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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Sanford-Wang parameterisation ： ウィキペディア英語版 Sanford-Wang parameterisation The Sanford-Wang parameterisation is an empirical formula used to model the production of pions in nuclear interaction of the form p+A → $\backslash pi^+$+X where a beam of high-energy protons hit a material. Its formula for the double-differential cross section with respect to momentum (p) and solid angle ($\backslash Omega$) is as follows. $\backslash frac(p,\backslash theta)\; =$ $c\_1\; p^\; \backslash left(1-\backslash frac\}\}-c\_6\backslash theta(p-c\_7"\; TITLE="-c\_3\backslash frac^\}-c\_6\backslash theta(p-c\_7">p\_\; (\backslash cos\backslash theta)^)\backslash right\; )$ Where p and $\backslash theta$ are the momentum of the outgoing pion and its angle from the direction of the incident proton. The numbers $c\_1\backslash ldots\; c\_8$ are the ''Sanford-Wang parameters'' and are typically varied to give a good fit with experimental data. == References == * J. R. Sanford and C. L. Wang, Brookhaven National Laboratory, AGS internal report, 1967 (unpublished); C. L. Wang, Phys. Rev. Letters 25, 1068 (1970); ibid. 25, 1536(E) (1970). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sanford-Wang parameterisation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.