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Search for the rare decay B0→J/ψϕ
Chinese Physics C. 2021. Vol. 45. No. 4. Article 043001.
Aaij R., Beteta C. A., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G.
A search for the rare decay B0 → J/ψφ is performed using pp collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. No significant signal of the decay is observed and an upper limit of 1.1 × 10−7 at 90% confidence level is set on the branching fraction.
Priority areas:
IT and mathematics
Language:
English
Publication based on the results of:
Ducomet B., Zlotnik A., Zlotnik I. A., / Cornell University. Series math "arxiv.org". 2013. No. arxiv: 1303.3471.
We consider an initial-boundary value problem for a generalized 2D time-dependent Schrödinger equation on a semi-infinite strip. For the Crank-Nicolson finite-difference scheme with approximate or discrete transparent boundary conditions (TBCs), the Strang-type splitting with respect to the potential is applied. For the resulting method, the uniform in time L2-stability is proved. Due to the ...
Added: March 16, 2013
Maevsky E., Кислов Р. А., Малова Х. В. et al., Cosmic Research 2018 Vol. 56 No. 6 P. 411-419
Abstract—Within the axisymmetric MHD model of the solar wind, the magnetic field of the Sun has been analyzed in two phases of the solar cycle: the minimum activity, when the dipole magnetic field dominates and the maximum activity, when the quadrupole field predominates. It has been shown that during the period of maximum solar activity, ...
Added: October 5, 2019
Zelenyi L., Malova H., Grigorenko E. et al., 2019 Vol. 61 P. 1-12
In this article we aim to highlight the problems related to the structure and stability of the
comparatively thin current sheets that were relatively recently discovered by space missions in
the magnetospheres of the Earth and planets, as well as in the solar wind. These magnetoplasma
structures are universal in collisionless cosmic plasmas and can play a key ...
Added: March 22, 2019
Isaev E., Tarasov P. A., Odessa Astronomical Publications 2014 Vol. 27 No. 2 P. 72-73
Added: November 24, 2014
Isaev E., Lysakov S., Sukhov R. et al., Odessa Astronomical Publications 2013 No. 26/2 P. 309
Added: December 11, 2013
М. : Национальный исследовательский ядерный университет МИФИ, 2017
Международная молодежная научная школа-конференция «Современные проблемы физики и технологий» в 2017 году посвящена 75-летию Национального исследовательского ядерного университета «МИФИ» и 95-летию академика Н.Г. Басова. Международные молодежные научные школы-конференции «Современ- ные проблемы физики и технологий» проходят на базе НИЯУ МИФИ и ФИАН ежегодно. Целью научной школы является привлечение молодых ученых, аспи- рантов, студентов и школьников к ...
Added: May 8, 2017
Roman Moskalenko, Evgeni Burovski, Shchur L., Journal of Physics: Conference Series 2021 Vol. 1740 Article 012057
We consider a spatially distributed evolutionary game based on the Prisoner’s
Dilemma with agents arranged on a three-dimensional simple cubic lattice. Comparing to twodimensional arrangements, we find that the larger number of neighbors favors the formation of
spatial chaos: the steady state of the game is chaotic unless the payoff parameter is small. ...
Added: January 23, 2021
Пенза : ПГУ, 2015
В сборник трудов включены доклады юбилейного ХХ-го Международного симпозиума «Надежность и качество», проходившего с 25 по 31 мая 2015 г. в городе Пензе.
Рассмотрены актуальные проблемы теории и практики повышения надежности и качества; эффективности внедрения инновационных и информационных технологий в фундаментальных научных и прикладных исследованиях, образовательных и коммуникативных системах и средах, экономике и юриспруденции; методов и ...
Added: May 31, 2015
Пенза : ПГУ, 2016
В сборник трудов включены доклады ХХI-го Международного симпозиума «Надежность и качество», проходившего с 23 по 29 мая 2016 г. в городе Пензе.
Рассмотрены актуальные проблемы теории и практики повышения надежности и качества; эффективности внедрения инновационных и информационных технологий в фундаментальных научных и прикладных исследованиях, образовательных и коммуникативных системах и средах, экономике и юриспруденции; методов и средств ...
Added: May 27, 2016
Timofeev A., Morozov I., Stegailov V. et al., Программные системы: теория и приложения 2014 Т. 5 № 1 С. 191-244
Рассматривается подход, позволяющий выявить, для каких задач нужны суперкомпьютеры эксафлопсного класса. Возможности подхода рассмотрены на примерах актуальных задач материаловедения, физики конденсированного вещества и плотной плазмы, для решения которых необходимо атомистическое моделирование на современных и создаваемых в настоящее время суперкомпьютерах. Для каждой задачи проведено соответствие между набором изучаемых явлений и требуемым уровнем быстродействия (числа ядер) вычислительной ...
Added: August 11, 2014
Barash L., Marshall J., Weigel M. et al., / Cornell University. Series cond-mat "arxiv.org". 2018. No. 1808.04340.
Estimating the density of states of systems with rugged free energy landscapes is a notoriously difficult task of the utmost importance in many areas of physics ranging from spin glasses to biopolymers to quantum computing. Some of the standard approaches suffer from a spurious convergence of the estimates to metastable minima, and these cases are ...
Added: October 17, 2018
Parkhomenko E., Malova H., Grigorenko E. et al., Physics of Plasmas 2019 Vol. 26 No. 4 P. 1-9
This work is devoted to the investigation of particle acceleration during magnetospheric dipolarizations. A numerical model is presented
taking into account the four scenarios of plasma acceleration that can be realized: (A) total dipolarization with characteristic time scales of
3 min; (B) single peak value of the normal magnetic component Bz occurring on the time scale of ...
Added: April 16, 2019
Zhukova E. I., Malova H. V., V. Yu. Popov et al., Cosmic Research 2017 Vol. 55 No. 6 P. 417-425
This work is devoted to studying the processes of the acceleration of plasma particles in thin current sheets that appear during magnetospheric substorms in the Earth’s magnetosphere tail. A numerical model of magnetic dipolarization accompanied by plasma turbulence has been constructed and studied. The model allows one to investigate the particle acceleration due to the ...
Added: July 19, 2018
М. : МИЭМ НИУ ВШЭ, 2013
The materials of The Second International Scientific – Practical Conference is presented below. The Conference reflects the modern state of innovation in education, science, industry and social-economic sphere, from the standpoint of introducing new information technologies.
Digest of Conference materials is presented in 4 parts. It is interesting for a wide range of researchers, teachers, graduate ...
Added: April 18, 2013
Vostrikov A. V., Borisov N., Abrameshin A. E., Качество. Инновации. Образование 2013 № 8 (99) С. 61-65
In work research of numerical stability of earlier reduced scheme of numerical integration of system of the linear ordinary differential equations developed by authors is conducted. The received condition of numerical stability of the reducing scheme proves possibility of use of this scheme in practice. Operability of the reduced scheme was tested on a real ...
Added: September 9, 2013
Молотков С. Н., Арбеков И. М., Журнал экспериментальной и теоретической физики 2017 Т. 152 № 1 С. 62-78
The proof of the security of quantum key distribution is a rather complex problem. Security is
defined in terms different from the requirements imposed on keys in classical cryptography. In quantum
cryptography, the security of keys is expressed in terms of the closeness of the quantum state of an eavesdropper
after key distribution to an ideal quantum state ...
Added: March 2, 2018
Morozov I., Norman G. E., Insepov Z. et al., Physical Review Special Topics - Accelerators and Beams 2012 Vol. 15 P. 053501
This paper describes the surface environment of the dense plasma arcs that damage rf accelerators, tokamaks, and other high gradient structures. We simulate the dense, nonideal plasma sheath near a metallic surface using molecular dynamics (MD) to evaluate sheaths in the non-Debye region for high density, low temperature plasmas. We use direct two-component MD simulations ...
Added: October 28, 2013
М. : National Instruments Russia, 2017
Содержание сборника составляют доклады с результатами оригинальных исследований и технических решений, ранее не публиковавшиеся. Мы надеемся, что предлагаемый сборник окажется полезным для специалистов, работающих в различных областях науки и техники, для широкого круга преподавателей, аспирантов и студентов ВУЗов, а также для преподавателей средних школ и технических колледжей. ...
Added: May 10, 2017
Serkhacheva N., Gainanova, A., Kuz’micheva G. et al., International Journal of Polymer Analysis and Characterization 2015 Vol. 20 No. 8 P. 743-753
This study produced for the first time composites based on polystyrene microspheres with nano-sized titania synthesized by sulfate and sol-gel methods, as well as commercial Hombifine N, Hombikat UV100, and Degussa P25. The starting samples and the composites were characterized by X-ray diffraction, scanning electron microscopy, nitrogen adsorption capacity, and IR spectroscopy. The highest content ...
Added: December 2, 2015
Ratnikov F., Hushchyn M., Курбатов Е. О. et al., Journal of High Energy Physics 2019 Vol. 1904 No. 77 P. 1-16
Heavy Neutral Leptons (HNLs) are hypothetical particles predicted by many extensions of the Standard Model. These particles can, among other things, explain the origin of neutrino masses, generate the observed matter-antimatter asymmetry in the Universe and provide a dark matter candidate.
The SHiP experiment will be able to search for HNLs produced in decays of heavy ...
Added: April 30, 2019
Isaev E.A., Kornilov V.V., Samodurov V.A. et al., Odessa Astronomical Publications 2013 Vol. 26 No. 2 P. 308
Modern astronomical research programs need high-speed data transmission. The problem of the development and modernization of local networks and main channels is discussed. ...
Added: December 11, 2013
Долгопрудный : МФТИ, 2016
Сборник предназначен для широкого круга специалистов, занимаю- щихся проблемами управления и обработки информации, математическо- го и компьютерного моделирования.
Отражены результаты научных исследований, ведущихся в Москов- ском физико-техническом институте (государственном университете) в области вычислительной математики, математической кибернетики, ком- пьютерных и информационных технологий. ...
Added: October 20, 2018
Samodurov V., Kitaeva M. A., Isaev E. et al., Odessa Astronomical Publications 2013 No. 26/2 P. 311-315
Now a day the task of comparative analysis of sample sources from different astronomical catalogs is becoming very topical for astronomers. It is useful both for the same spectral range data and for their cross-analysis for different spectral ranges. It is also important, that the real data from astronomical instruments is placed on-line. For the ...
Added: December 11, 2013
Слуцкий М. Г., Barash L., Тарасевич Ю. Ю., Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 2018 Vol. 98 No. 6 P. 062130-1-062130-8
The behavior of the percolation threshold and the jamming coverage for isotropic random sequential adsorption samples has been studied by means of numerical simulations. A parallel algorithm that is very efficient in terms of its speed and memory usage has been developed and applied to the model involving large linear k-mers on a square lattice ...
Added: December 23, 2018