Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Tkachov, F. V."'
We examine the problem of construction of confidence intervals within the basic single-parameter, single-iteration variation of the method of quasi-optimal weights. Two kinds of distortions of such intervals due to insufficiently large samples are ex
Externí odkaz:
http://arxiv.org/abs/2005.12554
The generalized minimal subtraction scheme for ultraviolet renormalization (Kuznetsov and Tkachov, 1988) is fine-tuned with applications in mind. The resulting $\text{MS}^4$ scheme obviates extraneous regularizations and renders momentum integrands i
Externí odkaz:
http://arxiv.org/abs/2005.03291
Autor:
Radionov, A. A., Tkachov, F. V.
Empirical evidence reveals existence of partial D-operators for the generalized IBP (BT) reduction algorithms that are, counterintuitively, much simpler and much easier to find than the complete D-operators from the foundational Bernstein theorem, al
Externí odkaz:
http://arxiv.org/abs/2003.07808
Autor:
Radionov, A. A., Tkachov, F. V.
Publikováno v:
Physics of Particles and Nuclei, 2020, Vol. 51, No. 4, pp. 604-608
We discuss the problem of constructing differential operators for the generalized IBP reduction algorithms at the 2-loop level. A deeply optimized software allows one to efficiently construct such operators for the first non-degenerate 2-loop cases.
Externí odkaz:
http://arxiv.org/abs/1912.04857
Publikováno v:
Physics of Particles and Nuclei, 2020, Vol. 51, No. 4, pp. 567-571
The UV renormalization scheme $\text{MS}^4$ emerged in the formalization of the reasoning which yielded an array of important algorithms in the 80's. $\text{MS}^4$ guarantees finiteness of renormalized integrals by construction, satisfies the Stuecke
Externí odkaz:
http://arxiv.org/abs/1911.10402
Autor:
Abdurashitov, D. N., Belesev, A. I., Berlev, A. I., Chernov, V. G., Geraskin, E. V., Golubev, A. A., Koroteev, G. A., Likhovid, N. A., Lokhov, A. A., Markin, A. I., Nozik, A. A., Pantuev, V. S., Parfenov, V. I., Skasyrskaya, A. K., Titov, N. A., Tkachev, I. I., Tkachov, F. V., Zadorozhny, S. V.
Publikováno v:
JINST 10 (2015) 10, T10005
We propose a new experiment to search for a sterile neutrino in a few keV mass range at the "Troitsk nu-mass" facility. The expected signature corresponds to a kink in the electron energy spectrum in tritium beta-decay. The new goal compared to our p
Externí odkaz:
http://arxiv.org/abs/1504.00544
Autor:
Lokhov, A. V., Tkachov, F. V.
Publikováno v:
Phys.Part.Nucl. 46 (3), 2015, 347-365
We review the methods of constructing confidence intervals that account for a priori information about one-sided constraints on the parameter being estimated. We show that the so-called method of sensitivity limit yields a correct solution of the pro
Externí odkaz:
http://arxiv.org/abs/1403.5429
Publikováno v:
Nucl.Phys. A897 (2013) 218-228
The issue of step-like anomalies in the tritium \beta-decay spectrum as measured in the Troitsk-\nu-mass experiment is addressed in the context of the new analysis in a systematic fashion using efficient statistical tests specifically derived for the
Externí odkaz:
http://arxiv.org/abs/1204.1908
Publikováno v:
NIMA 686 (2012) 162-167
The statistical method of quasi-optimal weights can be used to derive criteria for searches of anomalies. As an example we derive a convenient statistical criterion for step-like anomalies in cumulative spectra such as measured in the Troitsk-nu-mass
Externí odkaz:
http://arxiv.org/abs/1111.4835
Autor:
Aseev, V. N., Belesev, A. I., Berlev, A. I., Geraskin, E. V., Golubev, A. A., Likhovid, N. A., Lobashev, V. M., Nozik, A. A., Pantuev, V. S., Parfenov, V. I., Skasyrskaya, A. K., Tkachov, F. V., Zadorozhny, S. V.
Publikováno v:
Phys. Rev. D 84 (2011) 112003
An electron antineutrino mass has been measured in tritium beta-decay in the "Troitsk nu-mass" experiment. The setup consists of a windowless gaseous tritium source and an electrostatic electron spectrometer. The whole data set acquired from 1994 to
Externí odkaz:
http://arxiv.org/abs/1108.5034