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http://hdl.handle.net/11701/470
Sat, 20 Apr 2019 21:12:47 GMT2019-04-20T21:12:47ZHERAFitter
http://hdl.handle.net/11701/2033
Название: HERAFitter
Авторы: Alekhin, S; Behnke, O; Belov, P; Borroni, S; Botje, M; Britzger, D; Camarda, S; Cooper-Sarkar, A M; Daum, K; Diaconu, C; Feltesse, J; Gizhko, A; Glazov, A; Guffanti, A; Guzzi, M; Hautmann, F; Jung, A; Jung, H; Kolesnikov, V; Kowalski, H; Kuprash, O; Kusina, A; Levonian, S; Lipka, K; Lobodzinski, B; Lohwasser, K; Luszczak, A; Malaescu, B; McNulty, R; Myronenko, V; Naumann-Emme, S; Nowak, K; Olness, F; Perez, E; Pirumov, H; Plačakytė, R; Rabbertz, K; Radescu, V; Sadykov, R; Salam, G P; Sapronov, A; Schöning, A; Schörner-Sadenius, T; Shushkevich, S; Slominski, W; Spiesberger, H; Starovoitov, P; Sutton, M; Tomaszewska, J; Turkot, O; Vargas, A; Watt, G; Wichmann, K
Краткий осмотр (реферат): HERAFitter is an open-source package that provides a framework for the determination of the parton distribution functions (PDFs) of the proton and for many different kinds of analyses in Quantum Chromodynamics (QCD). It encodes results from a wide range of experimental measurements in lepton–proton deep inelastic scattering and proton–proton (proton–antiproton) collisions at hadron colliders. These are complemented with a variety of theoretical options for calculating PDF-dependent cross section predictions corresponding to the measurements. The framework covers a large number of the existing methods and schemes used for PDF determination. The data and theoretical predictions are brought together through numerous methodological options for carrying out PDF fits and plotting tools to help to visualise the results. While primarily based on the approach of collinear factorisation, HERAFitter also provides facilities for fits of dipole models and transverse-momentum dependent PDFs. The package can be used to study the impact of new precise measurements from hadron colliders. This paper describes the general structure of HERAFitter and its wide choice of options.Wed, 01 Jul 2015 00:00:00 GMThttp://hdl.handle.net/11701/20332015-07-01T00:00:00ZThe method of matrix elements' calculations for the Dirac equation in the Coulomb field
http://hdl.handle.net/11701/1540
Название: The method of matrix elements' calculations for the Dirac equation in the Coulomb field
Авторы: Puchkov, Andrey M.
Краткий осмотр (реферат): The method of matrix elements' calculations for the Dirac equation in the Coulomb field based on the virial relations is suggested. A matrix representation of virial relations for the Dirac equation in the Coulomb field is given. An explicit form of matrices in the cases of direct and inverse recursion is found. Possible applications of the suggested method are discussed and the probability of forbidden M1 transitions is calculated as an example.Mon, 28 Feb 2011 00:00:00 GMThttp://hdl.handle.net/11701/15402011-02-28T00:00:00Z