ring laser, Electrical and Electronic Engineering, Scale factor, business, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Abstract

We report the results of measurements of nonlinear scale factor corrections, resulting from the backscattering effect in a laser gyro with a rectangular bias. It is shown that taking conservative and dissipative backscattering components into account allows one to obtain analytical relationships that adequately describe the frequency response of a laser gyroscope over the entire working range of angular velocities. Using these relationships to correct the frequency response of a laser gyroscope makes it possible to reduce the value of nonlinear corrections to 1 – 2 ppm.

Published
2019

13. Toward an Accurate Ab Initio Description of Low-Lying Singlet Excited States of Polyenes

Author

Aleksandr Belov and Daniil Khokhlov

Subjects
Physics, Quality (physics), Valence (chemistry), Density matrix renormalization group, Quantum mechanics, Excited state, Ab initio, Perturbation theory (quantum mechanics), Physical and Theoretical Chemistry, Renormalization group, Adiabatic process, Computer Science Applications
Abstract

The low-lying excited states of carotenoids play a crucial role in many important biophysical processes such as photosynthesis. Most of these excited states are strongly correlated, which makes them both challenging for a qualitative ab initio description and an engaging model system for trying out emerging multireference methods. Among these methods, driven similarity renormalization group (DSRG) and its perturbative version (DSRG-MRPT2) are especially attractive in terms of both accuracy and moderate numerical complexity. In this paper, we applied density matrix renormalization group (DMRG) followed by DSRG-MRPT2 for the calculation of vertical and adiabatic excitation energies into the 2Ag-, 1Bu-, and 1Bu+ electronic states of polyenes containing from 8 to 13 conjugating double bonds acting as a model for natural carotenoids. It was shown that the DSRG flow parameter should be adjusted to ensure both the energy convergence with respect to it and the agreement with the experimental data. With the increased flow parameter, the proposed combination of methods provides a reasonable agreement with the experiment. The deviations of the adiabatic excitation energies are less than 1000 cm-1 for the 2Ag- and less than 3000 cm-1 for the excited states of the Bu symmetry, which in terms of accuracy significantly outperforms the N-electron valence state perturbation theory. At the same time, DSRG-MRPT2 is shown to be robust with respect to variation of quality of the DMRG reference wave function such as the orbital optimization or the number of electronic states in the averaging.

Published
2021

14. Memories of a teacher, colleague and friend Vadim S. Anishchenko (1943–2020)

Author

Vladimir Astakhov, Tatyana E. Vadivasova, V.M. Anikin, Valery V. Tuchin, Galina I. Strelkova, Elena G. Elina, Vladimir N. Belykh, Alexander Neiman, and Artur V. Khokhlov

Subjects
Physics, QC1-999, General Engineering, General Physics and Astronomy, department of radiophysics and nonlinear dynamics, vadim s. anishchenko, saratov state university
Abstract

On November 30, 2020, at the age of 78, Vadim S. Anishchenko suddenly died. He was Head of the Department of Radiophysics and Nonlinear Dynamics, Saratov State University (SSU), Doctor of Physics and Mathematics, Professor, Honored Scientist of the Russian Federation, Laureate of the International Science Prize of the Alexander von Humboldt Foundation, Honorary Worker of Education of the Russian Federation, Honorary Professor of SSU, world-class specialist in the field of nonlinear dynamics, founder of one of the leading scientific schools in radiophysics and nonlinear dynamics. The memories of people who knew Vadim S. Anishchenko closely at different periods of his life are published, as a tribute to the memory of an outstanding personality.

Published
2021

15. NEVOD as a test facility for future neutrino telescopes

Author

Petrukhin A.A. and Khokhlov S.S.

Subjects
Physics, QC1-999
Abstract

The possibility to calibrate the new optical modules mDOM of the IceCube-Upgrade neutrino telescope inside the tank of Cherenkov water detector NEVOD is discussed. Methods to calibrate optical modules are presented. The spatial lattice of the detector NEVOD and deployed outside of the water tank calibration telescope system and coordinate-tracking detector DECOR allow calibrating the response of mDOM with respect to the Cherenkov light from muons, muon bundles and cascades with known trajectories.

Published
2019
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16. Energy spectrum of cascade showers initiated by cosmic ray muons in the Cherenkov water detector

Author

Khokhlov S.S., Bogdanov A.G., Khomyakov V.A., Kindin V.V., Kokoulin R.P., Petrukhin A.A., Shutenko V.V., and Yashin I.I.

Subjects
Physics, QC1-999
Abstract

Results of analysis of experimental data on cascade showers with energies of 0.1 – 10 TeV initiated by muons in the Cherenkov water detector NEVOD are presented. The method of selection and reconstruction of cascade parameters in the volume of the detector is discussed. Experimental distributions of cascade axes in zenith angle and energy spectrum of cascades are obtained. The measured distributions are compared with results of calculations.

Published
2019
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17. Energy loss measurements of inclined muon bundles in the Cherenkov water detector

Author

Kokoulin R.P., Barbashina N.S., Bogdanov A.G., Khokhlov S.S., Khomyakov V.A., Kindin V.V., Kompaniets K.G., Mannocchi G., Petrukhin A.A., Saavedra O., Trinchero G., Shutenko V.V., Yashin I.I., and Yurina E.A.

Subjects
Physics, QC1-999
Abstract

An experiment on the measurements of the energy deposit of inclined cosmic ray muon bundles is being conducted at the experimental complex NEVOD (MEPhI). The complex includes the Cherenkov water calorimeter with a volume of 2000 m3 and the coordinate-tracking detector DECOR with a total area of 70 m2. The DECOR data are used to determine the local muon densities in the bundle events and their arrival directions, while the energy deposits (and hence the average muon energy loss) are evaluated from the Cherenkov calorimeter response. Average energy loss carries information about the mean muon energy in the bundles. The detection of the bundles in a wide range of muon multiplicities and zenith angles gives the opportunity to explore the energy range of primary cosmic ray particles from about 10 to 1000 PeV in the frame of a single experiment with a relatively small compact setup. Experimental results on the dependence of the muon bundle energy deposit on the zenith angle and the local muon density are presented and compared with expectations based on simulations of the EAS muon component with the CORSIKA code.

Published
2019
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19. Quantum non-demolition measurement in the interferometer

Author

Dmitri L. Khokhlov

Subjects
Physics, Photon, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Cavity quantum electrodynamics, Physics::Optics, law.invention, Psychiatry and Mental health, Interferometry, Optics, law, Astronomical interferometer, Demolition, business, Quantum, Beam splitter
Abstract

The schemes of the arrangements based on the Mach-Zehnder interferometer and the interferometer with two polarizing beam splitters are considered. The interferometers in both the schemes are equipped with some devices, creating a Kerr medium, to perform the quantum non-demolition measurement of a single photon. Such a device gives which way information of the photon while preserving the work of the interferometer.

Published
2020

20. NEVOD–DECOR Experiment on the Measurement of the Energy Deposit of Cosmic Ray Muon Bundles

Author

G. Mannocchi, V. V. Shutenko, S. S. Khokhlov, N. S. Barbashina, K. G. Kompaniets, I. I. Yashin, V. V. Kindin, A. G. Bogdanov, E. A. Yurina, R. P. Kokoulin, A. A. Petrukhin, and G. C. Trinchero

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Observation period, Cosmic ray, Atomic and Molecular Physics, and Optics, Nuclear physics, High Energy Physics::Experiment, Energy (signal processing), Characteristic energy, Zenith
Abstract

In comparison with calculations, the excess of multimuon events found in many experiments at ultrahigh energies of extensive air showers (EASs) cannot be explained using modern models of hadron interactions. The existence of muon excess is called the muon puzzle. One of the ways to solve this problem is to study the energy characteristics of the EAS muon component. For this purpose, the energy deposit of cosmic ray muon bundles is measured in the NEVOD–DECOR experiment. Registration of muon bundles in a wide range of zenith angles allows one to explore a wide range of energies of the primary particles of cosmic rays (from 10 to 1000 PeV) within a single experiment. The results of measurements of the energy deposit of muon bundles over a long observation period are presented.

Published
2020

21. New Half-Metallic States in Systems with Spin and Charge Density Waves (Brief Review)

Author

A. L. Rakhmanov, D. A. Khokhlov, A. V. Rozhkov, K. I. Kugel, and A. O. Sboychakov

Subjects
Physics, Physics and Astronomy (miscellaneous), Solid-state physics, Condensed matter physics, Doping, Charge density, Nesting (process), Fermi surface, 01 natural sciences, Inelastic neutron scattering, 010305 fluids & plasmas, Metal, visual_art, 0103 physical sciences, visual_art.visual_art_medium, Condensed Matter::Strongly Correlated Electrons, 010306 general physics, Spin-½
Abstract

Studies of a recently suggested mechanism for the stabilization of half-metallic states in doped systems with the nesting of Fermi surface sheets are briefly reviewed. The characteristic features of such states are described. In addition, a theoretically formulated method to identify such states using inelastic neutron scattering is analyzed.

Published
2020

22. THE EMISSION-LINE DUSTY OBJECT IRAS 07080+0605, A LESS-EVOLVED EXAMPLE OF THE RED RECTANGLE

Author

I. V. Reva, Ch. T. Omarov, I. O. Bilinskyi, A. S. Miroshnichenko, Nadine Manset, I. A. Usenko, O. V. Zakhozhay, K. N. Grankin, S. A. Khokhlov, A. V. Kusakin, D. Korcakova, R. I. Kokumbaeva, S. V. Zharikov, A. K. Kuratova, DGAPA/PAPIIT Project IN102120, Project No BR05236322, Ministry of Education and Science of the Republic of Kazakhstan, Grant No AP08856419, and CPCEL 6541230

Subjects
lcsh:QB1-991, Physics, lcsh:Astronomy, Astrophysics::Solar and Stellar Astrophysics, Stars: emission-line, Be, evolution, circumstellar matter, binaries: general, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Emission spectrum, Rectangle, Object (computer science), Astrophysics::Galaxy Astrophysics
Abstract

The all-sky survey conducted by the InfraRed Astronomical Satellite (IRAS) in the 1980’s discovered many objects with infrared excesses whose nature has not been explored until recently. IRAS07080+0605 is one of those identified in the visual spectral range with an early-type star, which shows the B[e] phenomenon. The object is puzzling, because it exhibits one of the strongest infrared excesses associated with a star of one of the lowest surface temperatures (∼8500 K) among objects with the B[e] phenomenon, an apparent combination of spectral features of dwarfs and supergiants, and the absence of a surrounding optical nebula. Our photometric and spectroscopic study shows that the object’s properties are similar to those of the famous Red Rectangle proto-planetary nebula. In this paper we describe our findings and hypotheses about the nature and evolutionary status of IRAS07080+0605

Published
2020

23. THE HOT DARK MATTER MODEL: FURTHER INVESTIGATION

Author

D. L. Khokhlov

Subjects
Physics, lcsh:Astronomy, Hot dark matter, Dark matter, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, galaxies: dwarf, globular clusters: general, dark matter, lcsh:QB1-991, Astrophysics::Earth and Planetary Astrophysics, galaxies: kinematics and dynamics, Astrophysics::Galaxy Astrophysics
Abstract

In a recent paper, the model of thegalaxy with hot dark matter was considered. Thegalaxy is divided into the inner region with thedominant baryonic matter (the elliptic orbit of the testparticle) and the outer region with the dominant hotdark matter (the parabolic orbit of the test particle).It was assumed that the hot dark matter consists ofhypothetical Planck neutrinos arising in the decayof the protons at the Planck scale. Galaxies formedfrom the baryonic matter, and the hot dark matterappears in the galaxies later. The rotation curvesof the galaxies were studied in the model, includingMilky Way, M33, NGC 2366 and IC 2574. In thepresent paper, the hot dark matter model is furtherinvestigated, with the application to M31, the systemof M31 and the Milky Way, the globular clustersNGC 2419 and MGC1, the dwarf spheroidal galaxySculptor, ultra-massive quiescent galaxies from theCOSMOS and UDS fields. The baryonic matter massof M31 was estimated from the rotation curves, withthe average value 1.6 × 10 11 m ? . The gravitationalinteraction of the Milky Way and M31 is considered.In the hot dark matter model, the dynamical massesof the Milky Way and M31 are twice their baryonicmatter masses that gives the radial velocity of M31toward the Milky Way, 106 km s −1 . The hot darkmatter mass in the globular clusters NGC 2419 andMGC1 is estimated. The value is small comparedto the stellar mass in both the clusters. The hotdark matter mass within the half-light radius ofthe dwarf spheroidal galaxy Sculptor is estimated,0.5 × 10 6 m ? . The sum of the stellar and hot darkmatter mass within the half-light radius is consistentwith the dynamical mass within the half-light radiusof the Sculptor derived from the kinematics of themetal rich stars. The instability of the baryonicmatter due to the influence of the hot dark matterand some perturbations flattens the velocity profileof the metal poor stars which is unsuitable to derivethe dynamical mass. The evolution of ultra-massivequiescent galaxies from the COSMOS and UDS fieldsis considered. The dynamical to stellar mass relationis doubling during the evolution from z = 2 to 0 thatcan be explained by the absence of dark matter atz = 2 and the presence of the hot dark matter atz = 0., e outer region with the dominant hotdark matter (the parabolic orbit of the test particle).It was assumed that the hot dark matter consists ofhypothetical Planck neutrinos arising in the decayof the protons at the Planck scale. Galaxies formedfrom the baryonic matter, and the hot dark matterappears in the galaxies later. The rotation curvesof the galaxies were studied in the model, includingMilky Way, M33, NGC 2366 and IC 2574. In thepresent paper, the hot dark matter model is furtherinvestigated, with the application to M31, the systemof M31 and the Milky Way, the globular clustersNGC 2419 and MGC1, the dwarf spheroidal galaxySculptor, ultra-massive quiescent galaxies from theCOSMOS and UDS fields. The baryonic matter massof M31 was estimated from the rotation curves, withthe average value 1.6 × 10 11 m ? . The gravitationalinteraction of the Milky Way and M31 is considered.In the hot dark matter model, the dynamical massesof the Milky Way and M31 are twice their baryonicmatter masses that gives the radial velocity of M31toward the Milky Way, 106 km s −1 . The hot darkmatter mass in the globular clusters NGC 2419 andMGC1 is estimated. The value is small comparedto the stellar mass in both the clusters. The hotdark matter mass within the half-light radius ofthe dwarf spheroidal galaxy Sculptor is estimated,0.5 × 10 6 m ? . The sum of the stellar and hot darkmatter mass within the half-light radius is consistentwith the dynamical mass within the half-light radiusof the Sculptor derived from the kinematics of themetal rich stars. The instability of the baryonicmatter due to the influence of the hot dark matterand some perturbations flattens the velocity profileof the metal poor stars which is unsuitable to derivethe dynamical mass. The evolution of ultra-massivequiescent galaxies from the COSMOS and UDS fieldsis considered. The dynamical to stellar mass relationis doubling during the evolution from z = 2 to 0 thatcan be explained by the absence of dark matter atz = 2 and the presence of the hot dark matter atz = 0.

Published
2020

24. Enhancement of the correlation of the photons of thermal light

Author

D.L. Khokhlov

Subjects
Physics, Photon, Computational Theory and Mathematics, Computer Networks and Communications, Thermal, Telecommunication, Physics::Optics, Quantum Physics, TK5101-6720, Electrical and Electronic Engineering, Atomic physics, Theoretical Computer Science, Computer Science Applications
Abstract

The scheme of the arrangement of five 50/50 non‐polarizing beam splitters is considered. It may provide for the enhancement of the correlation of the photons of thermal light up to 75%. The correlation of the photons after the arrangement can be measured using ghost imaging, Bell test, Hong‐Ou‐Mandel interference.

Published
2021

25. K− over K+ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy

Author

S. Gerassimov, N. Horikawa, A. Srnka, A.G. Olshevsky, A. Rychter, F. Tosello, S. Tessaro, D. Hahne, R. Longo, M. Wilfert, V.N. Kolosov, L. Capozza, K. Kondo, F. Krinner, Yu.A. Khokhlov, Y.-S. Lian, C. Quintans, Alexandr Selyunin, Andrea Ferrero, I. Konorov, Y. Bedfer, K. Zaremba, C. Regali, C. Chatterjee, T. Sawada, Norihiro Doshita, V.A. Polyakov, Nour Makke, W. C. Chang, N. d'Hose, F. Kunne, Valery E. Lyubovitskij, C. Franco, R.R. Dusaev, V. Tskhay, Z.V. Kroumchtein, M. Chiosso, G. Sbrizzai, M. Quaresma, J. Barth, J. Smolik, E. Seder, J.F.C.A. Veloso, S.A. Mamon, O. Subrt, A. Amoroso, C.-Y. Hsieh, L. Dhara, B. Badełek, M. Ziembicki, Franco Bradamante, F. Pereira, N. du Fresne von Hohenesche, O.M. Kouznetsov, M. Stolarski, T. Szameitat, M. Grosse Perdekamp, B.M. Veit, A. Grasso, A. Gridin, A. Vidon, B. Marianski, Bakur Parsamyan, W. Augustyniak, S. Ramos, D.V. Peshekhonov, G. Pesaro, S. Platchkov, P. Zavada, Maria Liz Crespo, Miroslav Sulc, A. Kveton, Y. Miyachi, A.A. Lednev, P. Schiavon, M. A. Faessler, G.V. Khaustov, V. Frolov, B. Ketzer, Soumen Paul, R. Birsa, Jen-Chieh Peng, J. Lichtenstadt, P. Sznajder, J. Pochodzalla, V. Jary, Anne-Laure Martin, P. Jörg, S.S. Dasgupta, I. Gnesi, H. Schmieden, D. Steffen, Andrew Ivanov, S. Sarkar, Yu. Kisselev, O.P. Gavrichtchouk, Martin Bodlak, J.M. Friedrich, A. Sandacz, A. Vauth, H. Matsuda, R. Salac, M. Ostrick, S. Levorato, L. Sinha, T. Matsuda, D. Neyret, S. Dasgupta, A. Austregesilo, P. Bordalo, R. Akhunzyanov, Laura Silva, V.F. Konstantinov, Yakov Petrovich Kulinich, E.R. Bielert, D.I. Ryabchikov, A. Thiel, Q. Curiel, V.E. Burtsev, N. Mitrofanov, S. Huber, S. Wallner, E.A. Levchenko, S. Ishimoto, D. von Harrach, H. Fischer, E. M. Kabuß, E. Zemlyanichkina, Naomi C R Makins, G. D. Alexeev, R.P. Kurjata, Jan Tomsa, M. V. Zavertyaev, W. Dünnweber, K. Bicker, I.A. Savin, C. Marchand, M. Büchele, M.G. Alexeev, M. Krämer, S. Uhl, M. Finger, G. Hamar, J. Giarra, A.V. Efremov, Ilya Kuznetsov, J.H. Koivuniemi, Michal Dziewiecki, Andres Cicuttin, A. Moretti, I. Orlov, V.D. Samoylenko, Jan Matousek, G. Reicherz, Nikolay Anfimov, M. Pešková, M. Gorzellik, R. Heitz, M. Virius, J. Nový, R. Joosten, O.Yu. Denisov, Z. Kral, S. Dalla Torre, A. Antoshkin, P.D. Eversheim, F. Klein, Kamil Augsten, S.-U. Chung, G.V. Meshcheryakov, H. Suzuki, C.D.R. Azevedo, Yu. V. Mikhailov, R. Beck, A. Kerbizi, S. Sirtl, A. Maggiora, F. Tessarotto, Mikhail Mikhasenko, F. Nerling, François Herrmann, B. Grube, Johannes Bernhard, Ch. Dreisbach, S. V. Donskov, A. Guskov, M. Pešek, A.S. Nunes, Andrea Bressan, Markus Ball, D. Panzieri, Janusz Marzec, M. Tasevsky, E. Mitrofanov, G. Nukazuka, M. Slunecka, A. Magnon, Takahiro Iwata, Federica Sozzi, W. Meyer, K. Kurek, Gerhard K. Mallot, Aram Kotzinian, R. Windmolders, B.I. Vasilishin, M. Meyer, A.G. Chumakov, J. Pretz, Arseniy Rybnikov, W.-D. Nowak, V. Anosov, V. Andrieux, Adam Szabelski, A. Nagaytsev, F. Balestra, N. Pierre, F. Gautheron, C. Riedl, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V. E., Capozza, L., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Krämer, M., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marchand, C., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesaro, G., Pešek, M., Pešková, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmieden, H., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sozzi, F., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Vidon, A., Virius, M., Wallner, S., Wilfert, M., Windmolders, R., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., and Ziembicki, M.

Subjects
Hadron, 0 [higher-order], target: isoscalar, 01 natural sciences, COMPASS, deep inelastic scattering [muon+ nucleon], High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), K: multiplicity, High Energy Physics - Phenomenology (hep-ph), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], isoscalar [target], Invariant mass, Nuclear Experiment, Boson, Physics, Quantum chromodynamics, quark: fragmentation function, higher-order: 0, photon, perturbation theory: higher-order, hep-ph, мюоны, lcsh:QC1-999, Bjorken [scaling], High Energy Physics - Phenomenology, beam [muon], рассеяние, factorization [cross section], multiplicity [pi], Particle Physics - Experiment, perturbation theory [quantum chromodynamics], Particle physics, Nuclear and High Energy Physics, Meson, FOS: Physical sciences, ratio [multiplicity], fragmentation function [quark], x-dependence, scaling: Bjorken, charged particle: multiplicity, phase space, multiplicity [charged particle], [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], виртуальные фотоны, 0103 physical sciences, ddc:530, universality, quantum chromodynamics: perturbation theory, 010306 general physics, Particle Physics - Phenomenology, muon+ nucleon: deep inelastic scattering, Muon, multiplicity: ratio, pi: multiplicity, 010308 nuclear & particles physics, hep-ex, muon: beam, Multiplicity (mathematics), cross section: factorization, CERN SPS, Deep inelastic scattering, higher-order [perturbation theory], [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], каоны, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, multiplicity [K], hadronization, lcsh:Physics, experimental results
Abstract

The K$^{-}$ over K$^{+}$ multiplicity ratio is measured in deep-inelastic scattering, for the first time for kaons carrying a large fraction $z$ of the virtual-photon energy. The data were obtained by the COMPASS collaboration using a 160 GeV muon beam and an isoscalar $^6$LiD target. The regime of deep-inelastic scattering is ensured by requiring $Q^2>1$ (GeV/$c)^2$ for the photon virtuality and $W>5$ GeV/$c^2$ for the invariant mass of the produced hadronic system. Kaons are identified in the momentum range from 12 GeV/$c$ to 40 GeV/$c$, thereby restricting the range in Bjorken-$x$ to $0.010.75$. For very large values of $z$, $i.e.$ $z>0.8$, we observe the kaon multiplicity ratio to fall below the lower limits expected from calculations based on leading and next-to-leading order perturbative quantum chromodynamics. Also, the kaon multiplicity ratio shows a strong dependence on the missing mass of the single-kaon production process. This suggests that within the perturbative quantum chromodynamics formalism an additional correction may be required, which takes into account the phase space available for hadronisation., Comment: 16 pages, 7 figures

Published
2018

26. Structure of accretion flows in the nova-like cataclysmic variable RW Tri

Author

S. V. Zharikov, M. S. Hernandez, G. H. Tovmassian, S. A. Khokhlov, G. Subebekova, Hana Kučáková, Marek Wolf, and Vitaly Neustroev

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Structure (category theory), FOS: Physical sciences, Binary number, Cataclysmic variable star, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, spectroscopic [binaries], 01 natural sciences, individual: RW Tri [stars], 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Emission spectrum, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, novae, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, cataclysmic variables, Accretion (meteorology), 010308 nuclear & particles physics, Astronomy and Astrophysics, Nova (laser), Collision, Light curve, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We obtained photometric observations of the nova-like cataclysmic variable RW Tri and gathered all available AAVSO and other data from the literature. We determined the system parameters and found their uncertainties using the code developed by us to model the light curves of binary systems. New time-resolved optical spectroscopic observations of RW Tri were also obtained to study the properties of emission features produced by the system. The usual interpretation of the single-peaked emission lines in nova-like systems is related to the bi-conical wind from the accretion disc's inner part. However, we found that the Halpha emission profile is comprised of two components with different widths. We argue that the narrow component originates from the irradiated surface of the secondary, while the broader component's source is an extended, low-velocity region in the outskirts of the accretion disc, located opposite to the collision point of the accretion stream and the disc. It appears to be a common feature for long-period nova-like systems -- a point we discuss., Comment: 14 pages, 8 figures, Accepted to MNRAS

Published
2020

27. Phasing of seven-channel fibre laser radiation with dynamic turbulent phase distortions using a stochastic parallel gradient algorithm at a bandwidth of 450 kHz

Author

A. V. Kopalkin, R. S. Lebedev, V. S. Tsykin, S. V. Khokhlov, F. A. Starikov, S. V. Tyutin, Sergey G Garanin, O. L. Techko, T. I. Kozlova, M.V. Volkov, and M. I. Konoval'tsov

Subjects
Physics, business.industry, Turbulence, Bandwidth (signal processing), Statistical and Nonlinear Physics, Radiation, Phaser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Optics, Fiber laser, Atmospheric turbulence, Electrical and Electronic Engineering, business
Abstract

We have demonstrated an experimental setup for the coherent phasing of a seven-channel fibre laser system ( λ = 1064 nm) in a scheme comprising a master oscillator and a set of parallel amplifiers with lithium niobate-based fibre-optic phase modulators. Using a stochastic parallel gradient algorithm, an instrumental phase modulator control unit ensures a bandwidth of the system up to 450 kHz. The effectiveness of phasing of light transmitted through a turbulent medium with a characteristic time scale τ turb has been studied experimentally as a function of phasing time τ ph. The results demonstrate that the average Strehl ratio begins to rise at τ turb/τ ph ⩾ 2 and that the effectiveness of compensation for dynamic phase distortions in the beam propagation path rises sharply at τ turb/τ ph ≈ 20. For τ turb/τ ph ⩾ 30 – 40, the average Strehl ratio remains constant at the level reached.

Published
2020

28. NEW APPROACHES IN OPTIMIZATION OF CALCULATION OF WAVE FIELDS DIRECTLY RELATED TO THE SELECTED TARGET AREA OF SEISMIC RESPONSE

Author

N. I. Khokhlov, D.B. Finikov, A. M. Ivanov, and A. V. Shalashnikov

Subjects
Physics, 010504 meteorology & atmospheric sciences, Basis (linear algebra), Field (physics), Operator (physics), Mathematical analysis, Reflected waves, General Medicine, 010502 geochemistry & geophysics, 01 natural sciences, 0105 earth and related environmental sciences
Abstract

The article describes the method of calculating the wave field of reflected waves of a certain type of re-reflection from localized target objects. A special feature of the method is the combination of the wave field continuation operator calculated by means of layer-by-layer recalculation based on the Kirchhoff integral and the finite-difference operator of reflected waves. Parameterization of the wave field continuation operator type is determined on the basis of the frame effective depth-velocity model. The research is carried out by Seismotech, Ltd under the grant support of "Skolkovo" Foundation.

Published
2020

29. Общие свойства показателя скоростной чувствительности диаграмм деформирования, порождаемых линейной теорией вязкоупругости и существование максимума у его зависимости от скорости

Author

A. V. Khokhlov

Subjects
010302 applied physics, Physics, Strain (chemistry), Applied Mathematics, Constitutive equation, Mathematical analysis, 02 engineering and technology, Strain rate, Strain hardening exponent, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Viscoelasticity, Condensed Matter::Materials Science, Mechanics of Materials, Modeling and Simulation, 0103 physical sciences, Tangent modulus, Standard linear solid model, Deformation (engineering), 0210 nano-technology, Mathematical Physics, Software, Analysis
Abstract

Strain rate sensitivity of stress-strain curves family generated by the Boltzmann–Volterra linear viscoelasticity constitutive equation (with an arbitrary relaxation modulus) under uni-axial loadings at constant strain rates is studied analytically as the function of strain and strain rate. The general expression for strain rate sensitivity index is derived and analyzed assuming relaxation modulus being arbitrary. Dependence of the strain rate sensitivity index on strain and strain rate and on relaxation modulus qualitative characteristics is examined, conditions for its monotonicity and for existence of extrema, the lower and the upper bounds and the limit values of the strain rate sensitivity as strain rate tends to zero or to infinity are studied. It is found out that (within the framework of the linear viscoelasticity) the strain rate sensitivity index which is, generally speaking, the function of two independent variables (namely strain and strain rate), depends on the single argument only that is the ratio of strain to strain rate. So defined function of one real variable is termed the strain rate sensitivity function and it may be regarded as a material function. The explicit integral expression (and the two-sided bound) for relaxation modulus in terms of strain rate sensitivity function is derived which enables one to restore relaxation modulus assuming a strain rate sensitivity function is given. The strain rate sensitivity function is represented as a linear function of ratio of tangent modulus to secant modulus of a stress-strain curve at any fixed constant strain rate and can be evaluated in such a way using experimental data. It is proved that the strain rate sensitivity value is confined in the interval from zero to unity (the upper bound of strain rate sensitivity index for pseudoplastic media) whatever strain and strain rate magnitudes. It is found out that the linear theory can reproduce increasing or decreasing or non-monotone dependences of strain rate sensitivity on strain rate (for any fixed strain) and it can provide existence of local maximum or minimum or several extrema as well without any complex restrictions on the relaxation modulus. General properties and peculiarities of the theoretic strain rate sensitivity function are illustrated by the examination of the classical regular and singular rheological models (consisting of two, three or four spring and dashpot elements) and fractional models. Namely, the Maxwell, Kelvin–Voigt, standard linear solid, Zener, anti-Zener, Burgers, anti-Burgers, Scott–Blair, fractional Kelvin–Voigt models and their parallel connections are considered. The carried out analysis let us to conclude that the linear viscoelasticity theory (supplied with common relaxation function which are non-exotic from any point of view) is able to produce high values of strain rate sensitivity index close to unity (the upper bound of strain rate sensitivity index for pseudoplastic media) and to provide existence of the strain rate sensitivity index maximum with respect to strain rate. Thus, it is able to simulate qualitatively existence of a flexure point on log-log graph of stress dependence on strain rate and its sigmoid shape which is one of the most distinctive features of superplastic deformation regime observed in numerous materials tests.

Published
2020

31. The Choice of Optical Flame Detectors for Automatic Explosion Containment Systems Based on the Results of Explosion Radiation Analysis of Methane- and Dust-Air Mixtures

Author

Sergey Khokhlov, Zaur Abiev, and Viacheslav Makkoev

Subjects
Fluid Flow and Transfer Processes, Technology, QH301-705.5, methane, Physics, QC1-999, Process Chemistry and Technology, General Engineering, explosion suppression, spectral characteristics, Engineering (General). Civil engineering (General), Computer Science Applications, Chemistry, coal dust, General Materials Science, explosion, explosion pressure, TA1-2040, Biology (General), radiation intensity, free radicals, QD1-999, Instrumentation
Abstract

A review of the existing optoelectron monitoring devices revealed that the design of optoelectron detectors of the mine atmosphere does not sufficiently take into account the factor of external optical interference. This includes any extraneous source of thermal emission: a source of artificial lighting or enterprises. As a consequence, the optoelectron detectors -based safety systems currently installed at mining sites are not able to ensure properly the detection of the ignition source in the presence of optical interference. Thus, it is necessary to determine the working spectral wavelength ranges from methane and coal dust explosions. The article presents the results of experimental research devoted to the methane-air mixture and coal dust explosion spectral analysis by means of the photoelectric method. The ignition of a methane-air mixture of stoichiometric concentration (9.5%) and coal dust of size characterized by the dispersion of 63–94 microns and concentration of 200 g/m3 was carried out in a 20 L spherical chamber with an initial temperature in the setup of 18–22 °C at atmospheric pressure. Then, photometry of the explosion light flux was conducted on a photoelectric unit. Operating spectral wavelength ranges from methane and coal dust explosions were determined. For the methane-air mixture, it is advisable to use the spectral regions at the maximum emission of 390 and 900 nm. The spectrum section at the maximum emission of 620 nm was sufficient for dust-air mixture. It enabled us to select the wavelength ranges for automatic explosion suppression systems’ launching references. This will exclude false triggering of the explosion suppression system from other radiation sources. The research results will help to improve the decision-making credibility of the device in its direct design. The results will be used in further research to design noise-resistant optical flame detection sensors with a high response rate.

Published
2022
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32. Study of EAS Registered by the PRISMA-32 Array and the Cherenkov Water Calorimeter NEVOD

Author

D. M. Gromushkin, S. S. Khokhlov, A. V. Bulan, Z. T. Izhbulyakova, Yu. V. Stenkin, F. A. Bogdanov, L. Bouchama, and K. O. Yurin

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Calorimeter (particle physics), 010308 nuclear & particles physics, 0103 physical sciences, Continuous mode, 010306 general physics, 01 natural sciences, Atomic and Molecular Physics, and Optics, Cherenkov radiation
Abstract

Two installations that allow to detect the EAS hadron component in a continuous mode, the Cherenkov water calorimeter (CWC) NEVOD and PRISMA-32 are operated in MEPhI. The comparison of the characteristics of EAS simultaneously registered by CWC NEVOD and PRISMA-32 are presented. Groups of events with different positions of the shower axis are considered.

Published
2019

33. Investigation of the Energy Loss of Muon Bundles in the Cherenkov Water Calorimeter

Author

I. I. Yashin, R. P. Kokoulin, V. V. Shutenko, G.C. Trinchero, G. Mannocchi, K. G. Kompaniets, S. S. Khokhlov, V. V. Kindin, N. S. Barbashina, A. A. Petrukhin, A. G. Bogdanov, and E. A. Yurina

Subjects
Physics, Nuclear and High Energy Physics, Energy loss, Range (particle radiation), Muon, Calorimeter (particle physics), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, 01 natural sciences, Atomic and Molecular Physics, and Optics, Nuclear physics, Long period, Bundle, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Cherenkov radiation
Abstract

Investigations of the energy loss of muon bundles are being conducted at the Experimental complex NEVOD. Such investigations are directed to detailed study of “muon puzzle” (the excess of multi-muon events observed in several cosmic ray experiments at ultra-high energies). Results of measurements of the muon bundle energy deposit during a long period of observations in primary cosmic ray energy range 10–1000 PeV have been obtained and have been compared with simulations performed on the basis of the CORSIKA code.

Published
2019

34. Reconstruction of Characteristics of Extensive Air Showers Detected with the NEVOD-EAS Array

Author

A. Chiavassa, O. I. Likiy, I. A. Shulzhenko, A. G. Bogdanov, S. S. Khokhlov, M. B. Amelchakov, and R. P. Kokoulin

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, 010306 general physics, 01 natural sciences, Experimental data analysis, Atomic and Molecular Physics, and Optics, Remote sensing, Continuous data
Abstract

In 2018, the creation of the central part of the NEVOD-EAS cluster-type array aimed at detection of the electron-photon component of extensive air showers in the energy range from 1015 to 1017 eV was completed. At present, a continuous data taking is being performed at the array. The results of the reconstruction of registered extensive air showers using the methods developed within the framework of the cluster approach to experimental data analysis are presented.

Published
2019

35. Expected Spectra of Muon-Induced Cascades in IceCube

Author

A. A. Petrukhin, R. P. Kokoulin, A. G. Bogdanov, E. S. Sozinov, E. A. Yurina, and S. S. Khokhlov

Subjects
Physics, Nuclear and High Energy Physics, High energy, Muon, 010308 nuclear & particles physics, Spectral density, 01 natural sciences, Atomic and Molecular Physics, and Optics, Spectral line, Nuclear physics, Neutrino detector, Cascade, 0103 physical sciences, Energy spectrum, High Energy Physics::Experiment, 010306 general physics, Zenith
Abstract

The neutrino telescope IceCube is capable to reconstruct the energy spectrum of muons in very high energy region by means of measurements of muon-induced cascades. To compare with experimental data, the expected spectra of cascades were theoretically estimated. Calculations were performed for two variants of muon spectrum on the ice surface: a simple power-law energy spectrum with a differential slope index −3.7, and a composite spectrum combined of two power spectra with differential indexes −3.7 and −2.7. The differential spectra of cascades for different zenith angles and integral cascade spectra calculated for two variants of muon spectra are discussed.

Published
2019

36. Digitalization in Open-Pit Mining: A New Approach in Monitoring and Control of Rock Fragmentation

Author

Ilia Frenkel, Sergei V. Khokhlov, and N. Koteleva

Subjects
Technology, Explosive material, QH301-705.5, Computer science, QC1-999, Open-pit mining, digitalization, Market fragmentation, form, Mining engineering, Component (UML), fragmentation, Mill, General Materials Science, Biology (General), Rock mass classification, QD1-999, Instrumentation, Fluid Flow and Transfer Processes, business.industry, Physics, Process Chemistry and Technology, blasting, General Engineering, rock fragmentation, Engineering (General). Civil engineering (General), Automation, Computer Science Applications, Chemistry, Granularity, TA1-2040, business
Abstract

Mining enterprises are widely introducing digital technologies and automation is one of such tools. Granularity monitoring, namely, the size determination of rock mass pieces is a common operational component of the processes that extract minerals by open-pit mining. The article proposes an approach that, in addition to the lump size distribution, makes it possible to estimate the lump form distribution as well. To investigate the effectiveness of monitoring the form of blasted rock mass lumps, the authors conducted experiments in four stages related to the rock condition. They include geological occurrence, explosive crushing, trommelling, and mill crushing. The relationship between these stages is presented and the change in the lumps fragment form is traced. The present article proposes an informational and analytical model of the processes at mining enterprises, extracting minerals by open-pit mining, as well as an algorithm for determining the lumps form and obtaining their distribution in the rock mass.

Published
2021
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37. Simulation of the Spectrum of High-Energy Muons at Great Depths

Author

A. A. Petrukhin, S. V. Maltseva, A. G. Bogdanov, E. A. Yurina, R. P. Kokoulin, and S. S. Khokhlov

Subjects
010302 applied physics, Physics, Energy loss, High energy, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Spectrum (functional analysis), Hadron, General Physics and Astronomy, 01 natural sciences, Spectral line, Nuclear physics, Cascade, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment
Abstract

An algorithm is described for the operation of a program that simulates processes of the energy loss of high-energy muons. Results from simulating the spectra of muons and cascade showers generated by muons at water depths of 4.5–5.5 km are discussed.

Published
2021

38. Status of the NEVOD–DECOR Experiment on the Study of Muon Bundles Energy Deposit

Author

V. V. Shutenko, G.C. Trinchero, N. S. Barbashina, A. G. Bogdanov, E. A. Yurina, K. G. Kompaniets, V. V. Kindin, G. Mannocchi, S. S. Khokhlov, R. P. Kokoulin, A. A. Petrukhin, and I. I. Yashin

Subjects
Physics, Nuclear physics, Muon, Astrophysics::High Energy Astrophysical Phenomena, Component (UML), Bundle, Hadron, General Physics and Astronomy, High Energy Physics::Experiment, Software package, Characteristic energy, Energy (signal processing)
Abstract

The existence of an excessive number of multimuon events observed in many experiments at ultrahigh EAS energies (above 1017 eV) relative to calculations cannot be explained using modern models of hadronic interactions. One way of solving the problem of muon excess is to study the energy characteristics of the EAS muon component. Results are presented from measurements of muon bundle energy characteristics over 7 years of observations. The experimental dependences are compared to results from simulation done with the CORSIKA software package.

Published
2021

39. Studying the Characteristics of Optical Modules in the Volume of the NEVOD Cherenkov Water Detector

Author

A. A. Petrukhin, V. V. Kindin, K. G. Kompaniets, S. S. Khokhlov, I. I. Yashin, N. A. Pasyuk, V. V. Shutenko, and E. A. Zadeba

Subjects
010302 applied physics, Physics, Photomultiplier, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, 01 natural sciences, Optical Module, Optics, Volume (thermodynamics), Water detector, 0103 physical sciences, High Energy Physics::Experiment, Neutrino, business, Cherenkov radiation
Abstract

The possibility of measuring the characteristics of the response of optical modules of neutrino telescopes to various classes events registered in the volume of the Cherenkov water detector NEVOD is discussed. Results are presented from measuring the response of a prototype optical module with a Hamamatsu R877 photomultiplier to single muons and high-energy events.

Published
2021

40. Spin Density Matrix Elements in Exclusive $\omega$ Meson Muoproduction $^*$

Author

Johannes Bernhard, Ch. Dreisbach, A. Guskov, W.-D. Nowak, C. Quintans, G. Nukazuka, Marcin Stolarski, D. D'Ago, C. Naim, F. Tosello, Pietro Faccioli, P.D. Eversheim, H. Suzuki, C.D.R. Azevedo, A. Srnka, G.V. Meshcheryakov, Yu. V. Mikhailov, Andrea Ferrero, G. D. Alexeev, Franco Bradamante, M. Faessler, P. Jörg, Arseniy Rybnikov, B. Badelek, Norihiro Doshita, N. d'Hose, B.M. Veit, O.P. Gavrichtchouk, Martin Bodlak, B. Ketzer, S. Gerassimov, N. Horikawa, Jen-Chieh Peng, J. Smolik, S.S. Dasgupta, R. Heitz, L. Sinha, O. Subrt, K. Zaremba, H. Schmieden, E. M. Kabuß, S.A. Mamon, T. Matsuda, A. Townsend, J.M. Friedrich, V.A. Polyakov, Y. Miyachi, A. Gridin, D.I. Ryabchikov, S. Sarkar, A.B. Ivanov, V.E. Burtsev, S. Huber, N. Mitrofanov, S. Tessaro, Yakov Petrovich Kulinich, G. Sbrizzai, Alexandr Selyunin, Yuxiang Zhao, A. Vauth, M. Wagner, Alessandro Bressan, D. von Harrach, F. Krinner, E. Zemlyanichkina, M.G. Alexeev, A. Amoroso, Yu.A. Khokhlov, J. Pochodzalla, S. Uhl, O.Yu. Denisov, J. Giarra, D. Neyret, Andres Cicuttin, A. Moretti, V.D. Samoylenko, C. Regali, I.A. Savin, Nour Makke, A. Sandacz, J. Nový, M. Chiosso, Naomi C R Makins, Yu. Kisselev, T. Iwata, R. Joosten, G. Reicherz, A. Maltsev, W. C. Chang, F. Gautheron, A. Vidon, B. Marianski, J. Barth, J.F.C.A. Veloso, A. Rychter, M. Finger, Bakur Parsamyan, J.H. Koivuniemi, K. Kurek, V.N. Kolosov, C. Chatterjee, M. Gorzellik, M. Ostrick, I. Denisenko, S. Dalla Torre, Gerhard K. Mallot, Y.-S. Lian, R. Beck, A. Kerbizi, A. Magnon, M. Quaresma, M. Slunečka, M. Pešková, M. Meyer, M. V. Zavertyaev, O.M. Kouznetsov, Anne-Laure Martin, C.-Y. Hsieh, V. Frolov, H. Pekeler, M. Virius, A.G. Chumakov, Miroslav Sulc, Antonin Kveton, D.V. Peshekhonov, W. Augustyniak, Aram Kotzinian, S. Platchkov, P. Zavada, M. Ziembicki, C. Franco, F. Tessarotto, Soumen Paul, R.P. Kurjata, B.I. Vasilishin, Jan Tomsa, M. Grosse Perdekamp, P.M.M. Correia, I. Konorov, P. Sznajder, J. Pretz, A. Antoshkin, M. Jandek, V.F. Konstantinov, W. Meyer, Maria Liz Crespo, F. Kaspar, D. Steffen, K. Lavickova, A. Grasso, V. Andrieux, A.V. Efremov, I. Gnesi, S. Wallner, Y. Bedfer, R. Longo, Kamil Augsten, V. Jary, S. Ishimoto, H. Fischer, A. Thiel, Valery E. Lyubovitskij, A.G. Olshevsky, G.V. Khaustov, A. Maggiora, S. Levorato, S. Dasgupta, Frank Klein, Jan Matousek, Mikhail Mikhasenko, S. V. Donskov, M. Pešek, F. Kunne, Markus Ball, R.R. Dusaev, V. Tskhay, A.S. Nunes, D. Panzieri, Janusz Marzec, E. Mitrofanov, T. Szameitat, A. Koval, J. Lichtenstadt, B. Ventura, B. Grube, M. Zemko, S.-U. Chung, François Herrmann, P.-J. Lin, K. Kondo Horikawa, G. Mattson, V. Anosov, Z. Kral, J. Berenguer Antequera, W. Dünnweber, A. Nagaytsev, F. Balestra, N. Pierre, T. Rudnicki, C. Riedl, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Alexeev, G. D., Alexeev, M. G., Amoroso, A., Andrieux, V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Antequera, J. Berenguer, Bernhard, J., Bodlak, M., Bradamante, F., Bressan, A., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Correia, P. M. M., Crespo, M. L., D’Ago, D., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisenko, I., Denisov, O. Yu., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Efremov, A., Eversheim, P. D., Faccioli, P., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Perdekamp, M. Grosse, Grube, B., Guskov, A., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D’Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Jörg, P., Joosten, R., Kabuß, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Horikawa, K. Kondo, Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Koval, A., Kral, Z., Krinner, F., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lavickova, K., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Lin, P. -J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Maltsev, A., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, T., Mattson, G., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Pekeler, H., Peng, J. -C., Pešek, M., Peshekhonov, D. V., Pešková, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Regali, C., Reicherz, G., Riedl, C., Rudnicki, T., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schmieden, H., Selyunin, A., Sinha, L., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szameitat, T., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Townsend, A., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Ventura, B., Vidon, A., Virius, M., Wagner, M., Wallner, S., Zaremba, K., Zavada, P., Zavertyaev, M., Zemko, M., Zemlyanichkina, E., Zhao, Y., and Ziembicki, M.

Subjects
virtual [photon], generalized parton distribution, Physics and Astronomy (miscellaneous), Hadron, parton: distribution function, Virtual particle, Parton, SDME, COMPASS, 01 natural sciences, Omega, High Energy Physics - Experiment, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], spin: density matrix, Nuclear Experiment, Quantum chromodynamics, Physics, density matrix [spin], vector meson, helicity: conservation law, Helicity, kinematics, omega(783): production, Production (computer science), distribution function [parton], Particle Physics - Experiment, exclusive reaction, Particle physics, liquid: target [hydrogen], Meson, polarization: longitudinal, lcsh:Astrophysics, +muon+p+omega%28783%29%22">muon p --> muon p omega(783), transverse momentum, meson, hydrogen: liquid: target, lcsh:QB460-466, 0103 physical sciences, polarization: transverse, ddc:530, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics, Engineering (miscellaneous), DIS, background, muon: beam, 010308 nuclear & particles physics, hep-ex, High Energy Physics::Phenomenology, conservation law [helicity], Automatic Keywords, lcsh:QC770-798, High Energy Physics::Experiment, experimental results, photon: virtual
Abstract

We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive $\omega$ meson muoproduction on the proton at COMPASS using 160 GeV/$c$ polarised $ \mu ^{+}$ and $ \mu ^{-}$ beams impinging on a liquid hydrogen target. The measurement covers the range 5.0 GeV/$c^2$ $< W, Comment: 31 pages, 12 figures, 1 appendix

Published
2020

41. Measurement of the cross section for hard exclusive π0 muoproduction on the proton

Author

C. Quintans, I.A. Savin, I. Konorov, M. Quaresma, A. Vidon, B. Marianski, Bakur Parsamyan, F. Tosello, M. Jandek, Anne-Laure Martin, Andres Cicuttin, A. Moretti, Valery E. Lyubovitskij, Andrea Ferrero, Norihiro Doshita, N. d'Hose, V.D. Samoylenko, W.-D. Nowak, H. Schmieden, J.M. Friedrich, V.F. Konstantinov, S. Huber, E. Zemlyanichkina, A. Gridin, C. Naim, F. Gautheron, M. A. Faessler, L. Dhara, B. Badelek, A. Maggiora, G. Nukazuka, B. Ketzer, Jen-Chieh Peng, B.M. Veit, A. Rychter, S. Wallner, S. Ishimoto, H. Fischer, V.N. Kolosov, S. Dalla Torre, R.P. Kurjata, S. V. Donskov, M. Pešek, A. Magnon, S.S. Dasgupta, S. Ramos, D.V. Peshekhonov, K. Zaremba, V.A. Polyakov, G.V. Meshcheryakov, Yu. V. Mikhailov, Adam Szabelski, A.G. Olshevsky, G. Sbrizzai, A.S. Nunes, S. Gerassimov, D. Panzieri, Janusz Marzec, N. Horikawa, D.I. Ryabchikov, A. Srnka, Z. Kral, G. D. Alexeev, W. Dünnweber, A. Amoroso, R. Longo, C.-Y. Hsieh, S. Platchkov, P. Zavada, G. Hamar, N. du Fresne von Hohenesche, Yu. Kisselev, A. Kveton, M. Stolarski, J. Lichtenstadt, M. Büchele, W. Augustyniak, Maria Liz Crespo, R. Heitz, V. Frolov, Soumen Paul, M. Chiosso, I. Gnesi, J.H. Koivuniemi, K. Juraskova, M. V. Zavertyaev, M. Ostrick, A. Nagaytsev, F. Balestra, V. Jary, M. Pešková, O.Yu. Denisov, T. Szameitat, N. Pierre, Miroslav Sulc, P. Sznajder, S. Tessaro, D. Hahne, M. Wilfert, D. Neyret, Jan Tomsa, W. Meyer, J.F.C.A. Veloso, O.P. Gavrichtchouk, Martin Bodlak, D. Steffen, L. Sinha, R.R. Dusaev, A.V. Efremov, E. Mitrofanov, Mikhail Mikhasenko, V. Tskhay, Alexandr Selyunin, T. Matsuda, F. Tessarotto, Laura Gonzalez Silva, K. Kurek, M. Wagner, Nour Makke, A. Thiel, W. C. Chang, Yakov Petrovich Kulinich, R. Beck, A. Kerbizi, M. Krämer, F. Krinner, M. Grosse Perdekamp, O.M. Kouznetsov, Andrew Ivanov, C. Riedl, S. Sarkar, B. Grube, M.G. Alexeev, Yu.A. Khokhlov, Franco Bradamante, A. Grasso, S. Uhl, P. Bordalo, Alessandro Bressan, D. von Harrach, J. Giarra, Johannes Bernhard, Ch. Dreisbach, A. Guskov, A. Antoshkin, V. Anosov, Frank Klein, C. Regali, Arseniy Rybnikov, Kamil Augsten, Aram Kotzinian, S.A. Mamon, Markus Ball, Y.-S. Lian, M. Meyer, A.G. Chumakov, F. Kunne, K. Kondo Horikawa, B.I. Vasilishin, Z.V. Kroumchtein, F. Kaspar, J. Pretz, J. Pochodzalla, P. Jörg, S. Levorato, V.E. Burtsev, N. Mitrofanov, Naomi C R Makins, M. Finger, V. Andrieux, Y. Bedfer, C. Chatterjee, M. Virius, J. Smolik, O. Subrt, Y. Miyachi, Yuxiang Zhao, A. Sandacz, C. Franco, S. Dasgupta, F. Pereira, Nikolay Anfimov, R. Joosten, J. Barth, Gerhard K. Mallot, E. Fuchey, Jan Matousek, G. Reicherz, M. Ziembicki, M. Slunecka, J. Nový, S.-U. Chung, François Herrmann, P.-J. Lin, G.V. Khaustov, P.D. Eversheim, H. Suzuki, C.D.R. Azevedo, A. Vauth, T. Iwata, M. Gorzellik, E. M. Kabuß, Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Y., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, C., Dunnweber, W., Dusaev, R. R., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Joosten, R., Jorg, P., Juraskova, K., Kabuss, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo Horikawa, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Kramer, M., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Lin, P. -J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Y. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Naim, C., Nagaytsev, A., Neyret, D., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesek, M., Peshekhonov, D. V., Peskova, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schmieden, H., Selyunin, A., Silva, L., Sinha, L., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Vidon, A., Virius, M., Wagner, M., Wallner, S., Wilfert, M., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhao, Y., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS

Subjects
Quantum chromodynamics, Muoproduction, Hard exclusive meson production, Generalised Parton Distributions, COMPASS, Photon, generalized parton distribution, Proton, Parton, measured [cross section], 01 natural sciences, Generalised Parton Distribution, Photon polarization, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, Physics, Range (particle radiation), Large Hadron Collider, lcsh:QC1-999, ddc, angular dependence, beam [muon], polarization [photon], Nuclear and High Energy Physics, exclusive reaction, liquid: target [hydrogen], transverse [polarization], polarization: longitudinal, interference, Context (language use), leptoproduction [pi0], Nuclear physics, pi0: leptoproduction, hydrogen: liquid: target, 0103 physical sciences, polarization: transverse, ddc:530, 010306 general physics, longitudinal [polarization], 010308 nuclear & particles physics, muon: beam, cross section: measured, photon: polarization, High Energy Physics::Experiment, lcsh:Physics, experimental results
Abstract

Physics letters / B B805, 135454 (2020). doi:10.1016/j.physletb.2020.135454, Published by North-Holland Publ., Amsterdam

Published
2020

42. Contribution of exclusive diffractive processes to the measured azimuthal asymmetries in SIDIS

Author

F. Tosello, Andrea Ferrero, Jen-Chieh Peng, Norihiro Doshita, N. d'Hose, W.-D. Nowak, S. Ramos, S.S. Dasgupta, J. Smolik, Valery E. Lyubovitskij, Nikolay Anfimov, R. Joosten, O. Subrt, A. Koval, B. Ventura, J.F.C.A. Veloso, M. Mikhasenko, R.R. Dusaev, V. Tskhay, G.V. Meshcheryakov, B. Grube, H. Pekeler, P.D. Eversheim, H. Suzuki, C.D.R. Azevedo, Anne-Laure Martin, A. Srnka, Yu. V. Mikhailov, F. Tessarotto, K. Kondo Horikawa, G. Mattson, A.B. Ivanov, Alexandr Selyunin, M. Virius, Y. Miyachi, Yuxiang Zhao, Frank Klein, J. Lichtenstadt, M. Quaresma, O.M. Kouznetsov, O.Yu. Denisov, F. Gautheron, C. Chatterjee, K. Zaremba, P.M.M. Correia, V. Andrieux, Y. Bedfer, Markus Ball, Nour Makke, I. Konorov, S. Sarkar, V. Anosov, V.F. Konstantinov, W. C. Chang, M. V. Zavertyaev, V.A. Polyakov, Alessandro Bressan, D. Neyret, A. Sandacz, C. Franco, P. Jörg, G. Sbrizzai, B.M. Veit, S. Wallner, D. von Harrach, F. Kunne, Adam Szabelski, J. Agarwala, Miroslav Sulc, M. Meyer, Z. Kral, S. Levorato, A.G. Chumakov, A. Amoroso, A. Vauth, D.I. Ryabchikov, A. Magnon, C.-Y. Hsieh, V.E. Burtsev, O.P. Gavrichtchouk, S. Ishimoto, Martin Bodlak, L. Sinha, T. Matsuda, W. Augustyniak, H. Fischer, V. Frolov, Soumen Paul, N. Mitrofanov, R. Beck, T. Rudnicki, R.P. Kurjata, A. Kerbizi, Naomi C R Makins, A. Grasso, A. Townsend, M. Büchele, A.G. Olshevsky, K. Lavickova, J. Pretz, R. Longo, D.V. Peshekhonov, A. Nagaytsev, F. Balestra, M. Finger, M. Wilfert, T. Iwata, S. Platchkov, P. Zavada, N. Pierre, Jan Matousek, G. Reicherz, J.H. Koivuniemi, M. Grosse Perdekamp, Maria Liz Crespo, Yakov Petrovich Kulinich, F. Pereira, Y.-S. Lian, M. Gorzellik, S.-U. Chung, A. Antoshkin, P. Sznajder, S. V. Donskov, M. Pešek, V. Jary, A. Gridin, M. Stolarski, J. Nový, M.G. Alexeev, M. A. Faessler, S. Uhl, François Herrmann, P.-J. Lin, J. Giarra, Kamil Augsten, M. Pešková, I. Gnesi, A.S. Nunes, D. Panzieri, Janusz Marzec, J. Berenguer Antequera, Arseniy Rybnikov, M. Ziembicki, D. Steffen, Jan Tomsa, Franco Bradamante, Yu. Kisselev, E. M. Kabuß, A.V. Efremov, C. Riedl, P. Bordalo, Johannes Bernhard, Ch. Dreisbach, A. Guskov, C. Quintans, A. Maggiora, A. Thiel, I.A. Savin, M. Ostrick, G. D. Alexeev, G.V. Khaustov, W. Dünnweber, M. Slunečka, A. Kveton, R. Heitz, Andres Cicuttin, A. Moretti, V.D. Samoylenko, M. Jandek, S.A. Mamon, A. Maltsev, I. Denisenko, S. Dalla Torre, G. Nukazuka, M. Chiosso, J. Pochodzalla, M. Zemko, F. Kaspar, W. Meyer, K. Kurek, A. Vidon, B. Marianski, Bakur Parsamyan, S. Gerassimov, N. Horikawa, S. Tessaro, M. Wagner, F. Krinner, Yu.A. Khokhlov, Aram Kotzinian, B.I. Vasilishin, J. Barth, S. Dasgupta, E. Mitrofanov, Gerhard K. Mallot, D. D'Ago, C. Naim, L. Dhara, B. Badelek, B. Ketzer, H. Schmieden, J.M. Friedrich, S. Huber, E. Zemlyanichkina, A. Rychter, V.N. Kolosov, Agarwala, J., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Berenguer Antequera, J., Bernhard, J., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Correia, P. M. M., Crespo, M. L., D'Ago, D., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisenko, I., Denisov, O. Y., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, C., Dunnweber, W., Dusaev, R. R., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Joosten, R., Jorg, P., Kabuss, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo Horikawa, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Koval, A., Kral, Z., Krinner, F., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lavickova, K., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Lin, P. -J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Maltsev, A., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, T., Mattson, G., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Y. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Neyret, D., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Pekeler, H., Peng, J. -C., Pereira, F., Pesek, M., Peshekhonov, D. V., Peskova, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Reicherz, G., Riedl, C., Rudnicki, T., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schmieden, H., Selyunin, A., Sinha, L., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Townsend, A., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Ventura, B., Vidon, A., Virius, M., Wagner, M., Wallner, S., Wilfert, M., Zaremba, K., Zavada, P., Zavertyaev, M., Zemko, M., Zemlyanichkina, E., Zhao, Y., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS

Subjects
HERMES experiment, virtual [photon], Hadron, leptoproduction [hadron], measurement methods, Nuclear Theory, Virtual particle, HERMES, 01 natural sciences, SIDIS, COMPASS, hadron: leptoproduction, High Energy Physics - Experiment, azimthal asymmetrie, production [diffraction], High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), semi-inclusive reaction [deep inelastic scattering], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], COMPASS experiment, Nuclear Experiment, Physics, deep inelastic scattering: semi-inclusive reaction, nucleon, hep-ph, photon: energy, TMD obsvervable, angular dependence, High Energy Physics - Phenomenology, modulation, hadron: final state, TMD obsvervables, beam [muon], asymmetry [angular distribution], interpretation of experiments, deuteron: target, transverse momentum [quark], Nucleon, diffraction: production, Particle Physics - Experiment, Quark, Nuclear and High Energy Physics, Particle physics, azimthal asymmetries, exclusive reaction, angular distribution: asymmetry, Meson, FOS: Physical sciences, vector meson: production, 0103 physical sciences, kinematics: effect, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, ddc:530, final state [hadron], 010306 general physics, Particle Physics - Phenomenology, Muon, muon: beam, 010308 nuclear & particles physics, production [vector meson], hep-ex, energy [photon], CERN SPS, effect [kinematics], lcsh:QC770-798, quark: transverse momentum, High Energy Physics::Experiment, target [deuteron], photon: virtual
Abstract

Hadron leptoproduction in Semi-Inclusive measurements of Deep-Inelastic Scattering (SIDIS) on unpolarised nucleons allows one to get information on the intrinsic transverse momentum of quarks in a nucleon and on the Boer-Mulders function through the measurement of azimuthal modulations in the cross section. These modulations were recently measured by the HERMES experiment at DESY on proton and deuteron targets, and by the COMPASS experiment using the CERN SPS muon beam and a $^6$LiD target. In both cases, the amplitudes of the $\cos\phi_h$ and $\cos 2\phi_h$ modulations show strong kinematic dependences for both positive and negative hadrons. It has been known since some time that the measured final-state hadrons in those SIDIS experiments receive a contribution from exclusive diffractive production of vector mesons, particularly important at large values of $z$, the fraction of the virtual photon energy carried by the hadron. In previous measurements of azimuthal asymmetries this contribution was not taken into account, because it was not known that it could distort the azimuthal modulations. Presently, a method to evaluate the contribution of the exclusive reactions to the azimuthal asymmetries measured by COMPASS has been developed. The subtraction of this contribution results in a better understanding of the kinematic effects, and the remaining non-zero $\cos 2\phi_h$ modulation gives indication for a non-zero Boer-Mulders effect., Comment: 13 pages, 7 figures

Published
2019

43. New analysis of ηπ tensor resonances measured at the COMPASS experiment

Author

L. Sinha, T. Matsuda, C. Quintans, A. Jackura, E.A. Levchenko, Andrew Ivanov, M.G. Alexeev, D. von Harrach, S. Uhl, J. Giarra, Michal Dziewiecki, Nikolay Anfimov, Franco Bradamante, M. Krämer, Jen-Chieh Peng, N. C. R. Makins, S.S. Dasgupta, W.-D. Nowak, Fabrice Gautheron, E. Fuchey, R. Joosten, P. Jörg, E. M. Kabuß, César Fernández-Ramírez, Jan Matousek, Aram Kotzinian, S.A. Mamon, M. A. Faessler, Adam P. Szczepaniak, M. Aghasyan, J. Pochodzalla, P. Bordalo, F. Kunne, A. Maggiora, A. Vauth, A. Antoshkin, M. Slunecka, Geoffrey C. Fox, R.R. Dusaev, V. Tskhay, W. Augustyniak, S. Ramos, S. Levorato, V.E. Burtsev, B.I. Vasilishin, V. Andrieux, Kamil Augsten, Adam Szabelski, N. I. Zhuravlev, M. Tasevsky, E. Mitrofanov, I.A. Savin, N. Mitrofanov, P. Sznajder, K. Kondo, P. Kremser, K. Schmidt, Andrea Ferrero, G.V. Meshcheryakov, J. Lichtenstadt, Sagari Sarkar, Yu. V. Mikhailov, O.Yu. Denisov, Z. Kral, P. Schiavon, M. Stolarski, D. Steffen, M. Gorzellik, Y. Bedfer, M. Büchele, J. ter Wolbeek, F. Giordano, C. Chatterjee, J. Nový, A. Kveton, S. Sirtl, S.-U. Chung, J.H. Koivuniemi, Jan Tomsa, A. Thiel, Norihiro Doshita, S. Platchkov, M. Grosse Perdekamp, E. Seder, P. Zavada, H. Matsuda, D. Neyret, R. Beck, A. Kerbizi, A. Nagaytsev, F. Balestra, N. Pierre, A. Grasso, A.V. Efremov, François Herrmann, Miroslav Sulc, Laura Silva, F. Tessarotto, M. Ziembicki, Celso Augusto Guimarães Santos, F. Pereira, G. Nukazuka, N. d'Hose, A. Magnon, J. Smolik, W. Meyer, Maria Liz Crespo, V. Jary, K. Zaremba, Yakov Petrovich Kulinich, S. Gerassimov, F. H. Heinsius, Andres Cicuttin, I. Orlov, V.D. Samoylenko, G. Reicherz, M. Pešková, Valery E. Lyubovitskij, S. V. Donskov, M. Pešek, R. Akhunzyanov, Takahiro Iwata, V.A. Polyakov, A.S. Nunes, M. Finger, S. Dalla Torre, N. Horikawa, D. Panzieri, Janusz Marzec, S. Dasgupta, A. Austregesilo, O. Subrt, G. Sbrizzai, G.V. Khaustov, F. Tosello, G. D. Alexeev, C. Riedl, T. Grussenmeyer, C. Regali, W. Dünnweber, I. Konorov, A. Amoroso, K. Bicker, V. Anosov, Yu. Kisselev, Johannes Bernhard, Ch. Dreisbach, A. Guskov, R. Salac, S. Tessaro, D. Hahne, P.D. Eversheim, N. du Fresne von Hohenesche, T. Schlüter, M. Ostrick, Andrea Bressan, T. Szameitat, Y. Miyachi, H. Suzuki, C.D.R. Azevedo, E.R. Bielert, A.G. Olshevsky, A.A. Lednev, R. Birsa, Jannes Nys, F. Krinner, R. Heitz, Yu.A. Khokhlov, M. Levillain, C.-Y. Hsieh, V. Frolov, J. Barth, Soumen Paul, Gerhard K. Mallot, A. Sandacz, T. Weisrock, I. J. Choi, Ilya Kuznetsov, F. Nerling, A. Srnka, K. Königsmann, M. V. Zavertyaev, H. Schmieden, J.M. Friedrich, S. Huber, E. Zemlyanichkina, Alessandro Pilloni, N.S. Rogacheva, Y.-S. Lian, A. Vidon, B. Marianski, Bakur Parsamyan, Z.V. Kroumchtein, L. Dhara, Anne-Laure Martin, G. Hamar, B. Badelek, V.F. Konstantinov, S. Wallner, S. Ishimoto, H. Fischer, B. Ketzer, A. Rychter, Frank Klein, R. Longo, V.N. Kolosov, K. Schönning, C. Franco, V. Pauk, Markus Ball, Yu. Ivanshin, D.I. Ryabchikov, J.F.C.A. Veloso, R.P. Kurjata, O.M. Kouznetsov, M. Virius, Mikhail Mikhasenko, B. Grube, Alexandr Selyunin, Nour Makke, W. C. Chang, M. Quaresma, D.V. Peshekhonov, I. Gnesi, M. Meyer, A.G. Chumakov, J. Pretz, T. Sawada, M. Chiosso, K. Kurek, Vincent Mathieu, Arseniy Rybnikov, M. Wilfert, O.P. Gavrichtchouk, Martin Bodlak, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, JPAC, COMPASS, Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Jackura, A., Fernández-Ramírez, C., Mikhasenko, M., Pilloni, A., Mathieu, V., Nys, J., Pauk, V., Szczepaniak, A. P., Fox, G., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pešek, M., Pešková, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schlüter, T., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., and Ziembicki, M.

Subjects
M012M3, 11.80.Et, COMPASS, 01 natural sciences, High Energy Physics - Experiment, UNITARITY, Subatomär fysik, Pomeron, Compass, excited state, Subatomic Physics, Nuclear and high energy physics, peripheral photoproduction, physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], COMPASS experiment, EXCHANGE, a2(1320), Nuclear Experiment, a2(1700), Quantum chromodynamics, Physics, Unitarity, PP INTERACTIONS, hep-ph, amplitude analysis, MESONS, lcsh:QC1-999, analytic properties, High Energy Physics - Phenomenology, Amplitude, S-matrix, Particle Physics - Experiment, AMPLITUDE ANALYSIS, Nuclear and High Energy Physics, Particle physics, Meson, CONNECTION, PHYSICS, 14.40.Be, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], pomeron, 0103 physical sciences, ddc:530, Tensor, 010306 general physics, M012W3, Particle Physics - Phenomenology, POMERON, hep-ex, 010308 nuclear & particles physics, M162M, 11.55.Bq, 11.55.Fv, meson resonance, M162W, Physics and Astronomy, 450 GEV/C, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, MATRIX, lcsh:Physics
Abstract

We present a new amplitude analysis of the $\eta\pi$ $D$-wave in $\pi^- p\to \eta\pi^- p$ measured by COMPASS. Employing an analytical model based on the principles of the relativistic $S$-matrix, we find two resonances that can be identified with the $a_2(1320)$ and the excited $a_2^\prime(1700)$, and perform a comprehensive analysis of their pole positions. For the mass and width of the $a_2$ we find $M=(1307 \pm 1 \pm 6)$~MeV and $\Gamma=(112 \pm 1 \pm 8)$~MeV, and for the excited state $a_2^\prime$ we obtain $M=(1720 \pm 10 \pm 60)$~MeV and $\Gamma=(280\pm 10 \pm 70)$~MeV, respectively., Comment: 15 pages, 6 figures

Published
2018

45. Muon excess in ultra-high energy inclined EAS according to the NEVOD-DECOR data

Author

V. V. Kindin, K. G. Kompaniets, G. Trinchero, V. V. Shutenko, I. I. Yashin, A. A. Petrukhin, G. Mannocchi, E. A. Yurina, S. S. Khokhlov, N. S. Barbashina, R. P. Kokoulin, A. G. Bogdanov, and E A Zadeba

Subjects
Nuclear physics, Atmosphere, Physics, Range (particle radiation), Muon, Primary (astronomy), Astrophysics::High Energy Astrophysical Phenomena, Hadron, Particle, Cosmic ray, Intensity (heat transfer)
Abstract

Data of the NEVOD-DECOR experiment on investigations of inclined cosmic ray muon bundles for a long time period (May 2012 – March 2021) are presented. Their comparison with the results of calculations based on simulations of EAS muon component allows one to study the behavior of the energy spectrum and mass composition of primary cosmic rays and/or to check the validity of hadron interaction models in a wide energy range from about 10^16 to more than 10^18 eV. The analysis showed that the observed intensity of muon bundles at primary particle energies of about 10^18 eV and higher can be compatible with the expectation only under the assumption of an extremely heavy mass composition of cosmic rays. This conclusion is consistent with data of a number of other experiments investigating the muon component of air showers at ultra-high energies. On the contrary, measurements of the depth of the shower maximum in the atmosphere (Xmax) in the experiments using air fluorescence technique favor a light mass composition of primary cosmic rays at these energies. This contradiction (so-called “muon puzzle”) cannot be resolved without serious changes of the existing hadron interaction models.

Published
2021

46. Energy-independent complex S01NN potential from the Marchenko equation

Author

N. A. Khokhlov and L. I. Studenikina

Subjects
Marchenko equation, Physics, Matrix (mathematics), Scattering theory, Function (mathematics), System of linear equations, Fourier series, Energy (signal processing), Separable space, Mathematical physics
Abstract

We present a new algebraic method for solving the inverse problem of quantum scattering theory based on the Marchenko theory (fixed-$l$ inversion). We applied a triangular wave set for the Marchenko equation kernel expansion in a separable form. The separable form allows a reduction of the Marchenko equation to a system of linear equations. For the zero orbital angular momentum $l$, a linear expression of the kernel expansion coefficients is obtained in terms of the Fourier series coefficients of $q(1\ensuremath{-}S(q))$ function [$S(q)$ is the scattering matrix] depending on the momentum $q$ and determined by the scattering data in the finite range $0\ensuremath{\le}q\ensuremath{\le}\ensuremath{\pi}/h$. It is shown that this Fourier series defines the potential function of the corresponding radial Schr\"odinger equation with $h$-step accuracy. Based on the developed method, a numerical algorithm is obtained for reconstructing complex partial potentials from scattering data on a finite range of $q$. The reconstructed potentials describe with a required accuracy a partial $S$ matrix that is unitary below the threshold of inelasticity and nonunitary (absorptive) above the threshold. The developed procedure is applied to analyze the $^{1}S_{0}NN$ data up to 3 GeV. We show that these data are described by energy-independent complex partial potential.

Published
2021

47. Dependence of the Energy Deposit of Muon Bundles on Local Muon Density and Zenith Angle

Author

A. G. Bogdanov, N. S. Barbashina, E. A. Yurina, V. V. Shutenko, V. A. Khomyakov, G. Mannocchi, K. G. Kompaniets, O. Saavedra, V. V. Kindin, G.C. Trinchero, A. A. Petrukhin, S. S. Khokhlov, I. I. Yashin, and R. P. Kokoulin

Subjects
010302 applied physics, Physics, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, 01 natural sciences, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Characteristic energy, Zenith, Energy (signal processing)
Abstract

Energy characteristics of the muon component of extensive air showers (EASes) are investigated at the NEVOD experimental complex in order to solve the problem of a detected excess of muons in EASes at ultrahigh energies, relative to simulation results. The dependences of the energy deposit of muon bundles on the zenith angle and the local muon density are obtained for primary energies of 10–1000 PeV. The results from comparing the data to simulations performed with the CORSIKA program are presented.

Published
2019

48. Effect of the Initial Stage of Strain on the Properties of Relaxation Curves Generated by the Rabotnov Nonlinear Relation for Viscoelastic Materials

Author

A. V. Khokhlov

Subjects
Physics, Strain (chemistry), Mechanical Engineering, 05 social sciences, Mathematical analysis, Constitutive equation, Zero (complex analysis), 050109 social psychology, 02 engineering and technology, Viscoelasticity, Nonlinear system, 020303 mechanical engineering & transports, 0203 mechanical engineering, Mechanics of Materials, Convergence (routing), Stress relaxation, Relaxation (physics), 0501 psychology and cognitive sciences
Abstract

An equation describing a family of stress relaxation curves with arbitrary strain programs at the initial stage generated by the Rabotnov nonlinear constitutive relation with two arbitrary material functions is derived and studied analytically. The effect of the initial stage duration and shape on the properties of relaxation curves is analyzed. Their deviations from each other and from the relaxation curves under instantaneous load are estimated in terms of material functions and strain programs. The convergence of deviations to zero is proved when the time tends to infinity or when the initial stage duration tends to zero.

Published
2019

50. Analysis of the Hypothesis of a Giant Gaussian Process as a Means for Describing Secular Variations of the Geomagnetic Field Vector

Author

N. K. Sycheva, V. P. Shcherbakov, and A. Khokhlov

Subjects
Physics, 010504 meteorology & atmospheric sciences, 010502 geochemistry & geophysics, 01 natural sciences, Physics::Geophysics, Moment (mathematics), Dipole, symbols.namesake, Earth's magnetic field, Consistency (statistics), Quadrupole, symbols, General Earth and Planetary Sciences, Canonical form, Statistical physics, Representation (mathematics), Gaussian process, 0105 earth and related environmental sciences, General Environmental Science
Abstract

The consistency of the empirical data on the paleointensity and paleoinclinations contained in the BOROKPINT paleointensity world database with the Geocentric Axial Dipole (GAD) hypothesis and the Giant Gaussian Process (GGP) model describing the geomagnetic field variations in the Brunhes epoch is tested. The calculation procedure is based on the representation of the geomagnetic field potential by the sum of the spherical functions of a spatial coordinate with random coefficients, which enables the computer simulation of the data that correspond to the given statistical characteristics of the coefficients. The estimation shows that according to the Kolmogorov–Smirnov and Anderson–Darling tests, the GAD hypothesis in its canonical form should be rejected. The extension of GAD to GGD with nonzero time-average quadrupole and octupole terms brings the paleointensity and paleoinclination data into agreement with the GGP model realizations; however, these models turn out to be mutually exclusive because their parameters are inconsistent with each other. Testing the paleoinclination data against GDP model demonstrates the necessity of introducing a small correction to the purely dipole component of the geomagnetic field. At the same time, the analysis of the paleointensity data shows that these data with a very high probability agree with the GGP models with a high quadrupole contribution making up 1/3 of the dipole coefficient, which is strongly at odds with the parameters of the model corresponding to the paleoinclination data. This inconsistency is most probably caused by the artifacts due to the incorrect determinations of paleointensity; however, this interpretation leaves unsolved the question about the causes of such a strong latitudinal dependence of the intensity of the Virtual Axial Dipole Moment (VADM) what follows from the empirical data.

Published
2019

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